Chevrolet 1988 Light Duty Truck Repair Manual page 174

4B3-8 91/2-INCH RING GEAR
tig h te n in g . Each tig h te n in g increases the
bearing preload by several pounds. If the
bearing preload is exceeded, the pinion will
have to be removed, and a new collapsible
spacer installed.
• Once the preload has been obtained, rotate
the pinion several tim es to assure that the
bearings have seated. Recheck the preload,
and adjust if necessary.
8. Differential case. Refer to " Backlash A dju stm e nt" in
this section.
DIFFERENTIAL CASE ASSEMBLY
□ Install or C o n n ect (F ig u re 1)
Tools Required:
J 8107-3 D ifferential Side Bearing Removal
Plug
J 8092 Driver Handle
J 29710 Differential Side Bearing Installer
• Lubricate all parts with rear axle lubricant.
1. Side gear thrust washers (32) to the side gears (33).
2. Side gears (33) to the differential case (27).
• Place the side gears in place on the same side
as removed.
3. Pinion gears (31) to the differential w ithout the thrust
washers (30).
• 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.
4. Pinion thrust washers (30).
• 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 th e m a tin g s u rfa c e s o f th e
differential case and the ring gear are clean
and burr free.
5. Ring gear (15) to the differential case (27).
• Thread two left-hand threaded studs into the
ring gear on opposite sides.
• Place the ring gear onto the case, and align
the holes in the case with the studs (figure 18).
• Press the ring gear onto the case far enough
to start the bolts using J 8107-3 to protect the
differential from the press ram (figure 19).
6. New ring gear bolts (26).
• Tighten the ring g ear bolts a lte rn a te ly in
stages gradually pulling the ring gear onto the
differential case.
$
T ig h ten
• The ring gear bolts in sequence to 145 N m
(105 ft. lbs.).
7. D iffe re n tia l sid e b e a rin g s (22) usin g J 29710,
J 8107-3 and J 8092 (figure 20).
• Place J 8107-3 into the differential on the side
opposite of bearing installation to protect the
differential case.
• Drive the bearing onto the case using J 29710
and J 8092.
A. Left Hand Studs
20. Ring G ear
24. D ifferential Case
Figure 19— Installing the Ring Gear to the Case
J
Figure 20— Side Bearing Installation
F-04683
J-29710
F-04732