Borg Warner (Cone Type); Description; Inspection - GMC 1982 Light Duty Truck Service Manual

20 FT. LBS.
CASE
I
CLUTCH CONE
SIDE GEAR
SPRING
BLOCK
PINION
THRUST
WASHER
PINION
GEAR
SPRING
CLUTCH CONE/
SIDE GEAR
CASE
Fig. 4B6-15--Limited Slip (Cone Type)
DESC RIPTIO N
The limited slip differential can be identified by a tag
attached to the lower right section of axle cover. It is
designed to direct the major driving force to the wheel with
greater traction, thereby reducing the posibility of the car
becoming stuck while driving under adverse conditions.
All rear axle parts of vehicles equipped with the limited
slip differential are interchangeable with those equipped
with the conventional differential, except for the case
assembly. It is similar in all respects to the conventional case
assembly, with the addition of cone clutches splined to each
side gear.

BORG WARNER (CONE TYPE)

M A IN T E N A N C E A N D LU BR ICA T IO N
Refer to Section OB for maintenance and lubrication
requirements.
SER V IC E P RO CED U RES
Rear axle service procedures are the same for the
limited slip as for the conventional differential, except for
servicing the case assembly.
If the case, clutch cone/side gears, or pinion gears are
damaged, it is necessary to replace case assembly.
Never raise one wheel and run the engine with the
transmission in gear. The driving force to the wheel on the
floor will cause the vehicle to move. Do not use "on the
vehicle" type wheel balancers on the rear wheels, unless
both wheels are off the floor.
Differential Case
D isa sse m b le
1. Before disassem bling
differential side bearings for visible damage of rollers
and outer races.
2. Place one outer race onto its matched inner race and
roller assembly and turn slowly, applying hand load.
3. If bearing outer race turns smoothly and no visible
damage is found, bearing can be reused.
4. Repeat above operation with other race and matched
bearing and check for smoothness.
Both side bearings and their outer races are matched
parts. If either bearing is to be replaced, its matching
outer race must also be replaced.
5. Inspect fit of inner races on case hubs by prying against
shoulders at puller recesses. Bearing inner races must
be tight on case hubs.
If either bearing is loose on case, entire case must be
replaced.
6. If bearing inspection indicates, bearings should be
replaced. 7.?If removing ring gear, clamp case in vise
so jaws are 90° to pinion shaft holes and remove ten
ring gear retaining bolts.
8. Partially install two bolts on opposite sides of ring gear.
9. Remove ring gear from case by alternately tapping on
bolts. Do not pry between case and ring gear.
10. Remove differential case half attaching bolts.
11. Lift cap half of case from flange half. Remove clutch
cone/side gears, spring blocks, preload springs, pinion
gears and shaft.
Be certain that each clutch cone/side gear and pinion
gear are marked so they can be installed in their
original location.
C le a n in g a n d Inspection
1. Make certain all parts are absolutely clean and dry.
2. Inspect pinion shaft, pinion and side gears, brake cone
surfaces and corresponding cone seats in case. The cone
seats in case should be smooth and free of any excessive
scoring. Slight grooves or scratches, indicating passage
of foreign material, are permissable and normal. The
land surface on the heavy spirals of male cones will
duplicate case surface condition. If case or clutch
REAR AXLE 4B6-7
differential case, inspect