Chevrolet 1980 Light Duty Truck Repair Manual page 110

4B-42 REAR AXLE DIFFERENTIAL
F ig . 1 1 D ~ S p r in g P a c k C o m p r e s s e d f o r In s t a ll a t i o n
F ig . 1 2 D - - l n s t a l lin g S p r in g P a c k C o m p r e s s io n T o o l ( C o r v e t te )
CHEVROLET LIM ITED SLIP - FIGURE 15D
Disassem bly
1. R em ove ring gear and side bearings follow ing the
procedures established for the conventional differential unit.
R em ove pinion shaft.
2. U sing a wide, blunt instrument such as a drift or
block o f w ood, drive the preload spring from the case.
3. Support an axle shaft in a vise, and slide the case into
the shaft; then turn the case to rem ove both pinions and
thrust washers.
4. R em ove the case from the axle shaft and remove
both side gears, clutch packs and shims. Mark the gears,
clutch packs and shim s for reinstallation in same positions.
O V E R H A U L M A N U A L
F ig . 1 3 D - l n s t a l l i n g S p r in g P a c k
F ig . 1 4 D - - M e a s u r i n g P o s it r a c t io n R o t a t in g T o r q u e
Inspection
Check the clutch plates and discs for wear and signs
o f overheating. Check the condition o f the preload spring.
Check the gear teeth for signs o f wear. Replace parts as
needed. Clean all parts to be used for assembly.
The force required to com press the preload spring to
1-5/16 inches should be 300 + 30 lbs.
Reassem bly
1. Lubricate the clutch discs and plates with lim ited slip
lubricant.
2. A lternately position clutch plates and discs on a side
gear, beginning and ending with a clutch plate.
3. Position the side gear, clutch pack and original shim
into the case.