Chevrolet 1991 Light Duty Truck Repair Manual page 206

4B7-2 LOCKING DIFFERENTIAL
A. / -lnch Ring Gear
71 2
B. / -lnch Ring Gear
8 1 2
C. / -!nch Ring Gear
9 1 2
. Differential Case
1
2. Stop Pin (91 /z Only)
3. Lock Screw
4. Governor Bushing
5. Latching Bracket Bushing
CLEANING AND INSPECTION
Clean
All parts with solvent.
Inspect
All parts for excessive wear and breakage.
Pinion gear and side gear teeth for wear, cracks,
scoring, and spalling.
Thrust washer for wear.
The fit of the side gears on the axle shafts.
Differential case for cracks and scoring.
Thrust sleeve for excessive wear. Do not replace
the thrust sleeve unless necessary. Inspect the
side gear bore for scoring. If scoring is present,
replace the entire differential.
Replace parts as necessary.
Pinion Thrust Washer
Pinion Gear
Side Gear Thrust Washer
Clutch Plates
Side Gear
Latching Bracket
Clutch Plates
Side Gear Thrust Washer
Side Thrust Sleeve (
9 1 /2
Wave Washer
Figure 1— D ifferential Components
CAM UNIT ASSEMBLY
E
1. Cam plate (16) to the cam side gear (21).
2. Wave spring.
3. Clutch plates ( 7 1 / 2 - 7 5/8—8 plates.
plates.
4. Snap ring.
5. Guide clips (20) to the plates.
CAM UNIT ASSEMBLY - 9 1/2-INCH
E
1. Cam plate (16) to the cam side gear (21).
2. Wave spring.
3. Clutch plates.
4. Thrust sleeve (14).
Cam Plate
Thrust Block
Pinion Shaft
Guide Clip
. Guide Clip
20
21. Side Cam Gear
22. Retaining Ring
23. Governor
Only)
- 7 1/2 AND 8 1/2-INCH
Install o r Connect
• Alternate the plates as shown in figure 2.
• Use grease in the clips to hold them in place
on the plates.
Install or Connect
• Alternate the plates as shown in figure 1.
• Press the thrust sleeve flush with the side gear
disc splines.
F5914
1/2—10
8