Differential — inspection and overhaul

1. Remove differential (Chapter 5) and clamp it securely in a vise using wood blocks to protect the surface from damage.

2. Remove the bolts and remove the driven gear from the differential housing. The driven gear can be attached to the casing with rivets, in which case it cannot be removed.

3. Remove the spring pin of the satellite axis by knocking it out from the opposite side of the casing.

4. Remove the pinion axle, gears and thrust washers.

5. Remove the bearing inner race. using a press and a suitable puller.

6. Remove the second bearing with a puller.

7. Remove the speedometer drive mechanism.

8. Inspect gears, friction and contact surfaces for wear, cracks and damage.

9. Inspect the bevel gear and pinion assembly. Inspection is performed without removing the drive shafts from the differential assembly. Support the drive shafts and measure the play of both planet gears by manually moving them to the free play distance. If the backlash exceeds the regulated value (see specs), obtain a thrust washer of the correct thickness from your dealer and install it between the differential case and the differential bevel gears.


10. Thoroughly wash each part in solvent before installation.

11. During installation, apply clean gear oil to all friction surfaces and replace with new all the spring pins removed during the bulkhead.

12. Install the speedometer drive mechanism.

13. Install the side bearings using the special tool and hydraulic press, or have this operation done by your dealer.

14. Install pinion gears and differential bevel gears using appropriate thrust washers.

15. Install the pinion shaft so that the hole for the spring pin is aligned with the hole in the casing.

16. Install the spring pin with a hammer and punch, working from the side of the speedometer drive gear.

17. Install the differential driven gear and tighten the bolts (if applied).

18. Install the differential assembly into the transmission.