REAR AXLE DIFFERENTIAL CARRIER 4-27
R e p airs
Pinion Disassem bly
Check pinion end play and bearing adjustment before
disassembling; then proceed as follows:
1. Place companion flange in vise, remove cotter pin, nut
and washer
( 6 6
and 65) from pinion (fig.
6
L).
2.
Place assembly in arbor press with cage on bed of arbor.
Press pinion (28) downward and out of cage. Remove
companion flange (64).
3.
Remove bearing adjusting spacer (50) from pinion and
tag for reassembling reference.
4. Press oil seal and retainer assembly (63) from pinion
cage (54).
5. Remove pinion outer bearing cone (59) from cage as
sembly.
6
.
If necessary, pinion bearing cone (49) can be pressed off
using Puller J-3493 (fig. 3K).
7.
Remove stake points holding straight roller pilot bear
ing (48), then press pinion from bearing with bearing
supported in J-3493 (fig. 3K).
8
. When inspection indicates necessity, cups (52 and 58)
can be removed from cage with Tool J-3940 as shown
in Figure 2K.
Planetary Unit-Disassem bly
1.
Remove nuts from ring gear bolts (9); then remove
bolts.
2. Tap ring gear (28) with rawhide mallet until free of
support case flange.
3.
Lift left-hand support case (29), thrust washer (27) and
ring gear (28) oil right-hand support case.
4.
Pry high speed clutch plate (26) off idler pinion and
clutch plate pins (25 and 24) as shown in Figure 3L then
remove pinions and pins.
5. Remove differential assembly from right-hand support
case (10). Remove support case thrust washer (11, View
A, fig. 4L).
Differential D isassem bly
1.
Mark both halves of differential case distinctly to assure
correct positioning at assembly.
2.
Cut cap screw lock wire, then remove differential cap
screws (14).
Fig. 3L-H ig h-S p eed Clutch Plate Removal
3.
Lift off right-hand half of case; then remove side gear
(17) and thrust washer (View B, fig. 4L).
4.
Remove spider (20) and pinion gears (19) from case;
then remove thrust washers (18) and pinion gears (19)
from spider(
2 0
).
5.
Remove left-hand side gear and thrust washer (21) from
left case (
2 2
).
6
. Remove differential bearing cones
( 8
and 31) from sup
port case by striking inner races on alternate sides with
a pin punch through holes in case (View C, fig. 4L).
Inspection
NOTE: Discard old gaskets and oil seals as they are
usually no longer serviceable and replacement is
recommended.
1.
Wash all parts in cleaning solvent.
2. Rotate each bearing slowly and at the same time exam
ine bearing for roughness, defects or wear. Inspect bear
ing cups and cage bores for pitting and discoloration.
3. Examine all gears, pinions and splines for surface hard
ening, distortion, worn spots or other defects.
4. Check the support case for run-out. If run-out exceeds
Clutch Plate
D iffe re n tia l
Thrust W asher
A-SUPPORT CASE THRUST WASHER
REMOVAL
Thrust W asher
B-SIDE GEAR THRUST WASHER
REMOVAL
Fig. 4L— D ifferential Disassem bly
CHEVROLET OVERHAUL M A N U A L SUPPLEMENT
Summary of Contents for 40 60 Series
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Page 96: ...n 47 k u m i i i iin I ll II I...
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