Pinion Depth Adjustment

Pinion Depth Adjustment

Tools Required
^ J25070 Heat Gun
^ J42168-9 Holding Strap
^ J45013-2 Gage Assembly
^ J45013-3 Gage Cylinder
^ J45013-5 Gage Centering Assembly
^ J45013-7 Adapter Screw
^ J45019 Flange and Pinion Cage Remover





1. Install pinion tail bearing then the pinion bearing spacer on the J45013-5 (1).
2. Install the head bearing on J45013-2 (2).
3. Install them into the pinion bearing cage (3) as shown.
4. Snug the J45013-7. This will apply the proper bearing preload determined by the custom ground spacer that is provided with the bearing kit.





5. Install the J45013-3 (1) into the differential carrier as shown.
6. Turn the carrier over and attach the holding strap J42168-9 and thumb screw (2). Snug the thumb screw.





7. Inspect the pinion cage surfaces. Ensure that there are no nicks or burrs on the pinion cage surfaces or in the carrier bore.

Important: When installing the pinion bearing housing into the carrier, ensure that the gage rod (2) does not hit the ribbing inside the carrier.






8. Using 2 long bolts from J45019 as guides, align the bolt holes of the pinion cage and the carrier. Snug the bolts.
9. Apply a light coat of gear lube to the carrier bore and pinion cage in order to ease assembly.
10. Heat the carrier using J25070 in order to ease pinion cage assembly.





11. While aligning the guide bolts and bolt holes, push the pinion cage into the bore of the carrier.





12. Install the pinion cage bolts and tighten in a criss-cross pattern.

Notice: Refer to Fastener Notice in Service Precautions.

Tighten the pinion cage bolts to 29 Nm (21 ft. lbs.).





13. Measure the distance between the hex rod on the J45013-2 (1) and the post on the J45013-3 (2). Record this measurement.
14. Subtract this measurement from 5 mm (0.196 inch). This is the amount of pinion shim size value B2.
15. Remove J45013-3 from the carrier.