Differential Side Bearings Assemble
Differential Side Bearings AssembleTools Required
^ J42155 Differential Lifting Tool
^ J421681 Differential Centerline Cylinder
^ J421682 Shim Gage Assembly
^ J421687 Depth Gage
^ J421689 Holding Strap
^ J4216811 Pinion Housing Centering Spacer
^ J4216813 Gage Plate Assembly
^ J4216815 Side Bearing Shim Selector
^ J4216816 Spacers
^ J42170 Bearing and Race Installer
^ J42173 Differential Holding Fixture
1. Remove the J421689 and thumbscrew from the J421681.
2. Remove the J421681 from the left bearing race bore of the differential housing.
Important: Level the tool in order to obtain accurate measurements.
3. Install the J42168 13 into a vice.
4. Position the bearing race (2) onto the J4216813 (3).
5. Position the differential case (1) onto the J4216813 (3) and into the bearing race (2). Rotate the differential, in both directions, in order to seat the bearing to the race.
6. Install the J421687 (2) into the hole in J421682 (1). Loosen the thumbscrew and allow the rod to contact the bottom of the bearing race bore, machined surface (3).
7. Tighten the thumbscrew.
8. Remove the J421687from the J421682.
9. Install the J421687 (2) into one of the two oil passages of the differential (1). The tapered portion of the tool will wedge and be retained into the differential.
10. Rotate the differential until the rod of J421687is above the J4216813 (3) gage block.
11. The,J4216813 upper gage block location (1) is used when servicing 2.73 ratio differentials.
The lower gage block location (2) is used when servicing the 3.15 and 3.42 ratio differentials.
12. Using a feeler gage, measure the distance between the rod of J421687and the gage block of J4216813. Record the measurement as dimension C1.
13. Subtract C1 value from a C nominal value of 5 mm (0.197 inch). Record that calculation as C2.
Refer to the applicable calculation table in Spacer and Shim Specifications.
14. Locate the A2 value (2) on the side of the ring gear.
Important: The A2 value is a manufacturing variation between the ring gear and pinion. The A2 value may be higher, lower, or equal to 65.5 mm (2.58 inch), 3.15 and 3.42 ratio differentials, or 74.5 mm (2.93 inch), 2.73 ratio differential, nominal value. When subtracting the D nominal value from the A2 value, the C3 calculation may compute to a positive, negative, or zero total.
15. Subtract the D nominal value of either 65.5 mm (2.58 inch) or 74.5 mm (2.93 inch) from the A2 value. Record the calculation as C3.
16. Add the C2 value to the C3 value for the proper left side differential bearing shim thickness.
The C3 value may be a positive, negative, or zero value.
17. Select shims equal to the calculated value. It may be necessary to round the shim or shims total to obtain the proper shim sizes. If the shim thickness calculation is past the midpoint value, round the number to the next decimal value. Refer to Rear Axle Specifications.
18. Remove the pinion housing/cage bolts (1).
19. Remove the pinion housing/cage (1) from the differential.
20. Remove the J4216811, bearings (3 and 6), spacer (5), and J421682 (7) from the pinion housing/cage (4).
21. Use the J42170 and a hydraulic press in order to install the selected shims (1) and bearing race (2) to tide differential housing.
22. Use the J42155 in order to install the differential case into the differential housing.
23. Install the right side bearing race (2), and the J4216815 (1) onto the differential.
Important: In order to perform the shim selection procedure:
^ The oil seal must be removed from the cover-right.
^ The pinion housing/cage must NOT be installed to the differential case.
24. Install the cover right (2) and J4216816 bolts and spacers to the differential. Position the J4216816 bolts and spacers evenly apart.
Tighten the bolts to 25 Nm (18 ft. lbs.).
25. Insert a feeler gage into the J4216815 and measure the gap. The measured dimension is the right side differential bearing shim size.
26. Remove the bolts (1), cover (2), and tools.
27. Install the selected shim (2) and bearing race (1) to the cover right.
28. Install the shim or shims and bearing race into the cover right using the J42170 and a hydraulic press. Refer to Rear Axle Assemble.