General Description - Chevrolet 1973 Overhaul Manual

Vehicles with 8 1/2" ring gear or 8 7/8" ring gear axles
use three optional limited slip differentials, namely
Chevrolet, Eaton and Borg Warner. Corvette uses only
the Eaton unit.
The Borg Warner unit is not repairable except for
differential side bearings and must be replaced with
either a Chevrolet or an Eaton Positraction differential
unit, if service is necessary. See figure ID.
All truck 10 1/2" ring gear axles produced by Chevrolet
use an optional Eaton Positive Locking differential that
is serviced as an assembly only. Truck 10 1/2" ring gear
axles produced by Dana use only the optional Dana
Power-Lok, shown in figure 17D.
Overhaul procedures for limited slip axles are the same
as for standard axles, except for the following
operations.
1. R in g G ear-to-Case
Bolt
2. Differential C a se
3. S id e B e arin g
4. Pinion Lock Screw
and W a s h e r

GENERAL DESCRIPTION

5. R in g G ear
6
S h im
.
7. C lutch P a ck G u id e
8 Clutch D isc
9. .
C lutch Plates
10 S id e G ear
.
Fig. 2 D —Eaton Positraction Exploded View
REAR AXLE DIFFERENTIAL CARRIER
Fig. I D —Borg W arner Positraction Id e n tific a tio n
S p rin g Retainer
Pinion Thru st w ash e r
Pinion G ear
Pinion S h aft
Preload S p r in g
4 -3 9
OVERHAUL MANUAL