Differential Carrier Assembly Assemble 9.25 Inch Axle

Special Tools

1. Install the selective shim between the inner pinion bearing and the shoulder of the pinion gear.



2. Install the inner pinion bearing onto the pinion gear using the J 35512 .
3. Install the new collapsible spacer onto the pinion gear.
4. Lubricate the inner and the outer pinion bearings with axle lubricant. Use the proper fluid. Refer to Fluid and Lubricant Recommendations.
5. Install the outer pinion bearing into the differential carrier case half.



6. Install the oil seal by doing the following:

6.1.	Install the differential carrier case half into a vise.

Place shop towels in the vise in order to protect the differential carrier case.

6.2.	Install the seal using the J 36366 . Ensure the seal flange is seated on the axle housing surface.

7. Apply sealant to the splines of the pinion yoke. Use the correct sealant. Refer to Adhesives, Fluids, Lubricants, and Sealers.
8. Install the pinion gear, with the inner pinion bearing and the new collapsible spacer, into the left differential carrier case half.
9. Install the pinion yoke.

Caution: Refer to Pinion Flange/Yoke Installation Caution in the Preface section.

10. Seat the pinion yoke onto the pinion shaft by tapping it with a soft-faced hammer until a few pinion shaft threads show through the yoke.
11. Install the washer and a new pinion nut.

If the new pinion nut cannot be installed, perform the following steps in order to seat the pinion yoke onto the pinion so that the washer and new pinion nut can be installed:

11.1.

Remove the pinion nut washer.

11.2.

Install the old pinion nut.

11.3.

Tighten the nut until a few of the shaft threads show through the nut so that the washer and new pinion nut can be installed.

11.4.

Remove the old pinon nut.

11.5.

Install the pinion nut washer.

11.6.

Install the new pinion nut.




12. Install the J 8614-01 onto the pinion yoke as shown.

Caution: Refer to Fastener Caution in the Preface section.

Note: If the rotating torque is exceeded, the pinion will have to be removed and a new collapsible spacer installed.

13. Tighten the pinion nut while holding the J 8614-01 .

Tighten
Tighten the pinion nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut in order to seat the bearings.

14. Remove the J 8614-01 .
15. Measure the rotating torque of the pinion using an inch-pound torque wrench.

Specification
The rotating torque of the pinion should be 1.0-2.3 N·m (10-20 lb in) for used bearings, or 1.7-3.4 N·m (15-30 lb in) for new bearings.

16. If the rotating torque measurement is below 1.0 N·m (10 lb in) for used bearings, or 1.7 N·m (15 lb in) for new bearings, reinstall the J 8614-01 and continue to tighten the pinion nut.

Specification
The rotating torque of the pinion should be 1.0-2.3 N·m (10-20 lb in) for used bearings, or 1.7-3.4 N·m (15-30 lb in) for new bearings.

17. Once the specified torque is obtained, rotate the pinion several times to ensure the bearings have seated.

Recheck the rotating torque and adjust if necessary.

18. Remove the J 8614-01 .
19. Assemble the right side differential adjuster nut into the differential nut sleeve until fully seated.



20. Install the right side axle shaft bearings into the differential adjuster nut sleeve using the J 36612  (2) and the J 8092  (1).
21. Install the left side axle shaft bearing into the differential adjuster nut sleeve using the J 36609 and the J 8092 .
22. Install the right side differential adjuster nut assembly and new adjuster lock nut tab into the differential carrier case using the J 36609 and the J 8092 .
23. Install the left side differential adjuster nut assembly into the differential carrier case.



24. Install the right side differential case side bearing cups to the differential carrier case using the J 36603 (2) and the J 8092 (1).



25. Install the differential case assembly into the left differential carrier case half.
26. Clean the sealing surface of each half of the differential carrier case and the inner axle housing to differential carrier assembly.

The surfaces must be clean of all the grease and the oil.

27. Apply a bead of sealer to one differential carrier case half sealing surface. Use the correct sealer. Refer to Adhesives, Fluids, Lubricants, and Sealers.



28. Install the right differential carrier case half to the left differential carrier case half.

If the carrier case halves do not make complete contact, use the J 36599-A in order to back out the right differential adjuster nut sleeve until the differential carrier case halves make contact.




29. Install the differential carrier case bolts.

Tighten
Tighten the differential carrier case bolts to 47 N·m (35 lb ft).

30. Install the differential carrier assembly into a vise.



31. While rotating the pinion yoke back and forth, turn the right side differential adjuster nut sleeve clockwise using the J 36599-A until 0.0254-0.0762 mm (0.001-0.003 in) of backlash can be felt between the ring gear and the drive pinion.

If the backlash specification cannot be obtained, turn the left side differential adjuster nut sleeve counterclockwise using the J 36599-A one notch at a time until the backlash specification can be obtained.




32. Turn the left side differential adjuster nut clockwise using the J 36615 in order to preload the differential side bearings against the differential side bearing cups.

Tighten
Tighten the differential adjuster nut to 75 N·m (55 lb ft).

33. Rotate the pinion several times in order to seat the pinion and differential side bearings.
34. Measure the rotating torque of the drive pinion and differential assembly using an inch-pound torque wrench.

Specification
The rotating torque of the pinion and differential assembly should be 3.4-6.2 N·m (30-55 lb in) for new bearings or 2.8-5.1 N·m (25-45 lb in) for used bearings.




35. If the rotating torque measurement is below 2.8 N·m (25 lb in) for used bearings, or 3.4 N·m (30 lb in) for new bearings, adjust the differential side bearing preload using the following steps:

35.1.

Place an alignment mark between the differential adjuster nut sleeve and the differential carrier case, left and right sides.

35.2.

Using the J 36599-A or the J 36615 , turn the left and the right side differential adjuster nut sleeves in or clockwise one notch.

35.3.

Measure the rotating torque of the pinion and differential assembly using an inch-pound torque wrench.

35.4.

Compare the new measurement to the specification listed in step 34. If the rotating torque of the pinion and differential assembly is not within specifications, continue to tighten the left and right side differential adjuster nut sleeves one notch at a time on each side until the rotating torque of the pinion and differential assembly is within specifications.

36. If the rotating torque measurement is above 5.1 N·m (45 lb in) for used bearings, or 6.2 N·m (55 lb in) for new bearings, adjust the differential side bearing preload using the following steps:

36.1.

Place an alignment mark between the differential adjuster nut sleeve and the differential carrier case, left and right sides.

36.2.

Using the J 36599-A or the J 36615 , turn the left and the right side differential adjuster nut sleeves out or counterclockwise one notch.

36.3.

Measure the rotating torque of the pinion and differential assembly using an inch-pound torque wrench.

36.4.

Compare the new measurement to the specification listed in step 34. If the rotating torque of the pinion and differential assembly is not within specifications, continue to loosen the left and right side differential adjuster nut sleeves one notch at a time on each side until the rotating torque of the pinion and differential assembly is within specifications.

37. Once the specified rotating torque is obtained, rotate the pinion several times to ensure the bearings have seated.

Recheck the rotating torque and adjust if necessary.

38. Measure the drive pinion to ring gear backlash and adjust, if necessary. Refer to Backlash Inspection and Adjustment.
39. Once the bearing preload and drive pinion to ring gear backlash is within specifications, perform a gear tooth contact pattern check to ensure proper contact between the pinion and the ring gear. Refer to Gear Tooth Contact Pattern Inspection.
40. Complete the assembly of the differential carrier. Refer to Differential Carrier Assembly Final Assembly.

Differential Carrier Assembly Assemble 8.25 Inch Axle Lock Ring Style

Special Tools

1. Install the selective shim between the inner pinion bearing and the shoulder of the pinion gear.



2. Using the J 35512 , install the inner pinion bearing onto the pinion gear.
3. Install the new collapsible spacer onto the pinion gear.
4. Lubricate the inner and the outer pinion bearings with axle lubricant. Use the proper fluid. Refer to Fluid and Lubricant Recommendations.
5. Install the outer pinion bearing into the differential carrier case half.



6. Install the oil seal by doing the following:

6.1.	Install the differential carrier case half into a vise. Place a shop towel in a vise in order to protect the differential case.

6.2.	Using the J 36366 , install the seal. Ensure that the seal flange is seated on the axle housing surface

7. Apply sealant to the splines of the pinion yoke. Use the correct sealant. Refer to Adhesives, Fluids, Lubricants, and Sealers.
8. Install the pinion gear, with the inner pinion bearing an the new collapsible spacer, into the left differential carrier case half.
9. Install the pinion yoke.

Caution: Refer to Pinion Flange/Yoke Installation Caution in the Preface section.

10. Seat the pinion yoke onto the pinion shaft by tapping it with a soft-faced hammer until a few pinion shaft by threads show through the yoke.
11. Install the new pinion nut and the new washer. If the pinion nut cannot be installed, perform the following steps in order to seat the pinion yoke onto the pinion so that the washer and new pinion nut can be installed:

11.1.

Remove the pinion nut washer.

11.2.

Install the old pinion nut.

11.3.

Tighten the nut until a few of the shaft threads show through the nut so that the washer and new pinion nut can be in stalled.

11.4.

Remove the old pinion nut.

11.5.

Install the pinion nut washer.

11.6.

Install the new pinion nut.

12. Install the J 8614-01 onto the pinion yoke as shown.

Caution: Refer to Fastener Caution in the Preface section.

Note: If the rotating torque exceeded, the pinion will be removed and a new collapsible spacer installed.

13. Tighten the pinion nut while holding the J 8614-01 .

Tighten
Tighten the pinion nut until the pinion end play is just taken up. Rotate the pinion while tightening the nut in order to seat the bearings.

14. Remove the J 8614-01 .
15. Using an inch pound torque wrench, measure the rotating torque of the pinion.

Specification
The rotating torque of the pinion should be 1.0-2.3 N·m (10-20 lb in) for used bearings, 1.7-3.4 N·m (15-30 lb in) for new bearings.

16. If the rotating torque measurement is below 1.0 N·m (10 lb in) for used bearings, or 1.7 N·m (15 lb in) for new bearings, reinstall the J 8614-01 and continue to tighten the pinion nut.

Specification
The rotating torque of the pinion should be 1.0-2.3 N·m (10-20 lb in) for used bearings, 1.7-3.4 N·m (15-30 lb in) for new bearings.

17. Once the specified torque is obtained, rotate the pinion several time to ensure the bearings have seated. Recheck the rotating torque and adjust if necessary.
18. Remove the J 8614-01 .
19. Assemble the differential adjuster nut into the differential adjuster nut sleeve until it is fully seated.



20. Using the J 36614  (2) and the J 8092  (1), install the inner shaft bearing inner shaft bearing onto the differential bearing adjuster for the 8.25 inch S4WD axle left and right side, 8.25 inch F4WD axle left.



21. Using the J 36614  (2) and the J 8092  (1), install the left and right side differential adjuster nut assembly into the differential carrier case.



22. Using the J 8092  (1) , install the left and right differential case side bearing cups into the differential carrier case.



23. Install the differential case assembly into the left differential carrier case half.




Note:  The sealing surfaces of the differential carrier halves must be free of grease and oil to ensure that the gasket will seal properly.

24. Install the differential carrier case gasket (3).
25. Install the differential carrier case (2) half to the left differential carrier case half. If the carrier case halves do not make complete contact, use the J 36599-A in order to back out right differential adjuster nut sleeve until the differential carrier case halves make contact.
26. Install the differential carrier case bolts (1).

Tighten
Tighten the differential carrier case bolts to 73 N·m (54 lb ft).

27. Install the differential carrier assembly into a vise.
28. While rotating the pinion yoke back and forth, turn he right side differential adjuster nut sleeve clockwise using the J 36599-A until 0.0254-0.072 mm (0.001-0.003 inch) of backlash can be felt between the ring gear and the drive pinion. If the backlash specification cannot be obtained, turn the left side differential adjuster nut sleeve counter clockwise using the J 36599-A one notch at a time until the backlash specification can be obtained.



29. Using the J 36599-A turn the left side differential adjuster nut sleeve clockwise in order to preload the differential side bearings against the differential side bearings cups.

Tighten
Tighten the differential adjuster nut to 75 N·m (55 lb ft).

30. Rotate the pinion several times in order to seat the pinion and differential side bearings.
31. Measure the rotating torque of the drive pinion and differential assembly using an inch-pound torque wrench.

Specification
The rotating torque of the pinion and differential assembly should be 0.57-1.13 N·m (5-10 lb in) greater than the rotating torque of the drive pinion measured earlier.

32. If the rotating torque of the drive pinion and differential assembly is not 0.57-1.13 N·m (5-10 lb in) greater than the rotating torque of the drive pinion, adjust the differential side bearing preload using the following steps:

32.1.

Place an alignment mark between the differential adjuster nut sleeve and the differential carrier case, left and right sides.

32.2.

Using the J 36599-A , turn the left and right side differential adjuster sleeves in or clockwise one notch.

32.3.

Using an inch pound torque wrench, measure the rotating torque of the pinion and differential assembly.

32.4.

Compare the new measurement to the specification listed in Step 31. If the rotating torque of the pinion and differential assembly is not within specifications, continue to tighten the left and right side differential adjuster nut sleeves one notch on each side until the rotating torque of the pinion and differential assembly is within specifications.

33. If the rotating torque of the drive pinion and differential assembly is more than 1.13 N·m (10 lb in) above the rotating torque of the drive pinion measurement , adjust the differential side bearing preload using the following steps:

33.1.

Place an alignment mark between the differential adjuster nut sleeve and the differential carrier case, left and right sides.

33.2.

Using the J 36599-A or the J 36615 , turn the left and right side differential adjuster nut sleeve out or clockwise one notch.

33.3.

Using a torque wrench, measure the rotating torque of the pinion and differential assembly.

33.4.

Compare the new measurement to the specification listed in Step 31. If the rotating torque of the pinion and differential assembly is not within specifications, continue to loosen the left and right side differential adjuster nut sleeve one notch at a time on each side until the rotating torque of the pinion and differential assembly is within specifications.

34. Once the specified rotating is obtained, rotate the pinion several times to ensure the bearings have seated. Recheck the rotating torque and adjust if necessary.
35. Measure the drive pinion to the ring gear backlash and adjust, if necessary. Refer to Backlash Inspection and Adjustment.
36. Once the bearing preload and drive pinion to the ring gear backlash is within specifications, perform a gear tooth contact pattern check to ensure proper contact between the pinon and the ring gear. Refer to Gear Tooth Contact Pattern Inspection.
37. Complete the final assembly of the differential carrier. Refer to Differential Carrier Assembly Final Assembly.