Chevrolet 1977 10 Series, Repair Manual, Page: 79 / 468

REAR AXLE DIFFERENTIAL
4B-7
EXAMPLE
RING GEAR SIDE
OPPOSITE SIDE
.250”
Thickness o f Tool J-22779
required to force ring
gear in to contact w ith
pinion
Combined to ta l o f:
Service Spacer (A )
Service Shim (B )
Feeler Gauge (C )
.265”
- .010”
.2 4 0 "
TO M A IN T A IN PROPER B AC K LAS H (.0 0 5 ” - .008” ), ring gear is
moved away fro m pinion by subtracting .0 1 0 ” shims fro m ring gear
side and adding .010” shims to other side
+ .010”
.275”
+ .004”
TO O B T A IN PROPER PRELOAD
to each side.
on side bearings, add .004” shims
+ .004”
.244”
Shim dimension required
fo r ring gear side
Shim dimension required
fo r opposite side
.279”
Fig. 4B-8--Side Bearing Shim Requirements 8 -1 /2 " and 8 -3 /4 "