Disassembly; Inspection; C Am /Clutch Service - GMC 1982 Light Duty Truck Service Manual

Fig. 4B6-4H~Governor and Latching Bracket
Internal components can be inspected through the
windows of the differential housing.
If the governor assembly and latching bracket are the
only items to be replaced, proceed only through step No. 2 of
the disassembly procedure. To install new governor and
latching bracket, begin at step No. 6 of the reassembly
procedure.
D isa sse m b ly
1. N ote position of governor and latching bracket
assembly, Figure 4B6-4H . Remove ring gear and side
bearings following procedures established for the
standard differential.
2. U sing bushing puller tool N o. J-26252, remove
governor assembly and latching bracket by pulling the
retaining bushings as shown in Figure 4B6-5H. Pull the
latching bracket spring out of the way while pulling the
governor assembly bushing to prevent damage. Remove
the stop pin by driving through the case with a drive pin
punch.
3. Rem ove lock screw and pinion shaft, and roll out
differential pinion gears.
4. Remove thrust block and pinion thrust washers.
5. Remove cam gear, disc pack assembly and disc pack
guide clips.
6. Remove plain side gear and shims.

Inspection

1. Clean all parts with solvent. Inspect all bearing for
chipping or evidence of excessive wear. Replace parts
as needed.
2. Inspect all differential components for excessive wear
and breakage. Replace parts as needed The following
are serviceable components for this differential:
• Governor assembly and latching bracket with spring
and stop pin.
• Cam plate.
• Clutch disc pack with guides and guide clip.
• Pinion cross-shaft.
• Pinion gears.
• Pinion thrust washers.
• Reaction block (4 sizes).
• Thrust ring.
• Flange end shim (4 sizes).
Attempts to service other components may
N O T IC E :
disturb critical clearances and could
differential complaints.
If reaction block or flange end shim must be
N O T IC E :
replaced, the original pieces must be carefully
measured for thickness and replaced with a piece of the
same size.
C A M /C L U T C H SER V IC E
D isa sse m b ly
If cam plate or clutch discs must be replaced, the cam
gear sub-assembly must be serviced as follows:
1. Measure and record overall length of gear assembly
(front face of gear to back side of thrust ring, include
shim ). This dimension
Fig. 4 B6-5H--Bearing Puller J-26252
REAR AXLE 4B6-15
result in
will be needed to