Vari-LOK Plenum

REMOVAL
1. Remove differential case from axle housing.

Fig. 32:

2. Remove the bearing from the ring gear side of the differential case with Puller/Press C-293-PA, Adapter Blocks 8352, and Plug SP-3289.
3. Remove the Vari-LOK plenum from the differential case hub.

WARNING: Do not touch the Vari-LOK tuning reed valve located under the Vari-LOK plenum on the differential case. The metal is very sensitive and the unit will not operate properly it the reed valve is disturbed.

INSTALLATION
If a replacement differential side bearing is being installed, differential side bearing shim requirements may change. Refer to the Differential Bearing Preload and Gear Backlash procedures to determine the proper shim selection.
1. Install a new Vari-LOK plenum onto the differential case hub. The plenum is to be installed with the rubber seal toward the differential case and the raised metal tabs away from the differential case.
2. Install differential side bearing shims onto differential case hub.

CAUTION: Be sure that the Vari-LOK plenum is fully seated against the differential case prior to installing the ring gear side differential bearing.

Fig. 33:

3. Using Installer C-3716-A and Handle C-4171, install differential side bearing.
4. Install differential in axle housing.