Drive Axles Land Rover Discovery L318

AXLE RATIO & IDENTIFICATION

AXLE RATIO SPECIFICATION

General

The front axle consists of an axle housing with a differential assembly attached to the right of the vehicle center line. A wheel hub is installed in a steering knuckle at each end of the axle housing and connected to the differential assembly by a axle shaft. (Scheme 1)and (Scheme 2).

Scheme 1

Scheme 2

Axle Housing

The axle housing is of welded construction, with brackets on the housing exterior for attachment to the front suspension. Yokes at each end of the housing incorporate upper and lower ball joints for attachment of the steering knuckles. A differential cover on the front of the axle housing contains an oil level plug for checking and replenishment of the differential lubricating oil. A magnetic drain plug is installed on the underside of the housing. An oil seal is installed in each end of the axle housing to prevent leakage past the axle shafts. The interior of the axle housing is ventilated through a breather tube inserted in a Red plastic sleeve in the top of the housing. The open end of the breather tube is located in the left rear corner of the engine compartment.

Differential Assembly

The differential assembly is of the spiral bevel type, lubricated by splash oil. The assembly consists of a differential carrier attached to a pinion housing. In the pinion housing, the pinion is splined to a drive flange which is secured with a bolt and washer. An oil seal prevents leakage past the drive flange.

Axle Shaft

Each axle shaft consists of a solid rod, splined at both ends, with a constant velocity joint installed on the outboard end. (Scheme 2) A shield is incorporated onto each rod to protect the oil seals in the axle housing. The constant velocity joint is of the ball and socket type. A shaft on the constant velocity joint is splined to the hub flange. The constant velocity joint is pre-packed with grease and protected by a gaiter. There are 2 securing bands used to retain the gaiter in position.

Steering Knuckle

The steering knuckles are mounted on upper and lower ball joints in yokes at the end of the axle housing. A tension collet, in the lower mounting point of each steering knuckle, accommodates manufacturing tolerances to enable the correct tightening of both ball joints. Lugs are incorporated on the steering knuckles for attachment of the steering system drag link and track rod.

Wheel Hub

Each wheel hub consists of a hub flange pressed into a hub bearing. The hub flange is splined to accept the constant velocity joint of the axle shaft, which is secured to the hub flange with a stake nut. (Scheme 2) There are 5 studs installed in the hub flange for the wheel nuts and a threaded hole is provided for the brake disc securing screw. The outer race of the hub bearing is bolted to the steering knuckle. The hub bearing is a sealed unit which contains twin opposed roller bearings, pre-packed with grease during manufacture. A toothed ABS sensor ring is integrated into the inner race of the hub bearing. An opening in the outer race of the hub bearing accommodates the ABS sensor.

The rear axle consists of an axle housing with a differential assembly attached to the right of the vehicle center line. A wheel hub is installed in each end of the axle housing and connected to the differential assembly by a axle shaft. (Scheme 3)and (Scheme 4).

Scheme 3

Scheme 4

The axle housing is of welded construction, with brackets on the housing exterior for attachment to the rear suspension. A differential cover on the rear of the axle housing contains an oil level plug for checking and replenishment of the differential assembly lubricating oil. A magnetic drain plug is installed on the underside of the axle housing. The interior of the axle housing is ventilated through a breather tube inserted in a Red plastic sleeve in the top of the housing. The open end of the breather tube is located between the chassis and the left rear wheel arch.

The differential assembly is of the spiral bevel type, lubricated by splash oil. The assembly consists of a differential carrier attached to a pinion housing. In the pinion housing, the pinion is splined to a pinion flange which is secured with a bolt and washer. An oil seal prevents leakage past the pinion flange.

Centralizing Peg

The centralizing peg is a press-fit in the center of the pinion flange and provides a positive location for the rear drive shaft to ensure it is centralized with the flange.

Each wheel hub consists of a hub flange pressed into a hub bearing. The hub flange is splined to accept the outboard end of the axle shaft (or drive shaft), which is secured to the hub flange with a stake nut. (Scheme 4) There are 5 studs installed in the hub flange for the wheel nuts, and a threaded hole is provided for the brake disc securing screw. The outer race of the hub bearing is bolted to the end of the axle housing. An "O" ring seals the joint between the outer race and the axle housing to prevent leakage of differential lubricating oil. The hub bearing is a sealed unit which contains twin opposed roller bearings, pre-packed with grease during manufacture. A toothed ABS sensor ring is integrated into the inner race of the hub bearing. An opening in the outer race of the hub bearing accommodates the ABS sensor.

Each axle shaft consists of a solid rod, splined at both ends.

CAPACITY

Manufacturer recommends that fluid be changed at 6 months or 7500 miles and again at 72 months or 90,000 miles. Manufacturer recommends that fluid be checked at 24 months or 30,000 miles, 48 months or 60,000 miles and at 96 months or 120,000 miles. Fluid should be level with bottom of oil filler hole in differential housing. Refill capacity on a dry differential is 3.6 Pts. (1.7L).

FLUID TYPE

Manufacturer recommends using API GL5 MTI fully synthetic 75W/90R, Castrol Syntrax 75W/90R or Texaco Multigear 75W/90R.

OIL DRAIN & REFILL PROCEDURE

1. Place a suitable container under differential housing of axle to be drained. Clean area around oil filler/level and drain plugs. (Scheme 5) Remove oil filler/level plug. Remove and discard "O" ring from oil filler/level plug.
2. Remove oil drain plug and allow oil to drain. Install drain plug and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
3. Fill differential housing with recommended oil to bottom of oil filler/level plug hole. See «FLUID TYPE»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__fluid-type). Lubricate a NEW "O" ring with recommended oil and install to oil filler/level plug. Install oil filler/level plug and tighten to specification. Remove all traces of oil from differential housing.

Scheme 5

TROUBLE SHOOTING

Note. See TROUBLE SHOOTING - BASIC PROCEDURES article in GENERAL INFORMATION.

Removal

1. Raise and support front of vehicle. Remove front road wheels. Drain oil from differential. See «OIL DRAIN & REFILL PROCEDURE»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__oil-drain-refill-procedure) under LUBRICATION.
2. If components are to be reinstalled, put a reference mark on drive shaft and mating components. (Scheme 6) Remove 4 nuts and bolts securing drive shaft to differential pinion flange. Release drive shaft and tie aside.
3. Remove 2 bolts securing brake caliper to steering knuckle. Release caliper and tie aside clear of brake disc. DO NOT allow caliper to hang on brake hose. Remove screw securing disc to hub flange. Remove brake disc from hub flange. Repeat for other side.
4. Disconnect each ABS sensor connector. Release each harness from brake hose and hose bracket. (Scheme 7) Remove 4 bolts securing each front wheel hub to front axle housing. (Scheme 8)
5. Release wheel hubs from front axle. Remove wheel hubs and axle shafts from front axle. Remove oil seal from axle case. (Scheme 9) Remove 10 bolts securing differential to axle housing. Release and remove differential from axle housing.

Scheme 6

Scheme 7

Scheme 8

Scheme 9

Installation

1. Clean axle shaft oil seal recess, oil seal running surface, wheel hub and axle mating faces. Using a suitable solvent, remove all traces of sealant from differential and axle mating faces. (Scheme 1)
2. Apply sealant STC 3811 to differential or axle mating face. Apply sealant STC 50552 to threads of differential securing bolts. Install differential to axle housing. Install bolts and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
3. Position drive shaft and align reference marks. Install bolts and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications). Lubricate oil seal lip and running surface with clean differential oil. Using Seal Installer LRT-54-012 and Drift LRT-99-003, install NEW axle shaft oil seal to axle housing. (Scheme 10)
4. Apply anti-seize compound to wheel hub and steering knuckle mating faces. Ensure ABS harnesses are located in cut out in steering knuckles. Install axle shaft in axle housing and align wheel hubs with steering knuckles. Install wheel hub bolts and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
5. Connect each ABS sensor connector and secure harness to harness bracket and brake hose. (Scheme 7) Clean mating faces of drive flange and brake disc. Install brake disc to drive flange, install screw and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
6. Clean mating faces of caliper and hub. Install caliper and tighten bolts to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications). Install road wheels and tighten nuts to specification. Lower vehicle. Fill differential with oil. See «OIL DRAIN & REFILL PROCEDURE»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__oil-drain-refill-procedure) under LUBRICATION.

Scheme 10

1. Raise and support rear of vehicle. Remove rear road wheels. Drain oil from differential. See «OIL DRAIN & REFILL PROCEDURE»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__oil-drain-refill-procedure) under LUBRICATION.
2. If components are to be reinstalled, put a reference mark on drive shaft and mating components. (Scheme 11)
3. Remove 3 nuts and bolts securing flexible coupling to pinion flange. Release drive shaft and tie aside. Using Centralizing Peg Remover LRT-51-008, extract centralizing peg from pinion flange. (Scheme 12) Separate centralizing peg from the tool. Remove rear axle shafts. See «REAR AXLE SHAFT»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles). Remove 10 bolts securing differential to axle housing. Release and remove differential from axle housing.

Scheme 11

Scheme 12

1. Clean axle shafts, wheel hubs and wheel hub locations in rear axle housing. Using a suitable solvent, remove all traces of sealant from differential and axle mating faces. (Scheme 3)
2. Apply sealant STC 3811 to differential or axle mating face. Apply sealant, Part No. STC 50552 to threads of differential securing bolts. Install differential to axle housing. Install bolts and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
3. Clean pinion flange and centralizing peg. Using a tubular drift, install centralizing peg to pinion flange. Ensure that the large diameter part of the centralizing peg is below pinion flange mounting surface.
4. Position drive shaft and align reference marks. Install nuts and bolts securing flexible coupling to pinion flange and tighten to specification.
5. Lubricate 2 NEW wheel hub "O" rings with clean differential oil and install "O" rings on wheel hubs. Install left and right axle shafts and wheel hubs to rear axle housing. Install wheel hub bolts and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
6. Connect each ABS sensor connector and secure harness to harness bracket and brake hose. Install left and right rear brake discs. Install road wheels and tighten nuts to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications). Lower vehicle. Fill differential with oil. See «OIL DRAIN & REFILL PROCEDURE»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__oil-drain-refill-procedure) under LUBRICATION.

AXLE HOUSING ASSEMBLY

Note. It is not necessary to remove axle housing to service differential assemblies, axle shaft assemblies and/or wheel hub assemblies.

FRONT AXLE SHAFT & CONSTANT VELOCITY JOINT ASSEMBLY

Note. For front axle shaft and constant velocity joint assembly removal and installation, see AXLE SHAFTS - FRONT article.

FRONT HUB ASSEMBLY

Note. Front hub bearing and hub flange are replaced as an assembly. See AXLE SHAFTS - FRONT article.

1. Raise and support rear of vehicle. Remove road wheel. Release stake in axle shaft nut. With an assistant depressing brake pedal, remove and discard axle shaft nut.
2. Remove rear brake discs. Disconnect ABS sensor connector. Release ABS sensor harness from brake hose and hose bracket. (Scheme 13) Remove 4 bolts securing rear wheel hub to rear axle.
3. Release and remove wheel hub and axle shaft from axle housing. Remove and discard "O" ring from wheel hub. (Scheme 14)
4. Position wheel hub and axle shaft on a press, place supports under wheel studs and press axle shaft from wheel hub. (Scheme 15)

Scheme 13

Scheme 14

Scheme 15

1. Clean axle shaft splines, wheel hub and axle mating faces, ABS sensor and sensor recess. Install axle shaft to axle housing. Lubricate new bearing hub "O" ring with clean differential oil. Install "O" ring to wheel hub. Apply a 0.125" (3 mm) wide bead of sealant No. STC 50554 around axle shaft circumference as illustrated. (Scheme 16)
2. Install wheel hub to axle shaft and align to axle. Sealant will smear along the length of splines as wheel hub is installed to axle shaft. Install bolts securing wheel hub to axle and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications). Install NEW axle shaft nut and lightly tighten.
3. Install rear brake disc. With an assistant depressing brake pedal, tighten axle shaft nut to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications). Stake axle shaft nut. Connect ABS sensor connector and secure harness to harness bracket and brake hose. Install road wheel and tighten nuts to specification. Lower vehicle.

Scheme 16

1. Raise and support vehicle. Reference mark front drive shaft for reassembly. Remove 4 nuts and bolts securing drive shaft to differential. Release drive shaft and tie aside.
2. Using Spanner Wrench LRT-51-003 to restrain pinion flange, remove bolt and washer securing pinion flange. (Scheme 17) Remove pinion flange.
3. Position container to catch oil spillage. Using a suitable lever, remove pinion oil seal. (Scheme 18) Take care to avoid damage to oil seal recess.

1. Clean pinion oil seal recess and pinion flange. Lubricate pinion oil seal lip with clean differential oil. Using Seal Installer LRT-51-010, install pinion oil seal. (Scheme 19) Install pinion flange and securing bolt and washer.
2. Using Spanner Wrench LRT-51-003, restrain pinion flange and tighten pinion flange bolt to specification. (Scheme 17) See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
3. Position drive shaft and align reference marks. Install nuts and bolts and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
4. Lower vehicle. Check differential oil level. See «OIL DRAIN & REFILL PROCEDURE»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__oil-drain-refill-procedure) under LUBRICATION.

1. Raise and support vehicle. Reference mark rear drive shaft for reassembly. Remove 3 nuts and bolts securing flexible coupling to pinion flange. Tie drive shaft aside.
2. Using Centralizing Peg Remover LRT-51-008, extract the centralizing peg from the pinion flange. Remove the centralizing peg from the tool. (Scheme 12)
3. Using Spanner Wrench LRT-51-003 to restrain pinion flange, remove bolt and washer securing pinion flange. (Scheme 17) Remove pinion flange.
4. Position container to catch oil spillage. Using a suitable lever, remove pinion oil seal. Take care to avoid damage to oil seal recess.

Scheme 17

Scheme 18

Scheme 19

1. Clean pinion oil seal recess and pinion flange. Lubricate oil seal lip with clean differential oil. Using Seal Installer LRT-51-010, install pinion oil seal. (Scheme 19)
2. Install pinion flange and securing bolt and washer. Using Spanner Wrench LRT-51-003 to restrain pinion flange, tighten pinion flange securing bolt to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
3. Using a tubular drift, install centralizing peg to pinion flange. Ensure that large diameter part of centralizing peg is below pinion flange mounting surface.
4. Position drive shaft and align reference marks. Install nuts and bolts securing flexible coupling to pinion flange and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
5. Lower vehicle. Check differential oil level. See «OIL DRAIN & REFILL PROCEDURE»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__oil-drain-refill-procedure) under LUBRICATION.

Disassembly

1. Remove differential assembly. See «DIFFERENTIAL ASSEMBLY - FRONT»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles) and «DIFFERENTIAL ASSEMBLY - REAR»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles). Secure differential assembly in a vice or stand.
2. Remove roll pins securing adjusting nuts. (Scheme 20) Using Holding Tool LRT-51-018-5, loosen differential adjusting nuts. Reference mark bearing caps to aid assembly.
3. Remove bolts securing bearing caps and remove caps. (Scheme 21) Remove crown wheel assembly and collect bearing outer races. (Scheme 22)
4. Mark position of outer races-to-bearings to aid assembly. Using Spanner Wrench LRT-51-003, restrain pinion flange and remove bolt and washer. (Scheme 23)
5. Remove pinion flange and extra spacer (if installed). (Scheme 24) Using a lever, remove pinion oil seal. DO NOT damage oil seal recess.
6. Carefully tap pinion from bearings and collect tail bearing. Remove pinion tail bearing shim and record shim size. (Scheme 25)
7. Using a bearing puller, remove pinion head bearing. (Scheme 26) Remove pinion bearing races. (Scheme 27) Remove pinion head bearing shim and record shim size.
8. Using a 2-legged puller and Puller Adapter LRT-51-018-6, remove differential bearings. (Scheme 28)
9. Secure differential crown wheel assembly in a vice. Remove and discard 10 bolts securing crown wheel to carrier. (Scheme 29) Carefully remove the crown wheel from the carrier.
10. Remove and discard roll pin securing carrier cross shaft and remove cross shaft. (Scheme 30) Rotate gears to open part of carrier and remove planet gears and sun gears. (Scheme 31)

Scheme 20

Scheme 21

Scheme 22

Scheme 23

Scheme 24

Scheme 25

Scheme 26

Scheme 27

Scheme 28

Scheme 29

Scheme 30

Scheme 31

Cleaning & Inspection

Thoroughly clean all components. Check all bearings and bearing races for wear and pitting. Check all gears for wear, scuffing, pitting and damaged teeth. Replace defective parts as necessary. Ring and pinion gears are matched sets. Pinion housing and bearing caps are also matched sets.

Assembly & Adjustments

1. Install planet gears and rotate to align cross shaft holes. Install cross shaft, ensure roll pin hole is aligned. Secure cross shaft with NEW roll pin. Install crown wheel to carrier. (Scheme 29) Install NEW crown wheel bolts and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
2. Ensure original head bearing shim is clean and free from burrs. Install under bearing race. (Scheme 27) Ensure pinion bearing cup recesses are clean and free of burrs.
3. Using Bearing Race Installer LRT-51-018-4, install pinion head and tail bearing races. (Scheme 32) Install pinion head bearing to pinion. Lubricate bearings with thin oil.
4. Ensure original tail bearing shim is clean and free from burrs and install under bearing race. Install pinion and pinion tail bearings. Install pinion flange, washer and bolt.
5. Using Spanner Wrench LRT-51-003 to restrain pinion flange. (Scheme 23) Tighten pinion flange bolt to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications). Ensure pinion flange end float is zero.
6. Using an Inch-Pounds torque wrench, rotate pinion several times to settle bearings. (Scheme 33) During pinion rotation, check and record pinion Torque-To-Turn. Pinion Torque-To-Turn should be 36-54 INCH lbs. (4-6 N.m). Adjust size of tail bearing shim to obtain correct pinion Torque-To-Turn. A shim thickness change of 0.001" (0.025 mm) will change pinion Torque-To-Turn approximately 8.8 INCH lbs. (1.0 N.m).
7. Position adapter LRT-51-018-7 on surface plate, establish zero and reference Dial Test Indicator (DTI). Ensure pinion height setting block, setting gauge and mating faces are clean and free from burrs. Locate Setting Block LRT-51-018-11 over pinion head and ensure it is fully seated in position. (Scheme 34)and (Scheme 35).
8. Pinion height setting procedure: "A" Nominal pinion height setting is 2.929" (74.390 mm). "B" Setting block height (found on side of setting block). "C" Head height setting. "A" - "B" = "C" Subtract nominal pinion height "A" from setting block height "B" (found on side of setting block). Example 2.929" - 2.879" = 0.0496" (74.390 - 73.130 = 1.26 mm). Therefore pinion head height reading would be 0.048-0.050" (1.235-1.285 mm). Align Setting Gauge LRT-51-018-7 to setting block, rock gauge to obtain minimum reading. (Scheme 36) If reading is lower than required reading, decrease shim size. If reading is higher than required reading, increase shim size.
9. Using Spanner Wrench LRT-51-003 to restrain pinion flange, remove bolt and washer. Remove pinion flange. Remove pinion, collect tail bearing and tail bearing shim. Remove pinion head bearing outer race and shim. Discard shim.
10. Ensure bearing race recess is clean and free from burrs. Install calculated shim, and using LRT-51-018-4 install head bearing outer race. (Scheme 32) Install pinion, pinion tail bearing and tail bearing shim.
11. Install pinion flange and bolt and washer. Using Spanner Wrench LRT-51-003 to restrain pinion flange, tighten bolt to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
12. Rotate pinion in both directions to settle bearings. Recheck pinion Torque-To-Turn, adjust if necessary. Recheck pinion head height. Using Spanner Wrench LRT-51-003 to restrain pinion flange, remove bolt and washer. Remove pinion flange. Discard bolt.
13. Using Seal Installer LRT-51-010 install pinion seal. (Scheme 37) Ensure spacer and tail bearing are correctly located. Install pinion seal, pinion flange and washer. Install NEW pinion flange bolt and tighten to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
14. Lightly oil differential bearings. Ensure roll pins are installed in bearing caps. Install differential bearing outer races and locate differential assembly into housing. Install bearing caps and tighten bolts to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications).
15. Install adjusting nuts and tighten crown wheel side nut to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications). Ensure opposing nut is loose. Position DTI to check crown wheel backlash. Adjust opposing nut to obtain correct crown wheel backlash.
16. Rotate pinion in both directions to settle bearings. Measure in 3 places to obtain correct crown wheel backlash. (Scheme 38)
17. Align adjusting nuts to next roll pin slot. DO NOT loosen nuts to align slots. Tighten bearing cap bolts to specification. See «TORQUE SPECIFICATIONS»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles__torque-specifications). Secure adjusting nuts with NEW roll pins.
18. Apply Prussian Blue to crown wheel teeth to check tooth contact. (Scheme 39) Rotate pinion several times to obtain full tooth contact. "A" Normal pattern, drive pattern should be centered on gear teeth. Coast pattern should be centered on gear teeth but may be towards the toe. There should be some clearance between the pattern and the top of gear teeth. "B" Backlash correct, thinner pinion shim required. "C" Backlash correct, thicker pinion shim required. "D" Pinion shim correct, decrease backlash. "E" Pinion shim correct, increase backlash. Install differential assembly. See «DIFFERENTIAL ASSEMBLY - FRONT»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles) and «DIFFERENTIAL ASSEMBLY - REAR»(/land-rover/discovery/l318-2002-2004/remont/differentials-drive-axles/#drive-axles).

Scheme 32

Scheme 33

Scheme 34

Scheme 35

Scheme 36

Scheme 37

Scheme 38

Scheme 39

TORQUE SPECIFICATIONS

TORQUE SPECIFICATIONS

See also:
• TROUBLE SHOOTING - BASIC PROCEDURES
• AXLE SHAFTS - FRONT
• TORQUE SPECIFICATIONS
• FLUID TYPE
• OIL DRAIN & REFILL PROCEDURE
• REAR AXLE SHAFT