Differential: Diagnosis — Lexus LS IV (2006-2012)

PROBLEM SYMPTOMS TABLE

HINT

Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Front differential

Symptom	Suspected Area	See
Noise in front differential	Oil (level low or wrong grade)	«DIFFERENTIAL OIL»
	Ring gear or drive pinion (worn or chipped)	«FRONT DIFFERENTIAL CARRIER ASSEMBLY (FOR AWD)»
	Backlash adjustment (defective)	«FRONT DIFFERENTIAL CARRIER ASSEMBLY (FOR AWD)»
	Preload adjustment (defective)	«FRONT DIFFERENTIAL CARRIER ASSEMBLY (FOR AWD)»
	Tooth contact between ring gear and drive pinion (defective)	«FRONT DIFFERENTIAL CARRIER ASSEMBLY (FOR AWD)»
	Bearing (worn)	«FRONT DIFFERENTIAL CARRIER ASSEMBLY (FOR AWD)»
Oil leak from front differential	Oil (level too high or wrong grade)	«DIFFERENTIAL OIL»
	Oil leak from front differential	«FRONT DIFFERENTIAL CARRIER ASSEMBLY (FOR AWD)»
	Seal packing (damaged)	«FRONT DIFFERENTIAL CARRIER ASSEMBLY (FOR AWD)»

PROBLEM SYMPTOMS

Rear differential

Symptom	Suspected Area	See
Noise in rear differential	Oil (level low or wrong grade)	«DIFFERENTIAL OIL»
	Ring gear or drive pinion (worn or chipped)	«REAR DIFFERENTIAL CARRIER ASSEMBLY»
	Backlash adjustment (defective)	«REAR DIFFERENTIAL CARRIER ASSEMBLY»
	Preload adjustment (defective)	«REAR DIFFERENTIAL CARRIER ASSEMBLY»
	Tooth contact between ring gear and drive pinion (defective)	«REAR DIFFERENTIAL CARRIER ASSEMBLY»
	Bearing (worn)	«REAR DIFFERENTIAL CARRIER ASSEMBLY»
Oil leak from rear differential	Oil (level too high or wrong grade)	«DIFFERENTIAL OIL»
	Oil leak from rear differential	«REAR DIFFERENTIAL CARRIER ASSEMBLY»
	Seal packing (damaged)	«REAR DIFFERENTIAL CARRIER ASSEMBLY»

PROBLEM SYMPTOMS

Scheme 1

Scheme 1: ON-VEHICLE INSPECTION

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DRAIN DIFFERENTIAL OIL Stop the vehicle on a level place. for Front Differential: Using a 10 mm hexagon wrench, remove the filler plug and gasket. Using a 10 mm hexagon wrench, remove the drain plug and gasket, and drain the oil. Using a 10 mm hexagon wrench, install a new gasket and the drain plug. Torque: 39 N*m (398 kgf*cm, 29 ft.*lbf) for Rear Differential: Using a 10 mm hexagon wrench, remove the filler plug and gasket. Using a 10 mm hexagon wrench, remove the drain plug and gasket, and drain the oil. Using a 10 mm hexagon wrench, install a new gasket and the drain plug. Torque: 49 N*m (500 kgf*cm, 37 ft.*lbf)
ADD DIFFERENTIAL OIL for Front Differential: Add differential oil so that the oil level is between 0 to 5 mm (0 to 0.197 in.) from the bottom lip of the differential filler plug hole. NOTE: Too much or too little oil will lead to differential problems. After changing the oil, drive the vehicle and then check the oil level again. Oil type: Toyota Genuine Differential Gear Oil LT 75W-85 GL-5 or equivalent. Capacity: 0.7 to 0.8 liters (0.74 to 0.84 US qts., 0.62 to 0.70 lmp. qts.) Using a 10 mm hexagon wrench, install a new gasket and the filler plug. Torque: 39 N*m (398 kgf*cm, 29 ft.*lbf) for Rear Differential: Add differential oil so that the oil level is between 0 to 5 mm (0 to 0.197 in.) from the bottom lip of the differential filler plug hole. NOTE: Too much or too little oil will lead to differential problems. After changing the oil, drive the vehicle and then check the oil level again. Oil type (for 2WD): Toyota Genuine Differential Gear Oil LT 75W-85 GL-5 or equivalent Oil type (for AWD): Toyota Genuine Differential Gear Oil LX 75W-85 GL-5 or equivalent Capacity: 1.3 to 1.4 liters (1.38 to 1.47 US qts., 1.15 to 1.23 lmp. qts.) Using a 10 mm hexagon wrench, install a new gasket and the filler plug. Torque: 49 N*m (500 kgf*cm, 36 ft.*lbf)

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Scheme 7: COMPONENTS

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Scheme 9: REPLACEMENT

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PLACE FRONT WHEELS FACING STRAIGHT AHEAD
DRAIN DIFFERENTIAL OIL (See «ON-VEHICLE INSPECTION» )
REMOVE ENGINE ASSEMBLY Remove the engine assembly (see «REMOVAL» ).
INSTALL ENGINE ON TO ENGINE STAND (See «REMOVAL» )
REMOVE FRONT DIFFERENTIAL CARRIER ASSEMBLY (See «REMOVAL» )
FIX FRONT DIFFERENTIAL CARRIER ASSEMBLY TO OVERHAUL STAND (See «REMOVAL» )
REMOVE FRONT DIFFERENTIAL CARRIER RETAINER SUB-ASSEMBLY (See «DISASSEMBLY» )
REMOVE NO. 1 FRONT DIFFERENTIAL CASE SUB-ASSEMBLY (See «DISASSEMBLY» )
FIX DIFFERENTIAL CARRIER (See «DISASSEMBLY» )
REMOVE FRONT DRIVE PINION COMPANION FLANGE FRONT NUT (See «DISASSEMBLY» )
REMOVE FRONT DRIVE PINION COMPANION FLANGE FRONT SUB-ASSEMBLY WITH DEFLECTOR (See «DISASSEMBLY» )
REMOVE FRONT DIFFERENTIAL CARRIER OIL SEAL Using SST, remove the oil seal from the differential carrier. SST 09308-00010
REMOVE FRONT DIFFERENTIAL DRIVE PINION OIL SLINGER (See «DISASSEMBLY» )
REMOVE DIFFERENTIAL DRIVE PINION WITH BEARING INNER RACE Remove the differential carrier together with the overhaul attachment from the engine stand. Install the differential carrier to the attachment as shown in the illustration. Using a press, remove the drive pinion from the differential carrier. NOTE: Do not drop the drive pinion or bearing inner race.
REPLACE FRONT DIFFERENTIAL DRIVE PINION BEARING SPACER Replace the drive pinion bearing spacer with a new one and install it to the drive pinion.
INSTALL DIFFERENTIAL DRIVE PINION WITH BEARING INNER RACE Using SST and the companion flange, install the drive pinion. SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03040, 09956-03060) HINT: Before using SST center bolt, apply hypoid gear oil to its threads and tip. Using SST, remove the companion flange.
INSTALL FRONT DIFFERENTIAL DRIVE PINION OIL SLINGER (See «REASSEMBLY» )
INSTALL FRONT DIFFERENTIAL CARRIER OIL SEAL Using SST and a hammer, tap in a new oil seal. SST 09309-36010,09502-24010 Standard depth: 6.2 to 7.2 mm (0.0244 to 0.0283 in.) NOTE: Using a vernier caliper, measure the depth of the oil seal. Measure at 3 or more areas around the circumference of the oil seal Make sure the difference between the maximum and minimum measured values is less than 0.75 mm (0.0295 in.), as a greater difference may lead to oil leaks. Tap the oil seal uniformly so that the oil seal is straight. Do not excessively tap the oil seal. HINT: First, uniformly tap in the oil seal until it is flush with the edge of the carrier, then tap it little by little until the depth is within the standard range. Apply MP grease to the lip of the oil seal.
INSTALL FRONT DRIVE PINION COMPANION FLANGE FRONT SUB-ASSEMBLY WITH DEFLECTOR (See «REASSEMBLY» )
INSPECT DRIVE PINION PRELOAD (See «REASSEMBLY» )
INSTALL NO. 1 FRONT DIFFERENTIAL CASE SUB-ASSEMBLY (See «REASSEMBLY» )
INSTALL FRONT DIFFERENTIAL CARRIER RETAINER SUB-ASSEMBLY (See «REASSEMBLY» )
INSPECT TOTAL PRELOAD (See «REASSEMBLY» )
STAKE FRONT DRIVE PINION COMPANION FLANGE FRONT NUT (See «REASSEMBLY» )
REMOVE FRONT DIFFERENTIAL CARRIER ASSEMBLY FROM OVERHAUL STAND (See «REASSEMBLY» )
INSTALL FRONT DIFFERENTIAL CARRIER ASSEMBLY (See «REASSEMBLY» )
INSTALL ENGINE TO VEHICLE Remove the engine from the engine stand and then install it to the vehicle (see «INSTALLATION» ).
ADD DIFFERENTIAL OIL (See «ON-VEHICLE INSPECTION» )

Scheme 16

Scheme 16: COMPONENTS

Scheme 17

Scheme 17: REPLACEMENT

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Scheme 21

PLACE FRONT WHEELS FACING STRAIGHT AHEAD
DRAIN DIFFERENTIAL OIL (See «ON-VEHICLE INSPECTION» )
REMOVE ENGINE ASSEMBLY Remove the engine assembly (see «REMOVAL» ).
INSTALL ENGINE ON ENGINE STAND (See «REMOVAL» )
REMOVE FRONT DIFFERENTIAL CARRIER ASSEMBLY (See «REMOVAL» )
REPLACE FRONT DIFFERENTIAL CASE OIL SEAL Set the differential carrier to an overhaul stand, as shown in the illustration. for LH: Using SST, remove the oil seal LH. SST 09308-00010 Using SST and a hammer, tap in a new oil seal LH to the differential carrier assembly. SST 09608-32010, 09950-70010 (09951-07100) Standard depth: -0.5 to 0.5 mm (-0.0197 to 0.0196 in.) NOTE: Tap the oil seal uniformly so that the oil seal is straight. Do not excessively tap the oil seal. Make sure the difference between the maximum and minimum measured values is less than 0.57 mm (0.0224 in.), as a greater difference may lead to oil leaks. Coat the lip of the oil seal with MP grease. for RH: Using SST, remove the oil seal RH. SST 09308-00010 Using SST and a hammer, tap in a new oil seal RH to the differential carrier assembly. SST 09550-60010 (09951-00570), 09950-70010(09951-07100) Standard depth: 1.0 to 2.0 mm (0.0394 to 0.0787 in.) NOTE: Tap the oil seal uniformly so that the oil seal is straight. Do not excessively tap the oil seal. Make sure the difference between the maximum and minimum measured values is less than 0.47 mm (0.0185 in.), as a greater difference may lead to oil leaks. Coat the lip of the oil seal with MP grease. Remove the differential carrier from the overhaul stand.
INSTALL FRONT DIFFERENTIAL CARRIER ASSEMBLY (See «REASSEMBLY» )
INSTALL ENGINE TO VEHICLE Remove the engine from the engine stand and then install it to the vehicle (see «INSTALLATION» ).
ADD DIFFERENTIAL OIL (See «ON-VEHICLE INSPECTION» )

Scheme 22

Scheme 22: COMPONENTS

Scheme 23

Scheme 23: REMOVAL

REMOVE REAR DRIVE SHAFT ASSEMBLY LH Remove the rear drive shaft assembly LH (See «REMOVAL»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) ).
REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL Using SST, tap out the oil seal. SST 09308-00010

Scheme 24

Scheme 24: INSTALLATION

INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL Using SST and a hammer, tap in a new oil seal. SST 09223-15030, 09950-70010 (09951-07150) Standard depth: -0.5 to 0.5 mm (-0.020 to 0.020 in.) Apply MP grease to the lip of the oil seal.
INSTALL REAR DRIVE SHAFT ASSEMBLY LH Install the rear drive shaft assembly LH (See «INSTALLATION»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) ).

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Scheme 28

Scheme 28: REMOVAL

PLACE FRONT WHEELS FACING STRAIGHT AHEAD
DRAIN DIFFERENTIAL OIL (See «ON-VEHICLE INSPECTION» )
REMOVE ENGINE ASSEMBLY Remove the engine assembly (see «REMOVAL» ).
INSTALL ENGINE ON ENGINE STAND (See «REMOVAL» )
REMOVE FRONT DIFFERENTIAL CARRIER ASSEMBLY Support the rear differential carrier with a jack. CAUTION: As the differential carrier assembly is very heavy, securely support it with the jack. Remove the 4 bolts and differential carrier. NOTE: Do not damage the installation surface when removing the differential carrier. The remaining oil may leak out when removing the differential carrier.

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FIX FRONT DIFFERENTIAL CARRIER ASSEMBLY TO OVERHAUL STAND Set the differential carrier to an overhaul stand as shown in the illustration.
INSPECT DIFFERENTIAL RING GEAR BACKLASH Set a lever probe to a dial indicator. Insert the probe into the drain plug hole and set it onto the edge of one of the teeth of the ring gear at a right angle. Using SST, turn the differential case clockwise and counterclockwise and measure the ring gear backlash while holding the companion flange with your hand. SST 09564-50010 Standard backlash: 0.13 to 0.23 mm (0.00512 to 0.00905 in.) HINT: Measure at 3 or more areas around the circumference of the ring gear. For reassembly purposes, record the result before disassembly. If the backlash is not within the specified range, adjust the ring gear backlash or repair as necessary.
INSPECT RUNOUT OF FRONT DRIVE PINION COMPANION FLANGE FRONT SUB-ASSEMBLY Wipe the inside surface of the companion flange with a cloth or equivalent and remove dirt and foreign matter. Perform the vertical runout inspection. Set a lever probe to a dial indicator and set the probe at a right angle to the inner surface of the companion flange. Measure the vertical runout of the companion flange. Maximum runout: 0.12 mm (0.00472 in.) If the runout is greater than the maximum value, replace the companion flange. HINT: For reassembly purposes, record the result before disassembly. Perform the horizontal runout inspection. Set a dial indicator at a right angle to the surface of the companion flange as shown in the illustration. Measure the lateral runout of the companion flange. Maximum runout: 0.08 mm (0.00314 in.) If the runout is greater than the maximum value, replace the companion flange. HINT: For reassembly purposes, record the result before disassembly.
REMOVE FRONT DIFFERENTIAL BREATHER PLUG Remove the differential breather plug from the differential carrier.
REMOVE FRONT DIFFERENTIAL CASE OIL SEAL Using SST, remove the oil seal LH from the differential carrier. SST 09308-00010 Using SST, remove the oil seal RH from the differential carrier. SST 09308-00010
REMOVE FRONT DIFFERENTIAL CARRIER RETAINER SUB-ASSEMBLY Loosen the 11 bolts. Remove the differential carrier from the overhaul attachment. Remove the 11 bolts. Insert the blade of an oil pan seal cutter between the differential carrier and differential carrier retainer. Cut through the applied seal packing. NOTE: Do not damage the installation surface of the differential carrier. Using a brass bar and hammer, lightly tap the retainer to remove it from the differential carrier.
REMOVE NO. 1 FRONT DIFFERENTIAL CASE SUB-ASSEMBLY Remove the differential case from the differential carrier. NOTE: Do not damage the differential case bearing and ring gear.
INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION Uniformly apply a light coat of Prussian blue on both sides of 4 teeth on the differential ring gear. Install the differential case to the differential carrier. Install the retainer with the 11 bolts. Torque: 58 N*m (591 kgf*cm, 43 ft.*lbf) Rotate the companion flange several times in the forward and backward rotation directions. Remove the 11 bolts and retainer. Remove the differential case from the differential carrier. Inspect the tooth contact pattern. HINT: For reassembly purposes, record the result before disassembly.
FIX DIFFERENTIAL CARRIER Fix the differential carrier to the overhaul stand's.
REMOVE FRONT DIFFERENTIAL BREATHER PLUG OIL DEFLECTOR Remove the 2 bolts and differential breather plug oil deflector.
REMOVE FRONT DRIVE PINION COMPANION FLANGE FRONT NUT Using SST and a hammer, unstake the staked part of the drive pinion companion flange nut. SST 09930-00010 NOTE: Be sure to use SST with the tapered surface facing the shaft. Do not grind the tip of SST with a grinder etc. Completely loosen the staked part of the nut when removing it. Do not damage the threads of the drive pinion. Using SST to hold the flange, remove the drive pinion companion flange nut. SST 09213-58013, 09229-55010, 09330-00021 NOTE: Perform the removal while supporting the overhaul attachment.
REMOVE FRONT DRIVE PINION COMPANION FLANGE FRONT SUB-ASSEMBLY Using SST, remove the companion flange from the differential carrier. SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03030, 09956-03020) HINT: Before using SST center bolt, apply hypoid gear oil to its threads and tip.
REMOVE FRONT DIFFERENTIAL DUST DEFLECTOR Using SST and a press, press out the dust deflector from the companion flange. SST 09950-00020, 09950-60010 (09951-00430), 09950-70010 (09951-07100) NOTE: Perform this procedure while tightening SST nut to secure the contact surfaces of SST and the dust deflector. Do not drop the companion flange.
REMOVE FRONT DIFFERENTIAL CARRIER OIL SEAL Using a SST, remove the oil seal from the differential carrier. SST 09308-00010
REMOVE FRONT DIFFERENTIAL DRIVE PINION OIL SLINGER Remove the drive pinion oil slinger from the differential carrier.
REMOVE FRONT DRIVE PINION REAR TAPERED ROLLER BEARING INNER RACE Remove the differential carrier together with the overhaul attachment from the engine stand. Set the differential carrier to an overhaul stand, etc., as shown in the illustration. Using a press, press out the drive pinion. NOTE: Do not drop the drive pinion. Remove the bearing inner race from the differential carrier. Install the differential carrier to the overhaul attachment as it was installed previously. Install the differential carrier together with overhaul attachment to the engine stand.
REMOVE FRONT DIFFERENTIAL DRIVE PINION BEARING SPACER Remove the bearing spacer from the drive pinion.
REMOVE FRONT DRIVE PINION FRONT TAPERED ROLLER BEARING INNER RACE Using SST and a press, remove the front tapered roller bearing inner race from the drive pinion. SST 09950-00020 NOTE: Do not drop the drive pinion. HINT: Perform this procedure while tightening SST nut to secure the contact surfaces of SST and the front tapered roller bearing inner race. If either the drive pinion or the ring gear is damaged, replace both as a set.
REMOVE FRONT DRIVE PINION REAR TAPERED ROLLER BEARING OUTER RACE Using SST, remove the bearing outer race from the differential carrier. SST 09387-00041 (09387-02020)
REMOVE FRONT DRIVE PINION FRONT TAPERED ROLLER BEARING OUTER RACE Using SST and a hammer, tap out the bearing outer race and adjusting shim from the differential carrier. SST 09950-70010 (09951-07150), 09950-60010 (09951-00610, 09951-00650, 09952-06010) HINT: For reassembly purposes, measure the thickness of the adjusting shim, and record the result.
REMOVE FRONT DIFFERENTIAL CASE BEARING OUTER RACE LH Using SST and a press, press out the bearing outer race and case washer from the differential carrier. SST 09950-60010 (09951-00640, 09952-06010), 09950-60020 (09951-00680), 09950-70010 (09951-07100)
REMOVE FRONT DIFFERENTIAL CASE BEARING OUTER RACE RH Using SST and a press, press out the bearing outer race and case washer from the differential carrier. SST 09950-60010 (09951-00500), 09950-70010 (09951-07100, 09951-00330, 09952-06010)
REMOVE DIFFERENTIAL RING GEAR Hold the differential case in a vise between aluminum plates. NOTE: Do not overtighten the vise. Put matchmarks on the ring gear and differential case. Remove the 10 ring gear set bolts. Remove the differential case from the vise. Using a plastic-faced hammer, tap on the ring gear to separate it from the differential case. HINT: Place a cloth on the tooth side of the ring gear to prevent damage.

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Scheme 60: REASSEMBLY

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INSTALL DIFFERENTIAL RING GEAR Clean the differential ring gear set bolt hole. Heat the ring gear to approximately 100°C (212°F) in boiling water. CAUTION: Use thick gloves to protect your hands as the ring gear is hot. Carefully take the ring gear out of the boiling water. After the moisture on the ring gear has completely evaporated, quickly install the ring gear to the differential case. HINT: Align the matchmarks, differential case bolt holes and ring gear screw holes. Hold the differential case in a vise between aluminum plates. NOTE: Do not overtighten the vise. Apply adhesive to the threads and flanges of 10 new ring gear set bolts. Torque: 97 N*m (989 kgf*cm, 72 ft.*lbf) Adhesive: Toyota Genuine Adhesive 1360K, Three Bond 1360K or equivalent NOTE: Tighten the bolts after the ring gear has sufficiently cooled down. Install the differential case bolts by tightening diametrically opposite pairs uniformly in several passes.
INSTALL FRONT DRIVE PINION REAR TAPERED ROLLER BEARING OUTER RACE Using SST, a bolt, nut, and washer, install the bearing outer race to the differential carrier. SST 09950-60020 (09951-00730, 09951-00810) NOTE: Do not apply hypoid gear oil to a new bearing. HINT: If there are not enough threads, add another SST accordingly.
INSTALL FRONT DRIVE PINION FRONT TAPERED ROLLER BEARING OUTER RACE Install the adjust shim to the differential carrier. HINT: Select a adjusting shim of the same thickness as the one removed. Using SST, a bolt, nut, and washer, install the bearing outer race to the differential carrier. SST 09950-60020 (09951-00730, 09951-00810) NOTE: Do not apply hypoid gear oil to a new bearing.
INSTALL FRONT DRIVE PINION FRONT TAPERED ROLLER BEARING INNER RACE Using SST and a press, press in the front drive pinion front tapered roller bearing inner race to the drive pinion. SST 09309-14020 NOTE: Do not apply hypoid gear oil to a new bearing.
INSTALL FRONT DIFFERENTIAL CASE BEARING OUTER RACE LH Remove the differential carrier from the overhaul attachment. Install the differential case washer to the differential carrier. HINT: If the final gear set (drive pinion and ring gear) or differential case bearing are replaced, select and install the thinnest differential case washer first. If the drive pinion, ring gear or differential case are reused, select and install a differential case washer with the same thickness as the one before the disassembly first. Using SST and a press, press in the case bearing outer race to the differential carrier. SST 09950-60020 (09951-00680, 09951-00790, 09952-06010), 09950-70010 (09951-07100) NOTE: Do not apply hypoid gear oil to a new bearing.
INSTALL FRONT DIFFERENTIAL CASE BEARING OUTER RACE RH Install the differential case washer to the differential carrier retainer. HINT: If the final gear set (drive pinion and ring gear) or differential case bearing are replaced, select and install the thinnest differential case washer first. If the drive pinion, ring gear or differential case are reused, select and install a differential case washer with the same thickness as the one before the disassembly first. Using SST and a press, press in the case bearing outer race to the differential carrier retainer. SST 09950-60020 (09951-00790, 09951-00890, 09952-06010), 09950-70010 (09951-07100) NOTE: Do not apply hypoid gear oil to a new bearing.
INSTALL FRONT DIFFERENTIAL DUST DEFLECTOR Using SST and a press, insert a new dust deflector into the companion flange. SST 09612-30012, 09950-70010 (09951-07100) NOTE: Slowly press in the dust deflector but not excessively. If any burrs remain after pressing in the deflector, remove them.
ADJUST DRIVE PINION PRELOAD Fix the differential carrier with an attachment. Install the drive pinion to the differential carrier, and then install the bearing inner race and oil slinger while supporting the drive pinion by hand. NOTE: Do not apply hypoid gear oil to a new bearing. Do not drop the drive pinion. HINT: Install the spacer and oil seal after performing the ring gear tooth contact pattern inspection adjustment. Using SST, install the companion flange. SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03030, 09956-03020) NOTE: As a bearing spacer is not installed, if SST is tightened excessively, SST, the companion flange, and drive pinion will be damaged. Support the drive pinion by hand until SST is installed. Be careful not to drop the drive pinion. HINT: Before using SST center bolt, apply hypoid gear oil to its threads and tip. Install the companion flange so that there is some free play in the drive pinion. Remove SST. Using SST and a torque wrench, tighten the flange nut little by little until it reaches the specified preload. SST 09213-58013, 09330-00021, 09229-55010 Maximum torque: 490 N*m (4997 kgf*cm, 361 ft.*lbf) NOTE: Tighten the nut with a force of 100 N*m (1020 kgf*cm. 74 in.*lbf) while checking the starting torque of the drive pinion. As the bearing spacer is not installed, tighten the flange nut little by little. Do not overtighten the nut. Do not overtighten the nut, as the threads will become damaged. Coat the threads the flange nut and drive pinion with hypoid gear oil LSD. Perform the installment while supporting the overhaul attachment. Using SST and a torque wrench, measure the preload. SST 09229-55010 Drive Pinion Preload (at starting) TORQUE SPECIFICATION Bearing Standard New 3.9 to 4.6 N*m (40 to 46 kgf*cm, 35 to 41 in.*lbf) Reused 2.8 to 3.1 N*m (28 to 32 kgf*cm, 25 to 27 in.*lbf) NOTE: For a more accurate measurement, rotate the bearing forward and backward before the inspection. HINT: Record the preload for total preload measurement.
INSTALL DIFFERENTIAL CASE Remove the differential carrier from the overhaul attachment. Install the differential case to the differential carrier. NOTE: Do not damage the case bearing and ring gear.
INSPECT AND ADJUST DIFFERENTIAL RING GEAR BACKLASH Install the retainer to the differential carrier with the 11 bolts. Torque: 58 N*m (591 kgf*cm, 43 ft.*lbf) Install the differential carrier to the overhaul attachment. Set a lever probe to a dial indicator. Insert the probe into the drain plug hole and set it onto the edge of one of the teeth of the ring gear at a right angle. Using SST, turn the differential case clockwise and counterclockwise and measure the ring gear backlash while holding the companion flange with your hand. SST 09564-50010 Standard backlash: 0.13 to 0.23 mm (0.00512 to 0.00905 in.) HINT: Measure at 3 or more areas around the circumference of the ring gear. Record the measured value, as it is used to select the differential case washer. If the result is outside of the standard range, replace the washer with one of a different thickness in accordance with the following procedure. Perform the tooth contact pattern inspection for the differential ring gear and drive pinion. The results will be used as a reference for selecting the differential case washer LH and RH. Select a washer from the table until the backlash measured value is in the standard range. Washer Thickness (LH) WASHER THICKNESS SPECIFICATION Thickness mm (in.) Thickness mm (in.) Thickness mm (in.) 2.11 to 2.13 (0.0831 to 0.0839) 2.43 to 2.45 (0.0957 to 0.0965) 2.75 to 2.77 (0.1083 to 0.1091) 2.13 to 2.15 (0.0839 to 0.0846) 2.45 to 2.47 (0.0965 to 0.0972) 2.77 to 2.79 (0.1091 to 0.1098) 2.15 to 2.17 (0.0846 to 0.0854) 2.47 to 2.49 (0.0972 to 0.0980) 2.79 to 2.81 (0.1098 to 0.1106) 2.17 to 2.19 (0.0854 to 0.0862) 2.49 to 2.51 (0.0980 to 0.0988) 2.81 to 2.83 (0.1106 to 0.1114) 2.19 to 2.21 (0.0862 to 0.0870) 2.51 to 2.53 (0.0988 to 0.0996) 2.83 to 2.85 (0.1114 to 0.1122) 2.21 to 2.23 (0.0870 to 0.0878) 2.53 to 2.55 (0.0996 to 0.1004) 2.85 to 2.87 (0.1122 to 0.1130) 2.23 to 2.25 (0.0676 to 0.0886) 2.55 to 2.57 (0.1004 to 0.1012) 2.87 to 2.89 (0.1130 to 0.1138) 2.25 to 2.27 (0.0886 to 0.0894) 2.57 to 2.59 (0.1012 to 0.1020) 2.89 to 2.91 (0.1138 to 0.1146) 2.27 to 2.29 (0.0894 to 0.0902) 2.59 to 2.61 (0.1020 to 0.1028) 2.91 to 2.93 (0.1146 to 0.1154) 2.29 to 2.31 (0.0902 to 0.0909) 2.61 to 2.63 (0.1028 to 0.1035) 2.93 to 2.95 (0.1154 to 0.1161) 2.31 to 2.33 (0.0909 to 0.0917) 2.63 to 2.65 (0.1035 to 0.1043) 2.95 to 2.97 (0.1161 to 0.1169) 2.33 to 2.35 (0.0917 to 0.0925) 2.65 to 2.67 (0.1043 to 0.1051) 2.97 to 2.99 (0.1169 to 0.1177) 2.35 to 2.37 (0.0925 to 0.0933) 2.67 to 2.69 (0.1051 to 0.1059) 2.99 to 3.01 (0.1177 to 0.1185) 2.37 to 2.39 (0.0933 to 0.0941) 2.69 to 2.71 (0.1059 to 0.1067) 3.01 to 3.03 (0.1185 to 0.1193) 2.39 to 2.41 (0.0941 to 0.0949) 2.71 to 2.73 (0.1067 to 0.1075) 3.03 to 3.05 (0.1193 to 0.1201) 2.41 to 2.43 (0.0949 to 0.0957) 2.73 to 2.75 (0.1075 to 0.1083) - Washer Thickness (RH) WASHER THICKNESS SPECIFICATION Thickness mm (in.) Thickness mm (in.) Thickness mm (in.) 2.09 to 2.11 (0.0823 to 0.0831) 2.43 to 2.45 (0.0957 to 0.0965) 2.77 to 2.79 (0.1091 to 0.1098) 2.11 to 2.13 (0.0831 to 0.0839) 2.45 to 2.47 (0.0965 to 0.0972) 2.79 to 2.81 (0.1098 to 0.1106) 2.13 to 2.15 (0.0839 to 0.0847) 2.47 to 2.49 (0.0972 to 0.0980) 2.81 to 2.83 (0.1106 to 0.1114) 2.15 to 2.17 (0.0847 to 0.0854) 2.49 to 2.51 (0.0980 to 0.0988) 2.83 to 2.85 (0.1114 to 0.1122) 2.17 to 2.19 (0.0854 to 0.0862) 2.51 to 2.53 (0.0988 to 0.0996) 2.85 to 2.87 (0.1122 to 0.1130) 2.19 to 2.21 (0.0862 to 0.0870) 2.53 to 2.55 (0.0996 to 0.1004) 2.87 to 2.89 (0.1130 to 0.1138) 2.21 to 2.23 (0.0870 to 0.0878) 2.55 to 2.57 (0.1004 to 0.1012) 2.89 to 2.91 (0.1138 to 0.1146) 2.23 to 2.25 (0.0878 to 0.0886) 2.57 to 2.59 (0.1012 to 0.1020) 2.91 to 2.93 (0.1146 to 0.1154) 2.25 to 2.27 (0.0886 to 0.0894) 2.59 to 2.61 (0.1020 to 0.1028) 2.93 to 2.95 (0.1155 to 0.1161) 2.27 to 2.29 (0.0894 to 0.0902) 2.61 to 2.63 (0.1028 to 0.1035) 2.95 to 2.97 (0.1161 to 0.1169) 2.29 to 2.31 (0.0902 to 0.0909) 2.63 to 2.65 (0.1035 to 0.1043) 2.97 to 2.99 (0.1169 to 0.1177) 2.31 to 2.33 (0.0909 to 0.0917) 2.65 to 2.67 (0.1043 to 0.1051) 2.99 to 3.01 (0.1177 to 0.1185) 2.33 to 2.35 (0.0917 to 0.0925) 2.67 to 2.69 (0.1051 to 0.1059) 3.01 to 3.03 (0.1185 to 0.11929) 2.35 to 2.37 (0.0925 to 0.0933) 2.69 to 2.71 (0.1059 to 0.1067) 3.03 to 3.05 (0.1193 to 0.1201) 2.37 to 2.39 (0.0933 to 0.0941) 2.71 to 2.73 (0.1067 to 0.1075) 3.05 to 3.07 (0.1201 to 0.1209) 2.39 to 2.41 (0.0941 to 0.0949) 2.73 to 2.75 (0.1075 to 0.1083) - 2.41 to 2.43 (0.0949 to 0.0957) 2.75 to 2.77 (0.1083 to 0.1091) - HINT: Make sure to increase the thickness of the LH and RH differential case washer by the same amount each time until the backlash is in the standard range. Perform the tooth contact pattern inspection for the differential ring gear and drive pinion. The results will be used as a reference for selecting the differential case washer LH and RH. When adjusting the backlash, adjust to within 0.18 mm (0.00709 in.) of the average of the measurements.
INSPECT AND ADJUST TOTAL PRELOAD Using SST and a torque wrench, measure the preload with the teeth of the drive pinion and ring gear in contact. SST 09229-55010 Total Preload (at starting) TORQUE SPECIFICATION Bearing Standard New 4.8 to 5.7 N*m (49 to 58 kgf*cm, 42 to 50 in.*lbf) Reused 3.3 to 3.9 N*m (34 to 40 kgf*cm, 30 to 35 in.*lbf) HINT: When the value is outside the standard range, adjust using the differential case washer on the ring gear tooth side. When the value is less than the lower limit of the standard range, replace the differential case washer with a thicker one. When the value is more than the upper limit of the standard range, replace the differential case washer with a thinner one. For reassembly purposes, record the measured value. Set a lever probe to a dial indicator. Insert the probe into the drain plug hole and set it onto the edge of one of the teeth of the ring gear at a right angle. Using SST, turn the differential case clockwise and counterclockwise and measure the ring gear backlash while holding the companion flange with your hand. SST 09564-50010 Standard backlash: 0.13 to 0.23 mm (0.00512 to 0.00905 in.) HINT: Measure at 3 or more areas around the circumference of the ring gear. If the backlash is not in the standard range, increase the LH and RH differential case washer by the same amount until the backlash is in the standard range. Record the measured value and use it when selecting the differential case washer. Perform the tooth contact pattern inspection for the differential ring gear and drive pinion. The results will be used as a reference for selecting the differential case washer LH and RH. When adjusting the backlash, adjust to within 0.18 mm (0.00709 in.) of the average of the measurements. Recheck the total preload.
INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION Remove the differential carrier from the overhaul attachment. Remove the 11 bolts and retainer from the differential carrier. Remove the differential case from the differential carrier. NOTE: Do not damage the case bearing and ring gear. Uniformly apply a light coat of Prussian blue on both sides of 4 teeth on the differential ring gear. Install the differential case to the differential carrier. NOTE: Do not damage the case bearing and ring gear. Install the retainer to the differential carrier with the 11 bolts. Torque: 58 N*m (591 kgf*cm, 43 ft.*lbf) Rotate the companion flange several times in the forward and backward rotation directions. Remove the 11 bolts and retainer from the differential carrier. Remove the differential case from the differential carrier. NOTE: Do not damage the case bearing and ring gear. Inspect the tooth contact pattern. HINT: The patterns indicated by the Prussian blue are the tooth contact locations. NOTE: Check the tooth contact pattern at 4 or more positions around the circumference of the ring gear. If the tooth contact is not proper, select a drive pinion spacer adjust shim from the table and perform the tooth contact pattern inspection again. NOTE: It is possible for the backlash to be adjusted within the standard range in instances of face contact and flank contact. If the thickness of the drive pinion spacer adjust shim changes, perform the backlash adjustment and inspect the total preload. Adjust Shim Thickness SHIM THICKNESS SPECIFICATION Thickness mm (in.) Thickness mm (in.) Thickness mm (in.) 0.99 to 1.01 (0.0354 to 0.0398) 1.17 to 1.19 (0.0461 to 0.0469) 1.35 to 1.37 (0.0531 to 0.0539) 1.01 to 1.03 (0.0398 to 0.0406) 1.19 to 1.21 (0.0469 to 0.0476) 1.37 to 1.39 (0.0539 to 0.0547) 1.03 to 1.05 (0.0406 to 0.0413) 1.21 to 1.23 (0.0476 to 0.0484) 1.39 to 1.41 (0.0547 to 0.0555) 1.05 to 1.07 (0.0413 to 0.0421) 1.23 to 1.25 (0.0484 to 0.0492) 1.41 to 1.43 (0.0555 to 0.0563) 1.07 to 1.09 (0.0421 to 0.0429) 1.25 to 1.27 (0.0492 to 0.0500) 1.43 to 1.45 (0.0563 to 0.0571) 1.09 to 1.11 (0.0429 to 0.0437) 1.27 to 1.29 (0.0500 to 0.0508) 1.45 to 1.47 (0.0571 to 0.0579) 1.11 to 1.13 (0.0437 to 0.0445) 1.29 to 1.31 (0.0508 to 0.0516) 1.47 to 1.49 (0.0579 to 0.0587) 1.13 to 1.15 (0.0445 to 0.0453) 1.31 to 1.33 (0.0516 to 0.0524) - 1.15 to 1.17 (0.0453 to 0.0461) 1.33 to 1.35 (0.0524 to 0.0531)
REMOVE DIFFERENTIAL CASE Remove the 11 bolts and retainer from the differential carrier. Remove the differential case from the differential carrier. NOTE: Do not damage the case bearing and ring gear.
REMOVE FRONT DRIVE PINION COMPANION FLANGE FRONT NUT Install the differential carrier to the overhaul attachment Using SST to hold the flange, remove the flange nut. SST 09213-58013, 09330-00021, 09229-55010 NOTE: Perform the removal while supporting the overhaul attachment.
REMOVE FRONT DRIVE PINION COMPANION FLANGE FRONT SUB-ASSEMBLY Using SST, remove the companion flange from the differential carrier. SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03030, 09956-03020) HINT: Before using SST center bolt, apply hypoid gear oil to its threads and tip.
REMOVE FRONT DIFFERENTIAL DRIVE PINION OIL SLINGER Remove the oil slinger from the differential carrier.
REMOVE DIFFERENTIAL DRIVE PINION Remove the differential carrier together with the overhaul attachment from the engine stand. Set the differential carrier to an overhaul stand, etc., as shown in the illustration. Using a press, press out the drive pinion and bearing inner race. NOTE: Do not drop the drive pinion and bearing inner race. Install the differential carrier to the overhaul attachment as it was installed previously. Install the differential carrier together with overhaul attachment to the engine stand.
INSTALL FRONT DIFFERENTIAL DRIVE PINION BEARING SPACER Install a new drive pinion bearing spacer to the drive pinion.
INSTALL FRONT DRIVE PINION REAR TAPERED ROLLER BEARING INNER RACE Using SST and the companion flange, press the bearing inner race into the differential carrier. SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03040, 09956-03060) NOTE: As the drive pinion is supported by hand until SST is installed, be careful not to drop the drive pinion. Apply grease to the threads and tip of SST center bolt before use. Using SST, remove the companion flange from the differential carrier. HINT: Before using SST center bolt, apply hypoid gear oil to its threads and tip.
INSTALL FRONT DIFFERENTIAL DRIVE PINION OIL SLINGER Install the oil slinger to the differential carrier.
INSTALL FRONT DIFFERENTIAL CARRIER OIL SEAL Using SST and a hammer, tap in a new oil seal. SST 09309-36010,09502-24010 Standard depth: 6.2 to 7.2 mm (0.244 to 0.283 in.) NOTE: Using a vernier caliper, measure the depth of the oil seal. Measure at 3 or more areas around the circumference of the oil seal. Make sure the difference between the maximum and minimum measured values is less than 0.75 mm (0.0295 in.), as a greater difference may lead to oil leaks. Tap the oil seal uniformly so that the oil seal is straight. Do not excessively tap the oil seal. HINT: First, uniformly tap in the oil seal until it is flush with the edge of the carrier, then tap it little by little until the depth is within the standard range. Apply MP grease to the lip of the oil seal.
INSTALL FRONT DIFFERENTIAL BREATHER PLUG OIL DEFLECTOR Install the oil deflector to the differential carrier with the 2 bolts. Torque: 7.0 N*m (71 kgf*cm, 62 in.*lbf)
INSTALL FRONT DRIVE PINION COMPANION FLANGE FRONT SUB-ASSEMBLY Using SST, install the companion flange to the drive pinion. SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03040, 09956-03060) NOTE: Do not insert the companion flange excessively as the preload will be adjusted in the following procedure. HINT: Before using SST center bolt, apply hypoid gear oil to its threads and tip.
INSPECT DRIVE PINION PRELOAD Coat the threads of a new drive pinion companion flange front nut with hypoid gear oil LSD. Using SST and a torque wrench, tighten the drive pinion companion flange front nut while checking the preload. SST 09213-58013, 09330-00021, 09229-55010 Maximum torque: 490 N*m (4996 kgf*cm, 361 ft.*lbf) NOTE: Tighten the flange nut little by little to reach the specified preload, being careful not to exceed the maximum torque. Do not overtighten the nut, as the threads will become damaged. Measure the preload after rotating the companion flange several times in the forward and backward directions to make sure the bearing is operating correctly. Perform the installation while supporting the overhaul attachment. Using SST and a torque wrench, measure the drive pinion preload. SST 09229-55010 HINT: Record the drive pinion preload for the total preload inspection. Drive Pinion Preload (at starting) TORQUE SPECIFICATION Bearing Standard New 3.9 to 4.6 N*m (40 to 46 kgf*cm, 35 to 40 in.*lbf) Reused 2.8 to 3.1 N*m (28 to 32 kgf*cm, 25 to 27 in.*lbf) NOTE: The bearing spacer is made of plastic and changes shape when used. If the starting torque of the drive pinion is exceeded by mistake, make sure to replace the bearing spacer with a new one. HINT: If the preload is insufficient, tighten the nut 5 to 10° at a time until the preload is in the standard range. If the tightening torque of the flange nut exceeds the specified torque but the preload is still insufficient, loosen the flange nut. Then check if the flange nut and drive pinion threads are damaged. If there are no problems, replace the bearing spacer, apply hypoid gear oil LSD to the threads of the drive pinion companion flange front nut and repeat the procedure above.
INSTALL NO. 1 FRONT DIFFERENTIAL CASE SUB-ASSEMBLY Remove the differential carrier from the overhaul attachment. Install the differential case to the differential carrier. NOTE: Do not damage the case bearing and ring gear.
INSTALL FRONT DIFFERENTIAL CARRIER RETAINER SUB-ASSEMBLY Remove the seal packing attached on the differential carrier and side bearing retainer using a scraper and wire brush. NOTE: Do not scratch the fitting surface. Check that there is no foreign matter or damage on the installation surface of the side bearing retainer. Apply seal packing to the differential carrier as shown in the illustration. Seal packing: Toyota Genuine Seal Packing 1281, Three bond 1281 or equivalent NOTE: Apply the seal packing in a continuous line, approximately 2 to 3 mm (0.0787 to 0.118 in.) in diameter. Overlap the seal packing at least 10 mm (0.394 in.) at the beginning and the end of application. Install the differential carrier cover within 3 minutes of application. Install the retainer with the 11 bolts. Torque: 58 N*m (591 kgf*cm, 43 ft.*lbf) NOTE: Do not fill the oil or drive immediately after installing the differential carrier cover. Leave the vehicle for at least 1 hour. Also, avoid sudden acceleration and deceleration for at least 12 hours after application. Set the differential carrier to an overhaul stand as shown in the illustration.
INSTALL FRONT DIFFERENTIAL BREATHER PLUG Install the breather plug to the differential carrier. Torque: 21 N*m (214 kgf*cm, 16 ft.*lbf)
INSPECT TOTAL PRELOAD Using SST and a torque wrench, measure the preload with the teeth of the drive pinion and ring gear in contact. SST 09229-55010 Total Preload (at starting) TORQUE SPECIFICATION Bearing Standard New 4.8 to 5.7 N*m (49 to 58 kgf*cm, 42 to 50 in.*lbf) Reused 3.3 to 3.9 N*m (34 to 40 kgf*cm, 30 to 35 in.*lbf)
INSPECT DIFFERENTIAL RING GEAR BACKLASH Set a lever probe to a dial indicator. Insert the probe into the drain plug hole and set it onto the edge of one of the teeth of the ring gear at a right angle. Using SST, turn the differential case clockwise and counterclockwise and measure the ring gear backlash while holding the companion flange with your hand. SST 09564-50010 Standard backlash: 0.13 to 0.23 mm (0.00512 to 0.00905 in.) HINT: Measure at 3 or more areas around the circumference of the ring gear.
INSTALL FRONT DRIVE PINION COMPANION FLANGE FRONT SUB-ASSEMBLY Wipe the inside surface of the companion flange with a cloth or equivalent and remove dirt and foreign matter. Perform the vertical runout inspection. Set a lever probe to a dial indicator and set the probe at a right angle to the inner surface of the companion flange. Measure the vertical runout of the companion flange. Maximum runout: 0.12 mm (0.00472 in.) Perform the lateral runout inspection. Set a dial indicator at a right angle to the surface of the companion flange as shown in the illustration. Measure the horizontal runout of the companion flange. Maximum runout: 0.08 mm (0.00314 in.)
STAKE FRONT DRIVE PINION COMPANION FLANGE FRONT NUT Using SST and a hammer, stake the flange nut. SST 09930-00010
INSTALL FRONT DIFFERENTIAL CASE OIL SEAL LH: Using SST and a hammer, install a new oil seal LH. SST 09950-60010 (09951-00570), 09950-70010 (09951-07100) Standard depth: -0.5 to 0.5 mm (-0.0197 to 0.0196 in.) NOTE: Tap the oil seal uniformly so that the oil seal is straight. Do not excessively tap the oil seal. Make sure the difference between the maximum and minimum measured values is less than 0.57 mm (0.0224 in.), as a greater difference may lead to oil leaks. Apply MP grease to the lips of the oil seal. RH: Using SST and a hammer, install a new oil seal RH. SST 09608-32010, 09950-70010 (09951-07100) Standard depth: 1.0 to 2.0 mm (0.0394 to 0.0787 in.) NOTE: Tap the oil seal uniformly so that the oil seal is straight. Do not excessively tap the oil seal. Make sure the difference between the maximum and minimum measured values is less than 0.47 mm (0.0185 in.), as a greater difference may lead to oil leaks. Apply MP grease to the lips of the oil seal.
INSTALL FRONT DIFFERENTIAL FILLER PLUG HINT: Perform this procedure as necessary. Using a 10 mm socket hexagon wrench, install a new gasket and filler plug to the differential carrier. Torque: 39 N*m (398 kgf*cm, 29 ft.*lbf)
INSTALL FRONT DIFFERENTIAL DRAIN PLUG HINT: Perform this procedure as necessary. Using a 10 mm socket hexagon wrench, install a new gasket and drain plug to the differential carrier. Torque: 39 N*m (398 kgf*cm, 29 ft.*lbf)
REMOVE FRONT DIFFERENTIAL CARRIER ASSEMBLY FROM OVERHAUL STAND Remove the differential carrier from the overhaul attachment stand's.

Scheme 79

INSTALL FRONT DIFFERENTIAL CARRIER ASSEMBLY Support the differential carrier assembly with a jack and temporarily install it to the oil pan with the 4 bolts. CAUTION: As the differential carrier assembly is very heavy, securely support it with the jack. Align the side bearing retainer and oil pan so that their ends are aligned and tighten the 4 bolts to install the differential carrier assembly. Torque: 81 N*m (826 kgf*cm, 60 ft.*lbf)
INSTALL ENGINE ASSEMBLY TO VEHICLE Remove the engine from the engine stand and then install it to the vehicle (See «INSTALLATION» ).
ADD DIFFERENTIAL OIL (See «ON-VEHICLE INSPECTION» )

Scheme 80

Scheme 80: COMPONENTS

Scheme 81

Scheme 82

Scheme 83

Scheme 83: REMOVAL

REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY Remove the rear drive shaft assembly (See «REMOVAL»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) ).
REMOVE REAR DRIVE SHAFT ASSEMBLY Remove the rear drive shaft assembly (See «REMOVAL»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) ).
REMOVE REAR DIFFERENTIAL CARRIER ASSEMBLY Support the rear differential carrier assembly with a transmission jack. CAUTION: As the rear differential carrier assembly is very heavy, securely support it with the transmission jack. Perform this procedure with several people supporting the rear differential carrier assembly so that it does not tilt or fall. Using SST or a 12 mm socket hexagon wrench, remove the 3 bolts (A) from the rear No. 1 and No. 2 differential mount cushions. Remove the 2 bolts (B). Slowly lower the transmission jack. Then remove the rear differential mount stopper upper and lower, and rear differential carrier assembly from the rear suspension member. NOTE: Do not drop the rear differential carrier assembly. When removing the rear differential carrier assembly, do not damage the installation surface.

Scheme 84

Scheme 84: DISASSEMBLY

Scheme 85

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Scheme 110

Scheme 111

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Scheme 115

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Scheme 123

Scheme 124

Scheme 125

Scheme 126

Scheme 127

Scheme 128

Scheme 129

Scheme 130

REMOVE REAR DIFFERENTIAL CARRIER COVER BREATHER PLUG Remove the breather plug from the differential carrier cover.
REMOVE REAR DIFFERENTIAL CARRIER COVER Remove the 8 bolts from the differential carrier cover. Using a brass bar and a hammer, remove the differential carrier cover from the differential carrier. NOTE: Set the brass bar on the ribbed part of the differential carrier cover. Do not damage the installation surface of the differential carrier.
REMOVE REAR DIFFERENTIAL BREATHER PLUG OIL DEFLECTOR Remove the bolt and oil deflector from the differential carrier cover.
FIX DIFFERENTIAL CARRIER ASSEMBLY REAR Set the differential carrier to an overhaul stand as shown in the illustration. HINT: Install the differential carrier to the back surface side of the ring gear as shown in the illustration.
INSPECT DIFFERENTIAL RING GEAR RUNOUT Place a dial indicator so that it is perpendicular to the back surface of the ring gear. Rotate the ring gear and measure the ring gear runout. Maximum runout: 0.05 mm (0.0020 in.) HINT: If the runout exceeds the specified maximum value, remove the ring gear and check the runout of the differential case.
INSPECT DIFFERENTIAL RING GEAR BACKLASH Place a dial indicator on the tip of the ring gear tooth at a right angle. Fix the companion flange in place, and measure the ring gear backlash. Standard backlash: 0.08 to 0.13 mm (0.0031 to 0.0051 in.) NOTE: Measure the ring gear at 3 or more different places.
INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION Uniformly apply a light coat of Prussian blue on both sides of 4 teeth on the differential ring gear. Rotate the companion flange several times in the forward and backward rotation directions. Inspect the tooth contact pattern. NOTE: Check the tooth contact pattern at 4 positions around the circumference of the ring gear. HINT: The patterns indicated by the Prussian blue are the tooth contact locations.
INSPECT DIFFERENTIAL SIDE GEAR BACKLASH Place a dial indicator on the tip of the pinion gear tooth at a right angle. old the side gear in the differential case and check that the backlash is 0 mm (0 in.). If not, replace the rear differential case with a new one.
INSPECT RUNOUT OF DIFFERENTIAL DRIVE PINION Using a dial indicator, measure the runout of the drive pinion shaft at a position 10 mm (0.39 in.) from the end of the shaft. Maximum runout: 0.08 mm (0.0031 in.)
INSPECT DIFFERENTIAL DRIVE PINION PRELOAD Using SST and a torque wrench, measure the drive pinion preload. SST 09229-55010 Standard drive pinion preload (at starting): 0.5 to 0.8 N*m (5 to 8 kgf*cm, 4.3 to 6.9 in.*lbf)
INSPECT TOTAL PRELOAD Using SST and a torque wrench, measure the total preload. SST 09229-55010 Standard total preload (at starting): Drive pinion preload plus 0.96 to 2.17 N*m (9.8 to 22.1 kgf*cm, 4.07 to 12.13 in.*lbf)
REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL Using SST, tap the 2 oil seals. SST 09308-00010
REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING Install the 2 bolts and SST to the differential carrier. SST 09571-50010 Tighten SST bolt until SST disc lightly touches the case bearing outer race. Install a dial indicator to the rear differential carrier. Tighten SST bolt and alter the differential carrier's shape to create a 0.1 mm (0.004 in.) clearance between the case bearing outer race and side gear shaft snap ring. NOTE: Observe the dial indicator to ensure that the shape of the differential carrier does not change more than 0.2 mm (0.008 in.). HINT: For reassembly purposes, measure the thickness of the differential side gear shaft snap ring, and record the result. Approximately 0.1 mm (0.004 in.) clearance between the case bearing outer race and the side gear shaft snap ring is sufficient for the washer to move slightly. Using snap ring pliers, remove the side gear shaft snap ring on the ring gear tooth side. HINT: For reassembly purposes, measure the thickness of the differential side gear shaft snap ring, and record the result. Place distinguishing marks on the left and right side differential side gear shaft snap rings to distinguish them (back surface side, tooth side). Then store them separately. Remove the dial indicator from the differential carrier. Loosen SST bolt until SST disc separates from the tooth side of the differential case bearing outer race. HINT: Do not remove SST.
REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING Using SST and a hammer, create a clearance between the case bearing outer race on the back surface of the ring gear and side gear shaft snap ring. SST 09608-32010, 09950-70010 (09951-07200) HINT: The clearance is not visible, but tapping SST with a hammer 3 or 4 times should be enough. Using snap ring pliers, remove the side gear shaft snap ring on the back surface of the ring gear. HINT: For reassembly purposes, measure the thickness of the differential side gear shaft snap ring, and record the result. Place distinguishing marks on the left and right side differential side gear shaft snap rings to distinguish them (back surface side, tooth side). Then store them separately.
REMOVE REAR DIFFERENTIAL CASE BEARING Tighten SST bolt and push out the case bearing outer race on the back surface of the ring gear. SST 09571-50010 NOTE: Do not drop the case bearing outer race. HINT: For reassembly purposes, mark the installation positions of the differential case bearing outer race and differential side gear shaft snap ring. Place distinguishing marks on the left and right side differential case bearing outer races to distinguish them (back surface side, tooth side). Then store them separately. Remove the 2 bolts and SST from the differential carrier.
REMOVE REAR DIFFERENTIAL CASE BEARING Raise the ring gear of the differential case slightly and remove the ring gear tooth side case bearing outer race. NOTE: Do not drop the case bearing outer race. HINT: For reassembly purposes, mark the installation positions of the differential case bearing outer race and differential side gear shaft snap ring. Place distinguishing marks on the left and right side differential case bearing outer races to distinguish them (back surface side, tooth side). Then store them separately.
REMOVE REAR DIFFERENTIAL CASE SUB-ASSEMBLY Pull out the differential case from the back surface side of the ring gear, and remove it from the differential carrier. NOTE: Do not damage the case bearing.
REMOVE REAR DRIVE PINION NUT Using SST and a hammer, unstake the staked part of the drive pinion nut. SST 09930-00010 NOTE: Be sure to use SST with the tapered surface facing the shaft. Do not grind the tip of SST with a grinder, etc. Completely unstake the drive pinion nut to prevent damaging the threads of the drive pinion. Using SST, fix the companion flange in place. SST 09330-00021, 09950-30012 (09955-03040) Perform the removal while supporting the overhaul attachment. SST 09229-55010
REMOVE REAR DRIVE PINION COMPANION FLANGE SUB-ASSEMBLY REAR Using SST, remove the companion flange. SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03040, 09956-03060) NOTE: Apply grease to the threads and tip of SST center bolt before use.
REMOVE REAR DIFFERENTIAL DUST DEFLECTOR HINT: Perform this procedure only when the dust deflector is damaged. Using SST and a press, press out the dust deflector. SST 09950-00020, 09950-60010 (09951-00440), 09950-70010 (09951-07100) NOTE: Perform this procedure while tightening SST nut to secure the contact surfaces of SST and the dust deflector. Do not drop the companion flange.
REMOVE REAR DIFFERENTIAL CARRIER OIL SEAL Using SST, remove the oil seal from the differential carrier. SST 09308-00010
REMOVE REAR DIFFERENTIAL DRIVE PINION OIL SLINGER Using a magnet hand, remove the oil slinger from the differential carrier.
REMOVE REAR DIFFERENTIAL CARRIER ASSEMBLY Using a press, press out the drive pinion from the differential carrier. NOTE: Do not drop the drive pinion.
REMOVE REAR DIFFERENTIAL DRIVE PINION BEARING SPACER Remove drive pinion bearing spacer to the drive pinion.
REMOVE REAR DRIVE PINION FRONT TAPERED ROLLER BEARING Remove the rear drive pinion front tapered roller bearing inner race from the differential carrier. Using a brass bar and a hammer, tap out the rear drive pinion front tapered roller bearing outer race from the differential carrier.
REMOVE REAR DRIVE PINION REAR TAPERED ROLLER BEARING Using SST and a press, press out the rear drive pinion rear tapered roller bearing inner race from the drive pinion. SST 09950-00020 NOTE: Perform this procedure while tightening SST nut to secure the contact surfaces of SST and the rear tapered roller bearing inner race. Do not drop the drive pinion. Using a brass bar and a hammer, tap out the rear drive pinion rear tapered roller bearing outer race and drive pinion washer from the differential carrier. NOTE: Make sure to perform this procedure with the brass bar placed on the differential drive pinion washer. Do not damage the differential carrier assembly. HINT: For reassembly purposes, measure the thickness of the differential drive pinion washer, and record the result.
REMOVE DIFFERENTIAL RING GEAR Hold the differential case in a vise between aluminum plates. NOTE: Do not overtighten the vise. Put matchmarks on the ring gear and differential case. Remove the 10 ring gear set bolts. Using a plastic-faced hammer, tap on the ring gear to separate it from the differential case. HINT: Place a cloth on the tooth side of the ring gear to prevent damage.
INSPECT RUNOUT OF REAR DIFFERENTIAL CARRIER ASSEMBLY HINT: Only perform this procedure if the runout exceeded the maximum value during the inspection of the ring gear runout inspection. Install the differential case to the differential carrier. NOTE: Do not damage the case bearing. Using SST and a hammer, tap in the case bearing outer race on the ring gear tooth side. SST 09608-32010, 09950-70010 (09951-07200) HINT: Tap in the case bearing outer race until half of the side gear shaft snap ring groove of the differential carrier can be seen. Install the 2 bolts and SST from the differential carrier. SST 09571-50010 Tighten SST bolt until SST disc lightly touches the case bearing outer race. HINT: Tighten SST bolt to apply preload to the differential case bearing. Using SST and a hammer, tap in the case bearing outer race on the ring gear back surfaces side. SST 09608-32010, 09950-70010 (09951-07200) HINT: Tap in the case bearing outer race until it touches the case bearing inner race roller bearing. Using snap ring pliers, remove the side gear shaft snap ring on the back surface of the ring gear. Place a dial indicator so that it is perpendicular to the differential case flange face. Using a dial indicator, measure the differential case runout. Maximum runout: 0.05 mm (0.0020 in.) HINT: Do not remove SST. Using snap ring pliers, remove the side gear shaft snap ring on the back surface of the ring gear. Tighten SST bolt to push out the ring gear back surfaces side case bearing outer race. SST 09571-50010 NOTE: Do not drop the case bearing outer race. Remove the 2 bolts and SST from the differential carrier. Raise the ring gear side of the differential case slightly and remove the ring gear tooth side case bearing outer race. Remove the differential case from the differential carrier. NOTE: Do not damage the case bearing.
REMOVE REAR DIFFERENTIAL CASE BEARING HINT: Do not remove the rear differential case bearing unless replacing the differential case or differential case bearing. Hold the differential case in a vise between aluminum plates. NOTE: Do not overtighten the vise. Using SST, remove the case bearing inner race LH and RH from the differential case. SST 09950-40011 (09951-04020, 09952-04010, 09953-04030, 09954-04010, 09955-04061, 09957-04010, 09958-04011), 09950-60010 (09951-00350, 09951-00480, 09952-06010) NOTE: Do not deform the bearing cage if the bearing is to be reused. Hook SST claw from the recess of the differential case to the bearing inner race. Apply grease to the threads and tip of SST center bolt before use.
INSPECT DIFFERENTIAL SIDE GEAR BACKLASH Hold the differential case in a vise between aluminum plates. NOTE: Do not overtighten the vise. Place a dial indicator on the tip of the pinion gear tooth at a right angle. Hold the side gear in the differential case and check that the backlash is 0 mm (0 in.). If the backlash is not as specified, replace the rear differential case with a new one.

Scheme 131

Scheme 131: REASSEMBLY

Scheme 132

Scheme 133

Scheme 134

Scheme 135

Scheme 136

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Scheme 138

Scheme 139

Scheme 140

Scheme 141

Scheme 142

Scheme 143

Scheme 144

Scheme 145

Scheme 146

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Scheme 151

Scheme 152

Scheme 153

Scheme 154

Scheme 155

Scheme 156

Scheme 157

Scheme 158

Scheme 159

Scheme 160

Scheme 161

INSTALL DIFFERENTIAL RING GEAR Clean the differential ring gear set bolt hole. Heat the ring gear approximately 100°C (212°F) in boiling water. CAUTION: Use thick gloves to protect your hands as the ring gear is hot. Carefully take the ring gear out of the boiling water. After the moisture on the ring gear has completely evaporated, quickly install the ring gear to the differential case. HINT: Align the rear differential case bolt holes and differential ring gear screw holes. Hold the differential case in a vise between aluminum plates. NOTE: Do not overtighten the vise. Apply thread lock adhesive to the threads and flanges of 10 new differential case bolts. NOTE: As the differential case bolts are plastic region tightening bolts, do not reuse them. Temporarily tighten the 10 differential case bolts uniformly in several passes, and then tighten them to the torque specification. Torque: 64 N*m (652 kgf*cm, 47 ft.*lbf) NOTE: Tighten the bolts after the ring gear has sufficiently cooled down. Install the differential case bolts by tightening diametrically opposite pairs uniformly in several passes. Tighten the bolts further by 60° to 90°. NOTE: Tighten the bolts in diametrically opposite pairs.
INSTALL REAR DIFFERENTIAL CASE BEARING Using SST and a press, press in the case bearing inner race LH and RH to the differential case. SST 09950-60010 (09951-00560, 09951-00570), 09950-70010 (09951-07100) NOTE: Do not apply hypoid gear oil to a new bearing. Do not deform the bearing cage. Set SST to the center of the differential case. If the bearing is replaced, replace it with the bearing outer race as a set.
INSTALL REAR DRIVE PINION REAR TAPERED ROLLER BEARING Using SST and a press, press in the rear drive pinion rear tapered roller bearing inner race to the drive pinion. SST 09316-60011 (09316-00031), 09612-10093 (09613-22011) NOTE: Do not apply hypoid gear oil to a new bearing. HINT: Disassemble SST (09613-22011), and only use the pipe part. Using SST and a press, press in the rear drive pinion rear tapered roller bearing outer race and drive pinion washer. SST 09950-70010 (09951-07200), 09255-10012 NOTE: Do not apply hypoid gear oil to a new bearing. HINT: Select a drive pinion washer of the same thickness as the one removed.
INSTALL REAR DRIVE PINION FRONT TAPERED ROLLER BEARING Using SST and a press, press in the rear drive pinion front tapered roller bearing outer race. SST 09950-60020 (09951-00710), 09950-70010 (09951-07100) NOTE: Do not apply hypoid gear oil to a new bearing.
INSTALL REAR DIFFERENTIAL DUST DEFLECTOR HINT: Perform this procedure only when replacing the dust deflector. Using SST and a press, insert a new dust deflector into the companion flange. SST 09316-60011 (09316-00011) NOTE: Slowly press in the dust deflector but not excessively. If any burrs remain after pressing in the deflector, remove them.
INSTALL REAR DRIVE PINION FRONT TAPERED ROLLER BEARING Install the rear drive pinion front tapered roller bearing inner race from the differential carrier.
INSTALL DIFFERENTIAL DRIVE PINION Using SST and a press, press in the differential drive pinion. SST 09316-60011 (09316-00011,09316-00041), 09608-04031 NOTE: Install the spacer and oil seal after performing the ring gear tooth contact pattern inspection adjustment. Make sure the press, SST and drive pinion are in a straight line when pressing. Do not forcefully press in the bearing. Do not apply hypoid gear oil to a new bearing.
INSTALL REAR DIFFERENTIAL DRIVE PINION OIL SLINGER Install the drive pinion oil slinger.
ADJUST DIFFERENTIAL DRIVE PINION PRELOAD Using SST, install the companion flange. SST 09950-30012 (09951-03010, 09954-03010, 09955-03040, 09956-03060) NOTE: Install the companion flange so that there is a slight looseness on the drive pinion because the bearing spacer is not yet installed. Apply grease to the threads and tip of SST center bolt before use. Using SST and a torque wrench, install a new drive pinion nut. SST 09229-55010, 09330-00021, 09950-30012 (09955-03040) Maximum torque: T=490 N*m {5000 kgf*cm 361 ft.*lbf} NOTE: Tighten the nut with a force of 100 N*m (1020 kgf*cm) while checking the starting torque of the drive pinion. As the bearing spacer is not installed, tighten the drive pinion nut little by little. Do not overtighten the nut. Do not overtighten the nut, as the threads will become damaged. Coat the threads the drive pinion nut and drive pinion with hypoid gear oil LSD. Perform the removal while supporting the overhaul attachment. For a more accurate measurement, rotate the bearing forward and backward before the inspection. Using SST and a torque wrench, measure the preload. SST 09229-55010 Standard drive pinion preload (at starting): New bearing: 1.12 to 1.70 N*m (11.4 to 17.3 kgf*cm, 9.9 to 15.0 in.*lbf) Reused bearing: 0.4 to 0.7 N*m (4.1 to 7.2 kgf*cm, 3.5 to 6.2 in.*lbf) NOTE: Record the preload for total preload measurement.
INSTALL REAR DIFFERENTIAL CASE SUB-ASSEMBLY Insert the differential case from the ring gear tooth side to install it. NOTE: Do not damage the case bearing and ring gear.
INSTALL REAR DIFFERENTIAL CASE BEARING Using SST and a hammer, tap in the ring gear tooth side case bearing outer race. SST 09608-32010, 09950-70010 (09951-07200) NOTE: Do not apply hypoid gear oil to a new bearing. HINT: Tap in the case bearing outer race until half of the side gear shaft snap ring groove of the differential carrier can be seen. Install the 2 bolts and SST to the differential carrier. SST 09571-50010 Tighten SST bolt until SST disc lightly touches the case bearing outer race. Using SST and a hammer, tap in the ring gear back surface side case bearing outer race. SST 09608-32010, 09950-70010 (09951-07200) NOTE: Do not apply hypoid gear oil to a new bearing. HINT: Tap in the case bearing outer race until it touches the case bearing inner race roller bearing.
ADJUST DIFFERENTIAL RING GEAR BACKLASH Using snap ring pliers, install a side gear shaft snap ring on the back surface of the ring gear. If the final gear set (drive pinion and ring gear) or differential case bearing are replaced, select and install the thinnest differential side gear shaft snap ring first. If the differential case bearing, ring gear, or drive pinion are reused, select and install a differential side gear shaft snap ring with the same thickness as the one before the disassembly first. Install a dial indicator to the differential carrier. Tighten SST bolt to alter the differential carrier's shape by approximately 0.1 mm (0.004 in.). SST 09571-50010 NOTE: Observe the dial indicator to ensure that the shape of the differential carrier does not change more than 0.2 mm (0.008 in.). HINT: Try to set the dial indicator as close as possible to the differential carrier cover side (upper side in illustration) of the differential case bearing outer race. Tighten SST bolt to apply the preload to the case bearing. Turn the ring gear clockwise and counterclockwise several times. Using a dial indicator, measure the backlash of the ring gear. Standard backlash: 0.08 to 0.13 mm (0.0031 to 0.0051 in.) NOTE: Measure at 3 or more areas around the circumference of the ring gear. HINT: Record the measured value, as it is used to select the differential side gear shaft snap ring. Perform the tooth contact pattern inspection for the differential ring gear and drive pinion. The results will be used as a reference for selecting the differential side gear shaft snap ring. If the measured value is not within the specified range, replace the ring gear side differential side gear shaft snap ring with one of a different thickness in the next step. Loosen the thinnest side gear shaft snap ring on the ring gear tooth side. Using SST and a hammer, tap the ring gear back surface side to create clearance between the differential case bearing outer race and the differential side gear shaft snap ring of the ring gear back surface side. SST 09608-32010, 09950-70010 (09951-07200) HINT: The clearance is not visible, but tapping SST with a hammer 3 or 4 times should be enough. Using snap ring pliers, remove the side gear shaft snap ring on the ring gear back surface side. Using snap ring pliers, install a side gear shaft snap ring with a different thickness than the one removed. HINT: When the side gear shaft snap ring thickness changes by 0.02 mm (0.0008 in.), the backlash also changes by 0.02 mm (0.0008 in.). Standard snap ring thickness SNAP RING THICKNESS SPECIFICATION Thickness mm (in.) Thickness mm (in.) Thickness mm (in.) 3.66 mm (0.1441 in.) 3.92 mm (0.1543 in.) 4.18 mm (0.1646 in.) 3.68 mm (0.1449 in.) 3.94 mm (0.1551 in.) 4.20 mm (0.1654 in.) 3.70 mm (0.1457 in.) 3.69 mm (0.1559 in.) 4.22 mm (0.1661 in.) 3.72 mm (0.1465 in.) 3.98 mm (0.1567 in.) 4.24 mm (0.1669 in.) 3.74 mm (0.1472 in.) 4.00 mm (0.1575 in.) 4.26 mm (0.1677 in.) 3.76 mm (0.1480 in.) 4.02 mm (0.1583 in.) 4.28 mm (0.1685 in.) 3.78 mm (0.1488 in.) 4.04 mm (0.1591 in.) 4.30 mm (0.1693 in.) 3.80 mm (0.1496 in.) 4.06 mm (0.1598 in.) 4.32 mm (0.1701 in.) 3.82 mm (0.1503 in.) 4.08 mm (0.1606 in.) 4.34 mm (0.1709 in.) 3.84 mm (0.1512 in.) 4.10 mm (0.1614 in.) 4.36 mm (0.1717 in.) 3.86 mm (0.1520 in.) 4.12 mm (0.1622 in.) 4.38 mm (0.1724 in.) 3.88 mm (0.1528 in.) 4.14 mm (0.1630 in.) 4.40 mm (0.1732 in.) 3.90 mm (0.1535 in.) 4.16 mm (0.1638 in.) 4.42 mm (0.1740 in.) Using a plastic-faced hammer, lightly tap the ring gear tooth side of the differential carrier. Install a dial indicator to the differential carrier. Tighten SST bolt to alter the differential carrier's shape approximately 0.1 mm (0.004 in.). SST 09571-50010 NOTE: Observe the dial indicator to ensure that the shape of the differential carrier does not change more than 0.2 mm (0.008 in). HINT: Try to set the dial indicator as close as possible to the differential carrier cover side (upper side in illustration) of the differential case bearing outer race. Tighten SST bolt to apply the preload to the case bearing. Place a dial indicator so that it is perpendicular to the top of the ring gear on the tooth side. Fix the companion flange in place by hand, and measure the ring gear backlash. Standard backlash: 0.08 to 0.13 mm (0.0031 to 0.0051 in.) NOTE: Measure the ring gear at 3 or more different places. If the measured value is not within the specified range, replace the ring gear back surface side differential side gear shaft snap ring with one of a different thickness. HINT: Record the measured value, as it is used to select the differential side gear shaft snap ring. Perform the tooth contact pattern inspection for the differential ring gear and drive pinion. The results will be used as a reference for selecting the differential side gear shaft snap ring. When adjusting the backlash, adjust to within 0.1 mm of the average of the measurements.
ADJUST DIFFERENTIAL SIDE BEARING PRELOAD Install a dial indicator to the differential carrier. Tighten SST bolt to alter the differential carrier's shape by approximately 0.1 mm (0.004 in.). SST 09571-50010 NOTE: Observe the dial indicator to ensure that the shape of the differential carrier does not change more than 0.2 mm (0.008 in.). HINT: Try to set the dial indicator as close as possible to the differential carrier cover side (upper side in illustration) of the differential case bearing outer race. Using snap ring pliers, install a side gear shaft snap ring on the ring gear tooth side. If the backlash is not within the specified range, adjust it to the specified range by increasing or decreasing the thickness of the right and left side differential side gear shaft snap rings equally. Remove the dial indicator and loosen the thinnest side gear shaft snap ring on the ring gear tooth side. HINT: Do not remove SST. Using a plastic-faced hammer, lightly tap the ring tooth side of the differential carrier to stabilize the differential case bearing. Place a dial indicator on the tip of the ring gear tooth at a right angle. Fix the companion flange in place by hand, and measure the ring gear backlash. Standard backlash: 0.08 to 0.13 mm (0.0031 to 0.0051 in.) NOTE: Measure at 3 or more areas around the circumference of the ring gear. If the backlash is small even in one place, replace the ring gear tooth side differential side gear shaft snap ring with a thicker one. HINT: Record the measured value, as it is used to select the differential side gear shaft snap ring. Perform the tooth contact pattern inspection for the differential ring gear and drive pinion. The results will be used as a reference for selecting the differential side gear shaft snap ring. When adjusting the backlash, adjust to within 0.1 mm of the average of the measurements. Remove the 2 bolts and SST from the differential carrier.
ADJUST TOTAL PRELOAD Using SST and a torque wrench, measure the preload with the teeth of the drive pinion and ring gear in contact. SST 09229-55010 Standard total preload (at starting): New bearing: 1.58 to 3.07 N*m (16.1 to 31.3 kgf*cm, 14.0 to 27.2 in.*lbf) Reused bearing: 0.86 to 2.07 N*m (8.8 to 21.1 kgf*cm, 7.6 to 18.3 in.*lbf) If the measured preload is below the standard value, replace the differential side gear shaft snap ring with a thicker one. If the measured preload is above the standard value, replace the differential side gear shaft snap ring with a thinner one. NOTE: If the thickness of the differential side gear shaft snap ring changes 0.02 mm, the total preload will change approximately 0.1 N*m (1.0 kgf*cm). For reassembly purposes, record the measured value. Place a dial indicator on the tip of the ring gear tooth at a right angle. While holding the companion flange, rotate the ring gear and measure the backlash. Standard backlash: 0.08 to 0.13 mm (0.0031 to 0.0051 in.) NOTE: Measure at 3 or more areas around the circumference of the ring gear. If the backlash is not within the specified range, adjust it to the specified range by increasing or decreasing the thickness of the right and left side differential side gear shaft snap rings equally. HINT: When adjusting the backlash, adjust to within 0.1 mm of the average of the measurements. When the side gear shaft snap ring thickness changes by 0.02 mm (0.0008 in.), the backlash will also change by approximately 0.02 mm (0.0008). Record the measured value, as it is used to select the differential side gear shaft snap ring. Perform the tooth contact pattern inspection for the differential ring gear and drive pinion. The results will be used as a reference for selecting the differential side gear shaft snap ring. Recheck the total preload.
INSPECT TOOTH CONTACT BETWEEN RING GEAR AND DRIVE PINION Uniformly apply a light coat of Prussian blue on both sides of 4 teeth on the differential ring gear. Rotate the companion flange several times in the forward and backward rotation directions. Inspect the tooth contact pattern. NOTE: Check the tooth contact pattern at 4 or more positions around the circumference of the ring gear. HINT: The patterns indicated by the Prussian blue are the tooth contact locations. If the teeth are not contacting properly, use the following table to select a proper drive pinion washer for correction. NOTE: Make sure to always replace the drive pinion washer with a new one. Standard washer thickness WASHER THICKNESS SPECIFICATION Thickness mm (in.) No. Thickness mm (in.) No. Thickness mm (in.) No. 1.87 mm (0.0736 in.) 87 2.01 mm (0.0791 in.) 01 2.15 mm (0.0846 in.) 15 1.88 mm (0.0740 in.) 88 2.02 mm (0.0795 in.) 02 2.16 mm (0.0850 in.) 16 1.89 mm (0.0744 in.) 89 2.03 mm (0.0799 in.) 03 2.17 mm (0.0854 in.) 17 1.90 mm (0.0748 in.) 90 2.04 mm (0.0803 in.) 04 2.18 mm (0.0858 in.) 18 1.91 mm (0.0752 in.) 91 2.05 mm (0.0807 in.) 05 2.19 mm (0.0862 in.) 19 1.92 mm (0.0756 in.) 92 2.06 mm (0.0811 in.) 06 2.20 mm (0.0866 in.) 20 1.93 mm (0.0760 in.) 93 2.07 mm (0.0815 in.) 07 2.21 mm (0.0870 in.) 21 1.94 mm (0.0764 in.) 94 2.08 mm (0.0819 in.) 08 2.22 mm (0.0874 in.) 22 1.95 mm (0.0768 in.) 95 2.09 mm (0.0823 in.) 09 2.23 mm (0.0878 in.) 23 1.96 mm (0.0772 in.) 96 2.10 mm (0.0827 in.) 10 2.24 mm (0.0882 in.) 24 1.97 mm (0.0776 in.) 97 2.11 mm (0.0831 in.) 11 2.25 mm (0.0886 in.) 25 1.98 mm (0.0780 in.) 98 2.12 mm (0.0835 in.) 12 2.26 mm (0.0890 in.) 26 1.99 mm (0.0783 in.) 99 2.13 mm (0.0839 in.) 13 2.27 mm (0.0894 in.) 27 2.00 mm (0.0787 in.) 00 2.14 mm (0.0843 in.) 14 2.28 mm (0.0898 in.) 28
REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING Install the 2 bolts and SST to the differential carrier. SST 09571-50010 Tighten SST bolt until SST disc lightly touches the case bearing outer race. Install a dial indicator to the rear differential carrier. Tighten SST bolt and alter the differential carrier's shape to create a 0.1 mm (0.004 in.) clearance between the case bearing outer race and side gear shaft snap ring. NOTE: Observe the dial indicator to ensure that the shape of the differential carrier does not change more than 0.2 mm (0.008 in.). HINT: Try to set the dial indicator as close as possible to the differential carrier cover side (upper side in illustration) of the differential case bearing outer race. The approximate 0.1 mm clearance between the differential case bearing outer race and the differential side gear shaft snap ring only needs to be enough so that the differential side gear shaft snap ring can move slightly. Using snap ring pliers, remove the side gear shaft snap ring on the ring gear tooth side. HINT: Place distinguishing marks on the left and right side differential side gear shaft snap rings to distinguish them (back surface side, tooth side). Then store them separately. Remove the dial indicator and loosen the thinnest side gear shaft snap ring on the ring gear tooth side. HINT: Do not remove SST.
REMOVE REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING Using SST and a hammer, create a clearance between the case bearing outer race on the ring gear and side gear shaft snap ring. SST 09608-32010, 09950-70010 (09951-07200) HINT: The clearance is not visible, but tapping SST with a hammer 3 or 4 times should be enough. Using snap ring pliers, remove the side gear shaft snap ring on the ring gear back surfaces side. HINT: Place distinguishing marks on the left and right side differential side gear shaft snap rings to distinguish them (back surface side, tooth side). Then store them separately.
REMOVE REAR DIFFERENTIAL CASE BEARING Tighten SST bolt and push out the case bearing outer race on the ring gear back surface side. SST 09571-50010 NOTE: Do not drop the case bearing outer race. HINT: For reassembly purposes, mark the installation positions of the differential case bearing outer race and differential side gear shaft snap ring. Place distinguishing marks on the left and right side differential case bearing outer races to distinguish them (back surface side, tooth side). Then store them separately. Remove the 2 bolts and SST from the differential carrier.
REMOVE REAR DIFFERENTIAL CASE BEARING Raise the ring gear side of the differential case slightly and remove the ring gear tooth side case bearing outer race. NOTE: Do not drop the case bearing outer race. HINT: For reassembly purposes, mark the installation positions of the differential case bearing outer race and differential side gear shaft snap ring. Place distinguishing marks on the left and right side differential case bearing outer races to distinguish them (back surface side, tooth side). Then store them separately.
REMOVE REAR DIFFERENTIAL CASE SUB-ASSEMBLY Remove the rear differential case. NOTE: Do not damage the case bearing.
REMOVE REAR DRIVE PINION NUT Using SST, fix the companion flange in place. SST 09330-00021, 09950-30012 (09955-03040) Using SST, remove the drive pinion nut from the differential carrier. SST 09229-55010 HINT: Perform the removal while supporting the overhaul attachment.
REMOVE REAR DRIVE PINION COMPANION FLANGE SUB-ASSEMBLY REAR Using SST, remove the companion flange. SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03040, 09956-03060) NOTE: Before using SST center bolt (09953-03010), apply hypoid gear oil to its threads and tip.
REMOVE REAR DIFFERENTIAL DRIVE PINION OIL SLINGER Remove the differential drive pinion oil slinger from the differential drive pinion.
REMOVE DIFFERENTIAL DRIVE PINION Using a press, press out the drive pinion from the differential carrier. NOTE: Do not drop the drive pinion.
REMOVE REAR DRIVE PINION FRONT TAPERED ROLLER BEARING Remove the rear drive pinion front tapered roller bearing from the differential carrier.
INSTALL REAR DIFFERENTIAL DRIVE PINION BEARING SPACER Install a new drive pinion bearing spacer to the drive pinion. HINT: The bearing spacer can be installed facing either direction.
INSTALL REAR DRIVE PINION FRONT TAPERED ROLLER BEARING Install the rear drive pinion front tapered roller bearing inner race from the differential carrier.
INSTALL DIFFERENTIAL DRIVE PINION Using SST and a press, press in the differential drive pinion to the differential carrier. SST 09316-60011 (09316-00011, 09316-00041), 09608-04031
INSTALL REAR DIFFERENTIAL DRIVE PINION OIL SLINGER Install the differential drive pinion oil slinger to the differential drive pinion.
INSTALL REAR DIFFERENTIAL CARRIER OIL SEAL Using SST and a hammer, tap in a new oil seal. SST 09316-60011 (09316-00011), 09710-04101 NOTE: Tap the oil seal uniformly so that the oil seal is straight. Do not excessively tap the oil seal. Using a vernier caliper, measure the depth of the oil seal. Standard depth: 0 to 0.5 mm (0 to 0.020 in.) NOTE: Measure at 3 or more areas around the circumference of the oil seal. Make sure difference between the maximum and minimum measured values is less than 0.65 mm, as a greater difference may lead to oil leaks. Apply MP grease to the lip of the oil seal.
INSTALL REAR DRIVE PINION COMPANION FLANGE SUB-ASSEMBLY REAR Using SST, install the companion flange to the drive pinion. SST 09950-30012 (09951-03010, 09953-03010, 09954-03010, 09955-03040, 09956-03060) NOTE: Perform this procedure after aligning the companion flange with the spline of the drive pinion. Apply grease to the threads and tip of SST center bolt before use. Coat the threads of a new drive pinion nut with hypoid gear oil LSD. Use SST to hold the flange and torque the drive pinion nut. SST 09950-30012 (09955-03040) Using SST and a torque wrench, tighten the drive pinion nut while checking the starting torque of the drive pinion. SST 09229-55010,09330-00021 Maximum torque: T=490 N*m {5000 kgf*cm} NOTE: Tighten the nut with a force of 100 N*m (1020 kgf*cm) while checking the starting torque of the drive pinion. Do not overtighten the nut, as the threads will become damaged. Apply hypoid gear oil LSD to the threads of the nut and drive pinion. HINT: Perform the removal while supporting the overhaul attachment.
INSTALL REAR DIFFERENTIAL CASE SUB-ASSEMBLY Insert the differential case from the ring gear tooth side. NOTE: Do not damage the case bearing inner race or ring gear.
INSTALL REAR DIFFERENTIAL CASE BEARING Using SST and a hammer, tap in the ring gear tooth side case bearing outer race. SST 09608-32010, 09950-70010 (09951-07200) HINT: Tap in the case bearing outer race until half of the side gear shaft snap ring groove of the differential carrier can be seen. Install the 2 bolts and SST to the differential carrier. SST 09571-50010 Tighten SST bolt until SST disc lightly touches the case bearing outer race. Using SST and a hammer, tap in the ring gear back surface side case bearing outer race. SST 09608-32010, 09950-70010 (09951-07200) HINT: Tap in the case bearing outer race until it touches the case bearing inner race roller bearing.
INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT SNAP RING Using snap ring pliers, install the side gear shaft snap ring in the differential carrier on the ring gear back surface side. NOTE: Check that the differential side gear shaft snap ring is securely fitted into the groove. HINT: Use the side gear shaft snap ring that was used during the tooth contact adjustment. Install a dial indicator on the differential carrier. Tighten SST bolt, and push in the differential case. NOTE: Observe the dial indicator to ensure that the shape of the differential carrier does not change more than 0.2 mm (0.008 in.). HINT: Try to set the dial indicator as close as possible to the differential carrier cover side (upper side in illustration) of the differential case bearing outer race. The approximate 0.1 mm clearance between the differential case bearing outer race and the differential side gear shaft snap ring only needs to be enough so that the differential side gear shaft snap ring can move slightly. Remove the dial indicator and using snap ring pliers, install the side gear shaft snap ring on the ring gear tooth side. HINT: Use the side gear shaft snap ring that was used during the tooth contact adjustment. Loosen the thinnest side gear shaft snap ring on the ring gear tooth side. Tap the differential carrier on the ring gear tooth side using a plastic-faced hammer to stabilize the case bearing. Remove the 2 bolts and SST from the differential carrier.
ADJUST DIFFERENTIAL DRIVE PINION PRELOAD Using SST and a torque wrench, measure the preload. SST 09229-55010 Standard total preload (at starting): New bearing: 1.22 to 1.80 N*m (12.4 to 18.4 kgf*cm, 10.8 to 15.9 in.*lbf) Reused bearing: 0.5 to 0.8 N*m (5.1 to 8.2 kgf*cm, 4.4 to 7.1 in.*lbf) NOTE: For a more accurate measurement, rotate the flange forward and backward several times before the measurement. Check the starting torque of the drive pinion for use with the total preload inspection. The bearing spacer is made of plastic and changes shape when used. If the starting torque of the drive pinion is exceeded by mistake, make sure to replace the bearing spacer with a new one. If the starting torque of the drive pinion is exceeded, replace the bearing spacer. If the starting torque of the drive pinion is insufficient, tighten the drive pinion nut 5 to 10° at a time. Repeat the adjustment as necessary until the starting torque matches the specified torque. Maximum torque: T=490 N*m (5000 kgf*cm) NOTE: If the tightening torque of the pinion nut exceeds the specified torque but the drive pinion starting torque is still insufficient, loosen the pinion nut. Then check if the pinion nut and drive pinion threads are damaged. If there are no problems, replace the bearing spacer, apply hypoid gear oil LSD to its threads and repeat the procedure above.
INSPECT TOTAL PRELOAD Using SST and a torque wrench, measure the total preload. SST 09229-55010 Standard total preload (at starting): New bearing: 1.68 to 3.17 N*m (17.1 to 32.3 kgf*cm, 14.9 to 28.1 in.*lbf) Reused bearing: 0.96 to 2.17 N*m (9.8 to 22.1 kgf*cm, 8.5 to 19.2 in.*lbf)
INSPECT DIFFERENTIAL RING GEAR BACKLASH Place a dial indicator so that it is perpendicular to the top of the ring gear on the tooth side. Fix the companion flange in place, and measure the ring gear backlash. Standard backlash: 0.08 to 0.13 mm (0.0031 to 0.0051 in.) NOTE: Measure at 3 or more areas around the circumference of the ring gear.
INSPECT RUNOUT OF DIFFERENTIAL DRIVE PINION Using a dial indicator, measure the runout of the drive pinion shaft at a position 10 mm (0.39 in.) from the end of the shaft. Maximum runout: 0.08 mm (0.0031 in.)
INSTALL REAR DRIVE PINION NUT Using a chisel and a hammer, stake the drive pinion nut. SST 09930-00010
INSTALL REAR DIFFERENTIAL SIDE GEAR SHAFT OIL SEAL Using SST and a hammer, install 2 new oil seals. SST 09223-15030, 09950-70010 (09951-07150) Standard depth: -0.5 to 0.5 mm (-0.020 to 0.020 in.) NOTE: Tap the oil seal uniformly so that the oil seal is straight. After the installation, check that the oil seal has been tapped securely onto the differential. Apply MP grease to the lips of the oil seal.
INSTALL REAR DIFFERENTIAL DRAIN PLUG HINT: Perform this procedure as necessary. Using a 10 mm socket hexagon wrench, install a new gasket and drain plug to the rear differential carrier. Torque: 49 N*m (500 kgf*cm, 36 ft.*lbf)
INSTALL REAR DIFFERENTIAL FILLER PLUG HINT: Perform this procedure as necessary. Using a 10 mm socket hexagon wrench, install a new gasket and filler plug to the rear differential carrier. Torque: 49 N*m (500 kgf*cm, 36 ft.*lbf)
REMOVE REAR DIFFERENTIAL CARRIER ASSEMBLY Remove the differential carrier from the overhaul attachment.
INSTALL REAR DIFFERENTIAL BREATHER PLUG OIL DEFLECTOR Clean the seal packing attached on the differential carrier and carrier cover using a scraper and wire brush. Then remove the oil with a non-residue solvent or equivalent. NOTE: Do not scratch the fitting surface. Install the rear differential breather plug oil deflector to the rear differential carrier cover with the bolt. Torque: 7.0 N*m (72 kgf*cm, 62 ft.*lbf)
INSTALL REAR DIFFERENTIAL CARRIER COVER Apply seal packing to the differential carrier as shown in the illustration. Seal packing: Toyota Genuine Seal Packing 1281, Three bond 1281 or equivalent NOTE: Apply the seal packing in a continuous line, approximately 2 to 3 mm (0.08 to 0.12 in.) in diameter. Overlap the seal packing at least 10 mm at the beginning and the end of application. Install the differential carrier cover within 3 minutes of application. Install the differential carrier cover with the 8 bolts. Torque: 47 N*m (475 kgf*cm, 35 ft.*lbf) NOTE: Do not fill the oil or drive immediately after installing the differential carrier cover. Leave the vehicle for at least 1 hour. Also, avoid sudden acceleration and deceleration for at least 72 hours after application.
INSTALL REAR DIFFERENTIAL CARRIER COVER BREATHER PLUG Install the breather plug to the carrier cover. Torque: 21 N*m (210 kgf*cm, 15 ft.*lbf)

Scheme 162

Scheme 162: INSTALLATION

INSTALL REAR DIFFERENTIAL CARRIER ASSEMBLY Place the rear differential carrier assembly on a transmission jack. CAUTION: As the rear differential carrier assembly is very heavy, securely support it with the transmission jack. Perform this procedure with several people supporting the rear differential carrier assembly so that it does not tilt or fall. Slowly raise the transmission jack so that the rear differential carrier is at its installation position. NOTE: When installing the rear differential carrier assembly, do not damage the installation surface. Temporarily install the mount stopper upper and lower with 2 new bolts (B). Temporarily install 2 new bolts (A). Temporarily install a new bolt (C). Using SST and a 12 mm socket hexagon wrench, tighten the 2 bolts (A). SST 09249-63010 Torque: without SST 142 N*m (1450 kgf*cm, 105 ft.*lbf) with SST 103 N*m (1054 kgf*cm, 76 ft.*lbf) NOTE: Use a torque wrench with a fulcrum length of 400 mm (16 in.) Tighten the bolts so that they do not interfere with the bolt holes of the mount cushions. Using SST and a 12 mm socket hexagon wrench, tighten the bolt (C). SST 09249-63010 Torque: without SST 142 N*m (1450 kgf*cm, 105 ft.*lbf) with SST 103 N*m (1054 kgf*cm, 76 ft.*lbf) NOTE: Use a torque wrench with a fulcrum length of 400 mm (16 in.) Tighten the bolts so that they do not interfere with the bolt holes of the mount cushions. Tighten the 2 bolts (B). Torque: 127 N*m (1300 kgf*cm, 94 ft.*lbf) NOTE: Make sure that the mount stop upper and lower are not shifted or tilted.
INSTALL REAR DRIVE SHAFT ASSEMBLY RH Install the rear drive shaft assembly (See «INSTALLATION»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) ).
INSTALL PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY Install the rear propeller with center bearing shaft assembly (See «INSTALLATION»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#propeller-shaft) ).

Scheme 163

Scheme 163: COMPONENTS

Scheme 164

Scheme 165

Scheme 166

Scheme 166: REMOVAL

Scheme 167

Scheme 168

Scheme 169

Scheme 170

Scheme 171

Scheme 172

Scheme 173

Scheme 174

REMOVE PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY Remove the rear propeller with center bearing shaft assembly (see «REMOVAL»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#propeller-shaft) ).
REMOVE NO. 2 DIFFERENTIAL SUPPORT PROTECTOR (See «REMOVAL»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) )
REMOVE NO. 1 DIFFERENTIAL SUPPORT PROTECTOR (See «REMOVAL»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) )
REMOVE REAR SUSPENSION MEMBER BRACE LH (See «REMOVAL»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) )
REMOVE REAR SUSPENSION MEMBER BRACE RH (See «REMOVAL»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) )
REMOVE REAR AXLE CARRIER SUB-ASSEMBLY LH Remove the rear propeller with center bearing shaft assembly (see «REMOVAL» ).
REMOVE REAR AXLE CARRIER SUB-ASSEMBLY RH
REMOVE REAR DIFFERENTIAL CARRIER ASSEMBLY WITH DRIVE SHAFT Support the rear differential carrier assembly (with drive shaft) with a transmission jack. CAUTION: As the rear differential carrier assembly (with drive shaft) is very heavy, securely support it with the transmission jack. Perform this procedure with several people supporting the rear differential carrier assembly (with drive shaft) so that it does not tilt or fall. Using SST or a 12 mm socket hexagon wrench, remove the 3 bolts (A) from the rear No. 1 and No. 2 differential mount cushions. SST 09249-63010 Remove the 2 bolts (B). Slowly lower the transmission jack. Then remove the rear differential mount stopper upper and lower, and rear differential carrier assembly from the rear suspension member. NOTE: Do not drop the rear differential carrier assembly (with drive shaft). When removing the rear differential carrier assembly (with drive shaft), do not damage the installation surface.
REMOVE REAR SUSPENSION MEMBER SUB-ASSEMBLY Support the rear suspension member with an engine lift and attachments. CAUTION: As the rear differential carrier assembly (with drive shaft) is very heavy, securely support it with the transmission jack. Perform this procedure with several people supporting the rear differential carrier assembly (with drive shaft) so that it does not tilt or fall. Removing the parking brake actuator harness and release cable. Disconnect the trunk interior's parking brake actuator grommet and connector. Remove the clamps shown in the illustration. Remove the 2 nuts, and the release cable. For Normal Package Remove the 4 bolts. Then remove the 2 rear suspension member stopper lowers, and the 2 differential support member stopper lowers. For Sports Package Remove the 8 bolts. Then remove the rear suspension member stopper lower RH and LH, and the 2 differential support member stopper lowers. Lower the engine lift slowly, and remove the rear suspension member.
REMOVE REAR SUSPENSION MEMBER DAMPER Remove the 3 bolts, and the rear suspension member damper.
REMOVE REAR NO. 1 DIFFERENTIAL MOUNT CUSHION Pass SST bolts through the area shown in the illustration, and remove the mount cushion No. 1. SST 09316-12010, 09570-24011 NOTE: When removing the mount cushion No. 1, do not allow the rear suspension member to contact SST (09316-12010). Before using SST bolts, apply hypoid gear oil to their threads. Be sure to combine SST properly. Do not install SST bolts at an angle. Make sure SST bolts are tightened equally.
REMOVE REAR NO. 2 DIFFERENTIAL MOUNT CUSHION Pass SST bolt through the area shown in the illustration, and remove the mount cushion No. 2. SST 09316-12010,09570-24011 NOTE: When removing the mount cushion No. 2, do not allow the rear suspension member to contact SST (09316-12010). Before using SST bolt, apply hypoid gear oil to its threads. Be sure to combine SST properly. Do not install SST bolts at an angle.

Scheme 175

Scheme 175: INSTALLATION

Scheme 176

Scheme 177

Scheme 178

Scheme 179

INSTALL REAR NO. 1 DIFFERENTIAL MOUNT CUSHION Pass SST bolts through the area shown in the illustration, and install the mount cushion No. 1. SST 09570-24011 NOTE: Make sure the mount cushion installation angle misalignment is not over +-3 Make sure the mount cushion is not at an angle by first temporarily installing the mount cushion to the member before installing SST. Before using SST bolts, apply hypoid gear oil to their threads. Be sure to combine SST properly. Confirm that SST contacts the entire seat surface of the mount cushion. Do not install SST bolts at an angle. Make sure SST bolts are tightened equally.
INSTALL REAR NO. 2 DIFFERENTIAL MOUNT CUSHION Pass SST bolt through the area shown in the illustration, and install the mount cushion No. 2. SST 09570-24011 NOTE: Make sure the mount cushion installation angle misalignment is not over +-3. Make sure the mount cushion is not at an angle by first temporarily installing the mount cushion to the member before installing SST. Before using SST bolt, apply hypoid gear oil to their threads. Be sure to combine SST properly. Confirm that SST contacts the entire seat surface of the mount cushion. Do not install SST bolts at an angle.
REMOVE REAR SUSPENSION MEMBER DAMPER Install the rear suspension member damper with the 3 bolts. Torque: 25 N*m (255 kgf*cm, 18 ft.*lbf)
INSTALL REAR SUSPENSION MEMBER SUB-ASSEMBLY Support the rear suspension member with an engine lift and attachments. CAUTION: As the rear suspension member is very heavy, securely support it with an engine lifter with attachments. Perform this procedure with several people supporting the rear suspension member so that it does not tilt or fall. Slowly raise the engine lift so that the rear suspension member is at its installation position. For Normal Package Install the 2 rear suspension member stopper lowers, and the 2 differential support member stopper lowers with the 4 bolts. Torque: 127 N*m (1300 kgf*cm, 94 ft.*lbf) For Sports Package Install the 2 rear suspension member stopper lower LH and RH, and the 2 differential support member stopper lowers with the 8 bolts. Torque: A 127 N*m (1300 kgf*cm, 94 ft.*lbf) B 19 N*m (195 kgf*cm, 14 ft.*lbf) Connecting the harness and cable of the parking brake unit. Connect the cable with the 2 nuts. Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf) Connect the clamps shown in the illustration. Connect the trunk interior's parking brake actuator grommet and connector.
INSTALL REAR DIFFERENTIAL CARRIER ASSEMBLY WITH DRIVE SHAFT Place the rear differential carrier assembly (with drive shaft) on a transmission jack. CAUTION: As the rear differential carrier assembly (with drive shaft) is very heavy, securely support it with the transmission jack. Perform this procedure with several people supporting the rear differential carrier assembly (with drive shaft) so that it does not tilt or fall. Slowly raise the transmission jack so that the rear differential carrier (with drive shaft) is at its installation position. NOTE: When installing the rear differential carrier assembly (with drive shaft), do not damage the installation surface. Temporarily install the mount stopper upper and lower with 2 new bolts (B). Temporarily install 2 new bolts (A). Temporarily install a new bolt (C). Using SST and a 12 mm socket hexagon wrench, tighten the 2 bolts (A). SST 09249-63010 Torque: without SST 142 N*m (1450 kgf*cm, 105 ft.*lbf) with SST 103 N*m (1054 kgf*cm, 76 ft.*lbf) NOTE: Use a torque wrench with a fulcrum length of 400 mm (16 in.) Tighten the bolts so that they do not interfere with the bolt holes of the mount cushions. Using SST and a 12 mm socket hexagon wrench, tighten the bolt (C). SST 09249-63010 Torque: without SST 142 N*m (1450 kgf*cm, 105 ft.*lbf) with SST 103 N*m (1054 kgf*cm, 76 ft.*lbf) NOTE: Use a torque wrench with a fulcrum length of 400 mm (16 in.) Tighten the bolts so that they do not interfere with the bolt holes of the mount cushions. Tighten the 2 bolts (B). Torque: 127 N*m (1300 kgf*cm, 94 ft.*lbf) NOTE: Make sure that the mount stop upper and lower are not shifted or tilted.
INSTALL REAR AXLE ASSEMBLY LH (See «INSTALLATION» )
INSTALL REAR AXLE ASSEMBLY RH (See «INSTALLATION»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) )
INSTALL REAR SUSPENSION MEMBER BRACE LH (See «INSTALLATION»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) )
INSTALL REAR SUSPENSION MEMBER BRACE RH (See «INSTALLATION»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) )
INSTALL NO. 1 DIFFERENTIAL SUPPORT PROTECTOR (See «INSTALLATION»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) )
INSTALL NO. 2 DIFFERENTIAL SUPPORT PROTECTOR (See «INSTALLATION»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#drive-shaft) )
INSTALL PROPELLER WITH CENTER BEARING SHAFT ASSEMBLY Install the propeller with center bearing shaft assembly (see «INSTALLATION»(/lexus/ls/iv-2006-2012/remont/driveshaft-universal-joints/#propeller-shaft) ).

Differential: Diagnosis Lexus LS IV