GMC 1982 Light Duty Truck Service Manual page 437

R IN G G E A R S ID E
Thickness of Tool J-22779
required
.250"
gear into
pinion
TO M A IN TA IN PROPER BACKLASH (.005" - .008" ), ring gear is
- .010"
moved away from pinion by subtracting .010" shims from ring gear
.240"
side and adding .010" shims to other side
TO OBTAIN PROPER PRELOAD
+ .004"
to each side.
Shim dimension required
.244"
fo r ring gear side
Fig. 4Bl-22--Determining Side Bearing Shim Requirements
E X A M P L E
to force ring
contact with
on side bearings, add .004" shims
O PPO SITE SID E
Combined total of:
Service Spacer (A )
Service Shim (B )
Feeler Gauge (C )
Shim dimension required
for opposite side
REAR AXLE 4 B 1-9
.265"
+ .010"
.275"
+ .004"
.279"