Chevrolet 1988 Light Duty Truck Repair Manual page 147

A. Dial in d ic a to r and arbor p o sitio n e d on the gage block.
B. M easurem ent a fte r the arbor is moved o ff o f the gage block.
Production shims are cast iron and are not to be
reused. Measure the production shim s and spacers
one at a time, and add the m easurem ents together
to obtain the sizes of the left and right shim packs.
S ervice spacers are 4.32 to 4.37 mm (0.170 to
0.172-inch) thick.
Service shims are available from 1.02 mm to 2.54
mm (0.040 to 0.100-inch) in increm ents of 0.101 mm
(0.004-inch).
Be sure that the side bearing surfaces are clean and
free of burrs.
Figure 11— Ring Gear Studs
7 AND 7 /8-INCH RING GEAR AXLES 4B1-7
1/2 5
Figure 10— Checking Pinion Depth
1. Place the case with the bearing cups installed into
the axle housing (figure 1).
2. Insert the service spacer between the bearing cup
and the axle housing. Place the cham fered edge
against the housing.
3. Install the left bearing cap and bearing cap bolts. Do
not tighten the bolts.
4. Select one or two shim s totaling the am ount needed
as shown in figure 13.
• L u b r ic a te th e a x le b e a rin g s w ith
lubricant.
Figure 12— Side Bearing Installation
F-04682
a x le