Pinion Installation - GMC 1989 Light Duty Truck Repair Manual

Measure each shim separately with a micrometer
and add them together to obtain the total shim pack
thickness. If a baffle (5) or slinger is used, these
must also be measured and included in the shim
pack (figure 28).

PINION INSTALLATION

E3
Install or C onnect
Tools Required:
J 7818 Front Pinion Bearing Cup Installer
J 5590 Rear Pinion Bearing Cone Installer
D-111 Rear Cup Installer (Miller)
C-4171 Handle (Miller)
J 8092 Handle
J 8614-01 Pinion Flange Remover
D-116-1 Pinion Height Block (Miller)
D-116-2 Master Disc (Miller)
D-115-3 Master Disc (Miller)
D-115 Scooter Gage (Miller)
D-163 Seal Installer (Miller)
1
.
Place the required amount of shims (and baffle if
used) in the inner bearing bore.
2
Drive the inner bearing cup into the axle assembly
.
using D-111 and C-4171. The cup must be seated on
the shims (figure 29).
3. Drive the outer bearing cup into the axle assembly
using J 7818 and J 8092 (figure 30).
Inner bearing cone (and slinger if used) on the
4.
pinion. Drive the bearing onto the pinion shaft using
J 5590 (figure 31).
Pinion into the axle housing.
Outer pinion bearing (7) and thrust washer (8).
Do not assemble the preload shims or pinion oil seal
at this time.
Pinion flange (10).
Washer (11) and pinion nut (12).
Tighten
The nut (12) while holding the pinion with
J 8614-01. Tighten the nut until it requires a
9 /4-INCH RING GEAR FRONT AXLE 4C2-11
3
Figure 3 1 — Installing the In n er B earing
F-04719