GMC 1976 ZEO 6083 Maintenance Manual page 181

3C- 1 8 FINAL DRIVE
RING GEAR
Installation
Figure 48-Installing Right Side Bearing
1 . Place side gear thrust washers over side gear
hubs and install side gears in case . If same parts are
reused, install in original sides.
NOTE : Position side gear with threaded retainer
on left side of case .
2 . Position one pinion (without shims) between
side gears and rotate gears until pinion is directly
opposite from loading opening in case . Place other
pinion between side gears so that pinion shaft holes
are in line ; then rotate gears to make sure holes in
pinions will line up with holes in case .
3. If holes line up, rotate pinions back toward
loading opening just enough to permit sliding in pin-
ion gear shims.
4. Install pinion shaft. Drive pinion shaft retain-
ing lock pin into position . (figure 49)
1 . After making certain that mating surfaces of
case and ring gear are clean and free of burrs, install
three 7/16-20 x 1-3/4 in . bolts as shown in Figure 50
to correctly position ring gear .
2. Install Tool J-22822 into a vise and place case
assembly over tool as shown in Figure 51 . Install
NEW ring gear attaching bolts in remaining holes
and then remove three 7/16-20 x 1-3/4 in . bolts.
Install remaining three NEW bolts into ring gear and
torque bolts alternately in progressive stages to 85 ft .
lbs.
NOTE :
Tool J-22822 must be used to correctly
torque ring gear bolts.
Figure 49-Installing Lock Pin
Figure 50-Installing Ring Gear to Case