GMC 1989 Light Duty Truck Repair Manual page 248

4C1-8 1/2-INCH RING GEAR
8
Dial in d ic a to r and a rb o r p o s itio n e d on th e gage b lo c k .
A.
M e a su re m e n t a fte r th e a rb o r is m oved o ff o f th e gage b lo c k
B.
J 22761 Differential Side Bearing Installer
• Lubricate all parts with rear axle lubricant.
1. Axle seals.
2. Side gear thrust washers (19) to the side gears (22).
3. Side gears (22) to the differential case (24).
• Place the side gears in place on the same side
as removed.
4. Pinion gears (21) to the differential without the thrust
washers (20).
• Place the pinion gears onto the side gears so
that the holes in the pinion gears are 180
degrees apart.
• Rotate the pinion gears into place, and verify
that the pinion gears line up with the pinion
shaft holes.
5. Pinion thrust washers (20).
Figure 14— Installing th e Pinion Oil Seal
Figure 13— Checking Pinion Depth
6. Ring gear (7) to the differential case (24).
• Rotate the pinion gears toward the differential
opening just enough to slide in the pinion
thrust washers.
• C h e c k th a t the m a tin g s u rfa c e s of the
differential case and the ring gear are clean
and burr free.
• Thread two left-hand threaded studs into the
ring gear on opposite sides (figure 17).
• Place the ring gear onto the case, and align
the holes in the case with the studs.
Figure 15 — Installing the Pinion Flange
F-04682