Chevrolet 1988 Light Duty Truck Repair Manual page 241

Figure 11— Removing the Thrust Sleeve
• There are three adjustm ents to be made:
(1) Left side gear backlash.
(2) Right side gear backlash.
(3) Thrust block clearance.
Right Side Gear Blacklash Adjustm ent
1. Install the cam unit and thrust washer (36) to the
right case half.
2. Clamp the cam unit in place using a set of washers,
nut, and a bolt long enough to hold the cam unit in
place (figure 13).
3. Place the pinion gears and thrust washers on the
pinion yoke.
4. Install the yoke firm ly to the differential case half
(figure 14).
5. Loosen the nut, and index one pinion gear tooth to
point downward (perpindicular to the case half face).
Tighten the nut.
6. M ount a dial indicator on the case half face using a
m agnetic base (figure 15).
7. Place the stem of the dial indicator on the pinion
gear tooth.
Figure 12— Cam Unit Com ponents
LOCKING DIFFERENTIALS 4B7-7
Figure 13— Clamping the Cam Unit In Place