Pinion Installation; Differential Case Assembly - GMC T Series 1994 Repair Manual

Each tightening 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 times to ensure that the bearings
have seated. Recheck the preload and adjust if
necessary.
10. Pinion cage (10) to the axle housing. Refer to " Pin­
ion Installation."

PINION INSTALLATION

Install or Connect (Figures 12 and 13)
Tools Required:
J 34943 Pinion Pilot Bearing Installer
J 8092 Driver Handle
1. Pinion pilot bearing (15) using J 34943 and J 8092
(figure 12).
A. Bolt the guide plate to the axle housing.
B. Place the bearing (15) onto the guide.
C. Drive the bearing into the housing. The part
number of the bearing must face the pinion
flange.
2. Measure the pinion bearing shims (11). If a new
ring and pinion is installed, the pinion bearing shim
pack must be adjusted.
• Pinion service shims are available in sizes from
0.152 to 0.6096 mm (0.006 to 0.024 inch).
• If the original pinion is being reused, the original
pinion shims should also be reused.
3. Pinion bearing shims (11) to the pinion cage.
• The shims, housing, and cage must be clean.
4. Pinion cage (10) to the axle housing (figure 13).
NOTICE: Refer to "Notice
5. Cage bolts (7).
Tighten
• Bolts to 88 N-m (65 lbs. ft.).

DIFFERENTIAL CASE ASSEMBLY

-► 4-
Install or Connect (Figure 1, 14, and 15)
Tools Required:
J 24429 Side Bearing Adjustment Spanner
J 8092 Driver Handle
J 8107 Side Bearing Puller Plug
• Lubricate all parts with axle lubricant.
1. Pinion gears (32) and pinion gear thrust washers
(31) to the pinion cross shaft spider (33).
2. Differential side gears (29) and side gear thrust
washers (30) to the differential case halves in their
original locations.
3. Pinion cross shaft spider (33) to the differential.
4. Case halves.
A. Align the scribe marks on the case halves.
B. Check that the mating surfaces of the differen­
tial case and the ring gear are clean and burr
free.
on page 4B4-1.
"
5. Ring gear (14) to the differential.
A. Thread two left-hand threaded studs into the
ring gear on opposite sides.
B. Place the ring gear onto the case, and align the
holes in the case with the studs.
C. Press the ring gear onto the case far enough to
start the bolts using J 8107 to protect the differ­
ential from the press ram (figure 14).
NOTICE: Refer to "Notice" on page 4B4-1.
6. Ring gear bolts (36).
Tighten
A. The ring gear bolts alternately in stages gradu­
ally pulling the ring gear onto the differential
case.
B. The ring gear bolts in sequence to 163 N-m
(120 lbs. ft.).