Mazda CX 7. Manual - part 187

DIFFERENTIAL 

03-14–9

03-14

Ring Gear Disassembly Note

1. Secure the gear case in a vice and remove the 

bolts.

2. Lightly tap around the ring gear using a plastic 

hammer to remove the ring gear from the gear 
case.

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.

1. Remove the side bearing inner races from the 

gear case using the SST and a press.

End Of Sie

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49 0839 425C

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DIFFERENTIAL 

03-14–10

REAR DIFFERENTIAL ASSEMBLY

id031400800600

Warning

• The 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.

1. Assemble in the order indicated in the table.

.

SST

SST

SST

SST

SST

SST

SST

9

8

3

3

1

2

2

10

10

19

14

13

11

21

12

20

20

R

SST

R

R

R

SST

R

R

R

SEALANT

SEALANT

OIL

OIL

R

7

5

4

4

6

18

17

15

16

25

24

23

23

22

26

26

240—755 
{24.5—76.9, 177—556}

12.7—17.3 
{1.3—1.7, 
9.4—12.7}

68.6—83.3 
{9.0—8.49, 
50.6—61.4}

15.7—22.6 
{1.6—2.3, 
11.6—16.6}

38—51 
{3.9—6.2, 
28.1—37.6}

38—51 
{3.9—6.2, 
28.1—37.6}

N·m {kgf·m,  ft·lbf}

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1

Gear case

2

Side bearing inner race
(See 03-14-11 Side Bearing Inner Race Assembly 
Note)

3

Thrust washer
(See 03-14-11 Thrust washer Assembly Note)

4

Side gear

5

Pinion gear

6

Pinion shaft

7

Knock pin

8

Ring gear
(See 03-14-12 Ring Gear Assembly Note)

9

Differential carrier

10

Bearing outer race
(See 03-14-12 Bearing Outer Race Assembly Note)

11

Spacer
(See 03-14-13 Spacer, Bearing Inner Race 
Assembly Note)

12

Bearing inner race (rear bearing)
(See 03-14-13 Spacer, Bearing Inner Race 
Assembly Note)

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DIFFERENTIAL 

03-14–11

03-14

Side Bearing Inner Race Assembly Note

Caution

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

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

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.

Standard backlash

0.1 mm {0.004 in} or less

Thrust washer thickness

13

Bearing inner race (front bearing)
(See 03-14-13 Spacer, Bearing Inner Race 
Assembly Note)

14

Collapsible spacer

15

Drive pinion

16

Locknut
(See 03-14-15 Locknut Assembly Note)

17

Washer

18

Adjusting shim (L)
(See 03-14-15 Adjusting Shim Assembly Note)

19

Spacer

20

Side bearing outer race

21

Rear differential component

22

Adjusting shim (R)

23

Bearing cap
(See 03-14-17 Bearing Cap Assembly Note)

24

Rear cover
(See 03-14-18 Rear Cover Assembly Note)

25

Differential oil temperature sensor

26

Oil seal
(See 03-14-18 Oil Seal Assembly Note)

49 F401 331

49 G030 338

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Identification mark

Thickness

0

2.0 mm {0.079 in}

1

2.1 mm {0.083 in}

2

2.2 mm {0.086 in}

05

2.05 mm {0.081 in}

15

2.15 mm {0.084 in}

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DIFFERENTIAL 

03-14–12

Ring Gear Assembly Note

Caution

• The 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.

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}

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

A

B

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49 M005 797

49 F027 007

49 F027 004

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