Chevrolet 1977 10 Series, Repair Manual, Page: 75 / 468

REAR AXLE DIFFERENTIAL 4B-3
1. Companion Flange
2. Deflector
3. Pinion O il Seal
4. Pinion Front Bearing
5. Pinion Bearing Spacer
6. Differential Carrier
7. Differential Case
8. Shim
9. Gasket
10. Differential Bearing
11. "C" Lock
12. Pinion Shaft Lock
Screw
13. Cover 19. Thrust Washer
14. Pinion Shaft 20. Differential Pinion
15. Ring Gear 21. Shim
16. Side Gear 22. Pinion Rear Bearing
17. Bearing Cap 23. Drive Pinion
18. Axle Shaft
9
10
11-(N O T ON B O TYPE AXLES)
Fig. 4B -1--C ross S e c tio n o f T y p ic a l D iffe re n tia l
DIFFERENTIAL CASE
Removal and Disassembly
NOTE:
Before preoceeding with following steps, it is
advisable to check the existing ring gear to pinion
backlash as described under "Checks and Adjustm ents".
This will indicate gear or bearing wear or an error in
backlash or pinion depth setting which will help in
determ ining cause of axle noise. Backlash should be
recorded so that if same gears are reused, they may be
reinstalled at original lash to avoid changing gear tooth
contact.
1. Remove screw that retains differential pinion shaft
and remove pinion shaft.
2. Remove rear axle shaft.
3. Roll out the differenital pinions and thrust washers;
then remove side gears and thrust washers. M ark the pinions
and side gears so they can be reassembled in their original
positions.
4. M ark side bearing caps for installation in same
position during reassembly. Loosen bolts holding differential
side bearing caps to housing.
CAUTION: Do not attempt to pry caps o ff as this
may damage machined face o f caps.
5. Using a pry bar as shown in figure 4B-2, pry
differential case out of carrier. Exercise caution in prying on
carrier so that gasket sealing surface is not damaged. If the
bearings are preloaded, the case will suddenly fall free when
it is pried past a certain point; therefore, make sure case is
properly supported to prevent damage. The bearing cups may
be loosely installed, as shown in figure 4B-2, to prevent case
from falling.
6. Place right and left bearing outer races and shims in
sets with m arked bearing caps so that they can be reinstalled
in their original prositions.