Final Drive Housing

FINAL DRIVE HOUSING
1. Press-fit front and rear bearing outer races with Tools.

Tool number:
A - ST30611000 (J25742-1)
B - ST30621000 (J25742-5)
C - ST30613000 (J25742-3)






2. Select drive pinion height adjusting washer and pinion bearing adjusting washer. Refer to Adjustment, Pinion Gear Height and Pinion Bearing Preload.
Adjustment

3. Install drive pinion height adjusting washer in drive pinion, and press-fit pinion rear bearing inner cone in it, using press and Tool.

Tool number: ST30901000 (J26010-01)






4. Place pinion front bearing inner cone in final drive housing.






5. Apply multi-purpose grease to cavity at sealing lips of oil seal. Install front oil seal.

Tool number: KV38100500 (J25273)






6. Place drive pinion bearing spacer, drive pinion bearing adjusting washer and drive pinion in final drive housing.






7. Insert companion flange into drive pinion by tapping the companion flange with a soft hammer.






8. Tighten pinion nut to the specified torque.
The threaded portion of drive pinion and pinion nut should be free from oil or grease.

Tool number: KV38108300 (J-44195)





9. Turn drive pinion in both directions several revolutions, and measure pinion bearing preload.

Tool number: ST3127S000 (J25765-A)

Pinion bearing preload:................1.1 - 1.4 Nm (11 - 14 kg.cm, 9.5 - 12.2 inch lbs.)

When pinion bearing preload is outside the specifications, replace pinion bearing adjusting washer and spacer with a different thickness.






10. Select side bearing adjusting washer. Refer to Adjustments, Side Bearing Preload.
Adjustment

11. Install differential case assembly with side bearing outer races into final drive housing.






12. Insert left and right side bearing adjusting washers in place between side bearings and final drive housing.






13. Drive in side bearing spacer with Tool.

Tool number: KV38100600 (J25267)






14. Align mark on bearing cap with that on final drive housing and install bearing cap on final drive housing.






15. Apply multi-purpose grease to cavity at sealing lips of oil seal. Install side oil seal.

Tool number: KV38100200 (J26233)






16. Measure ring gear to drive pinion backlash with a dial indicator.

Ring gear-to-drive pinion backlash:....................0.10 - 0.15 mm (0.0039 - 0.0059 inch)

If backlash is too small, decrease thickness of right shim and increase thickness of left shim by the same amount. If backlash is too great, reverse the above procedure.

Never change the total amount of shims as it will change the bearing preload.






17. Check total preload with Tool.
When checking preload, turn drive pinion in both directions several times to set bearing rollers.

Tool number: ST3127S000 (J25765-A)

Total preload:.....................1.4 - 1.7 Nm (14 - 17 kg.cm, 12 - 15 inch lbs.)






If preload is too great, remove the same amount of shim from each side.
If preload is too small, add the same amount of shim to each side.

Never add or remove a different number of shims for each side as it will change ring gear to drive pinion backlash.

18. Recheck ring gear to drive pinion backlash because increase or decrease in thickness of shims will cause change of ring gear-to-pinion backlash.






19. Check runout of ring gear with a dial indicator.

Runout limit:.....................0.05 mm (0.0020 inch)

If backlash varies excessively in different places, the variance may have resulted from foreign matter caught between the ring gear and the differential case.
If the backlash varies greatly when the runout of the ring gear is within a specified range, the hypoid gear set or differential case should be replaced.

20. Check tooth contact. Refer to Adjustment, Tooth Contact.
Adjustment

21. Install rear cover and gasket.






22. Install differential side shaft assembly.