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Differential: Overhaul Mazda CX-9 I

Differentials & Drive Axles 8 illustrations ~486 words

Side Bearing Inner Race Disassembly Note

Note. Mark or otherwise distinguish between the left and right side bearings so that they are not mixed up at the time of reassembly.

Scheme 45

Scheme 45: Side Bearing Inner Race Disassembly Note
Scheme 45: Side Bearing Inner Race Disassembly Note
  1. Remove the side bearing inner races from the gear case using the SST and a press.
WARNINGThe engine stand is equipped with a self-lock mechanism, however, if the rear differential is in a tilted condition, the self-lock mechanism could become inoperative. If the rear differential unexpectedly rotates it could cause injury, therefore do not maintain the rear differential in a tilted condition. When turning the rear differential, grasp the rotation handle firmly.

Note. Clean away the old sealant before applying the new sealant. Install the rear cover within 10 minutes after applying sealant. Allow the sealant to set at least 30 minutes after installation before filling the differential with the specified oil.

Scheme 46

Scheme 46
Scheme 46
  1. Assemble in the order indicated in the table.

Side Bearing Inner Race Assembly Note

CAUTIONDo not mix up the left and right side bearing inner races.

Scheme 47

Scheme 47
Scheme 47
  1. Press the side bearing inner races into the gear case using the SSTs. Substitution SST 49 G030 338 Outer diameter: 43-45 mm {1.70-1.77 in} Inner diameter: 41 mm {1.61 in} or more Inner depth: 3 mm {0.12 in} or more

Scheme 48

Scheme 48: Thrust Washer Assembly Note
Scheme 48: Thrust Washer Assembly Note
  1. Assemble the side gears, thrust washers and pinion gears to the gear case, then assemble the knock pin.
  2. After assembling the knock pin, make a crimp so that the pin will not come out of the gear case.
  3. Set a dial gauge to the pinion gear as indicated in the figure.
  4. Secure one of the side gears.
  5. Move the pinion gear and measure the backlash at the end of the pinion gear. If the backlash exceeds the standard, use the thrust washers to adjust. Rear differential backlash of pinion gear and side gear 0.1 mm {0.004 in} or less

Thrust washer thickness

Identification markThickness
02.0 mm {0.079 in}
12.1 mm {0.083 in}
22.2 mm {0.086 in}
052.05 mm {0.081 in}
152.15 mm {0.084 in}

THRUST WASHER THICKNESS SPECIFICATION

Ring Gear Assembly Note

CAUTIONThe differential gear and ring gear could be damaged if the ring gear is installed with old thread-locking compound remaining on the bolt threads. Before installing the ring gear, completely remove the old thread-locking compound from the bolt threads.

Scheme 49

Scheme 49
Scheme 49

Scheme 50

Scheme 50
Scheme 50
  1. Apply a small amount of thread-locking compound to each of points A on the back of the ring gear, and bolt thread areas B (around the entire ring). Application amount Back of ring gear: Approx. 0.4 ml {0.4 cc, 0.02 cu in} Ring gear bolt thread points: Approx. 0.4 ml {0.4 cc, 0.02 cu in} (0.04 ml {0.04 cc, 0.002 cu in} to each point)
  2. Align the marks placed on the ring gear case at the time of disassembly and tighten the bolts in diagonal order. Tightening torque 68.6-83.3 N.m {7.00-8.49 kgf.m, 50.6-61.4 ft.lbf}

Scheme 51

Scheme 51: Bearing Outer Race Assembly Note
Scheme 51: Bearing Outer Race Assembly Note
  1. Press in the bearing outer race using the SSTs and a press. Substitution SST 49 F027 007 Outer diameter: 70.8-71.0 mm {2.78-2.79 in} Plate thickness: 1 mm {0.04 in} or more 49 F027 004 Outer diameter: 78.5-79.0 mm {3.10-3.11 in} Plate thickness: 1 mm {0.04 in} or more

Rear Cover Assembly Note

CAUTIONClean away the old sealant before applying the new sealant. Install the rear differential within 10 minutes after applying sealant. Allow the sealant to set at least 30 minutes after installation before filling the differential with the specified oil.
  1. Clean the alignment surface of the carrier and rear cover, and apply a thin coat of sealant.
  2. Install the rear cover. Tightening torque 15.7-22.6 N.m {1.6-2.3 kgf.m, 11.6-16.6 ft.lbf}

Scheme 52

Scheme 52: Oil Seal Assembly Note
Scheme 52: Oil Seal Assembly Note
  1. Apply differential oil to the new oil seal lip.
  2. Assemble the oil seal using the SSTs. Substitution SST 49 G030 796 Outer diameter: 56-60 mm {2.21-2.36 in} Inner diameter: 49.8 mm {1.96 in} or more Inner depth: 8.7 mm {0.34 in} or more

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