GMC 1989 Light Duty Truck Repair Manual page 285

T TRUCK FRONT AXLE 4C3-15
J 3 3 8 4 2
F-05789
Figure 33— Installing the Differential
Pilot Bearing
Inspect (Figure 35)
J ?
Tool Required:
J 33798 Engagement Tool
Operation of the shift mechanism. Insert J 33798
into the shift fork. Turn the axle shaft while engaging
and disengaging the shift mechanism with the tool.
The mechanism should operate smoothly. If not,
rem ove the tu be and ch e ck fo r d am ag ed or
improperly installed parts.
Figure 34— Installing the Thrust Washer
Figure 32— Installing the Shift
Housing Seal