Chevrolet 1991 Light Duty Truck Repair Manual page 130

4B2-8 8 1/2-INCH RING GEAR
Figure 16— Installing the Pinion Flange
• If the preload torque is below the preloads given
above, continue torquing the nut in small incre­
ments. Check the preload after each tightening.
Each tightening increases the bearing preload by
several pounds. If the bearing preload is exceed­
Figure 17—Checking Pinion Bearing Preload
ed, the pinion will have to be removed, and a new
collapsible spacer installed.
• Once the preload has been obtained, rotate the
pinion several times to assure that the bearings
have seated. Recheck the preload, and adjust if
necessary.
8. Differential case. Refer to " Backlash Adjustment"
in this section.
DIFFERENTIAL CASE ASSEMBLY
|-K -| Install or Connect (Figure 1)
Tools Required:
J 8107-4 Differential Side Bearing Remover
Plug
J 8092 Driver Handle
J 22761 Differential Side Bearing Installer
• Lubricate all parts with rear axle lubricant.
1. Side gear thrust washers (19) to the side gears
22
( ).
2. Side gears (22) to the differential case (24).
• Place the side gears in place on the same side
as removed.
3. Pinion gears (21) to the differential without the
thrust washers (20).
• Place one pinion gear 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.
4. Pinion thrust washers (20).
• Rotate the pinion gears toward the differential
opening just enough to slide in the pinion
thrust washers.
• Check that the mating surfaces of the differen­
tial case and the ring gear are clean and burr
free.
5. Ring gear (7) to the differential case (24).
• Thread two left-hand threaded studs into the
ring gear on opposite sides (Figure 18).
• Place the ring gear onto the case, and align the
holes in the case with the studs.
Figure 18—Aligning the Ring Gear Studs