Envoy 4WD V6-4.3L VIN W (1998)
Carrier Bearings: Adjustments
ADJUSTMENT PROCEDURE
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Tools Required
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J 22779 Side Bearing Backlash Gauge
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Before installing the drive pinion, make a differential side bearing preload adjustment.
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In order to maintain the original backlash, adjust the differential case side bearing preload by changing the thickness of the left and the right shims
equally.
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Measure the production shims and the spacers one at a time. Add the measurements together in order to obtain the sizes of the right and the left
shim packs. Production shims are cast iron. Do not reuse production shims.
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Service spacer thickness is nominal at 4.32 mm (0.170 inch).
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Service shims are available from 1.02-2.54 mm (0.040-0.100 inch) in increments of 0.101 mm (0.004 inch).
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The side bearing surfaces must be clean and free of burrs.
1. Place the case, with the bearing cups installed, into the axle housing.
1.1. Lubricate the axle bearings with axle lubricant.
1.2. Support the case in order to keep the case from failing into the axle housing.
2. Insert J 22779 between the axle housing and the left bearing cup.
3. Turn the adjusting nut to the right until you produce a noticeable drag, while moving the tool back and forth in the bore.
3.1. Tighten the lock bolt on the side of the tool.
3.2. Leave the tool in place.
4. Install a service spacer and a shim between the right bearing cup and the axle housing.
Insertion of progressively larger feeler gauge sizes between the axle housing and the service shim determines the bearing preload.
4.1. Push the feeler gauge downward so that the feeler gauge contacts the shim at the top and the bottom, and then contacts the axle housing.
4.2. The correct feeler gauge thickness is the point just before additional drag begins. This is the zero setting without the preload.
5. Remove the following from the vehicle:
5.1. The strap
5.2. J 22779
5.3. The service spacer
5.4. The service shim
