GMC 1990 Light Truck Repair Manual page 246

4C1-8 1/2-INCH RING GEAR
8
Dial indicator and arbor positioned on the gage block.
A.
Measurement after the arbor is moved o ff of the gage block.
B.
J 22761 Differential Side Bearing Installer
Lubricate all parts with rear axle lubricant.
Axle seals.
Side gear thrust washers (19) to the side gears (22).
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
20
washers ( ).
• 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.
Pinion thrust washers (20).
5.
Figure 14—Installing the Pinion Oil Seal
Figure 13—Checking Pinion Depth
6
. Ring gear (7) to the differential case (24).
1
L____
• Rotate the pinion gears toward the differential
opening just enough to slide in the pinion
thrust washers.
• Check that the mating surfaces 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