Chevrolet 1973 Overhaul Manual page 75

4 - 4 4 REAR AXLE DIFFERENTIA L CARRIER
NOTE: Service shims are available from
.070" to .122" in increments of .004".
8. Remove the pinion shaft, pinion gears, side gear,
clutch pack and shim from the case.
9. Install the opposite gear, clutch pack and original
shim into the opposite side of the case. Place both
pinion gears, and thrust washers into position, and
install the pinion shaft.
10. Follow the procedure in steps 5, 6 and 7 to
determine the proper shim dimension.
11. When the proper shims have been determined to
achieve .005" to .008" backlash between both
pinion gears and both side gears, install shims,
clutch packs and side gears into case.
BOLT
(PINION SHAFT)
PINION
SHAFT
BOLT
(RING GEAR)
SIDE
BEARING
12. Mount the case onto the axle shaft locked in a vise.
Place both pinions and thrust washers into
position—180°apart—and carefully "roll in" by
turning the case on the shaft.
NOTE: A large "C" clamp may be used to
apply slight compression against pinion gears
to aid the "rolling in" procedure.
13. Tap the preload spring into place with a hammer.
14. Install the pinion shaft and lock screw.
15. Install the side bearings and ring gear using the
procedure outlined for conventional units.
16. Place the differential unit in the carrier and adjust
ring gear and pinion blacklash, and gear tooth
pattern.
Fig. 16D—Chevrolet P ositraction—Exploded
SHIM
SPLINED
DISC (3)
FIXED
DISC (4)
THRUST
WASHER
PINION
GEAR
RELOAD
SPRING
OVERHAUL MANUAL