GMC 1976 ZEO 6083 Maintenance Manual page 492

7- 4 4 TRANSMISSION
6. Inspect governor assembly bore for scratches
or scoring.
7. Inspect governor pipes screen assemblies
(located in governor pipe holes in case) for plugging
or damage .
8. Inspect modulator valve bore for scoring or
damage.
9. Inspect output flange bushing for wear, galling
and open lubrication groove .
CENTER SUPPORT AND GEAR
UNIT
DISASSEMBLY
1 . Remove center support assembly from reac-
tion carrier by lifting center support straight up .
2. Remove center support to reaction carrier
thrust washer .
NOTE :
Thrust washer may have stuck to back of
center support. If so, remove from center sup-
port .
3 . Remove reaction carrier and roller clutch as-
sembly from output carrier, Figure 49, and remove
roller clutch assembly from reaction carrier.
4. Remove center support to sun gear races and
thrust bearing from sun gear .
NOTE :
One of the races may have stuck to back
of center support.
5 . Remove front internal gear ring from output
carrier assembly, Figure 50.
bly.
6. Remove sun gear from output carrier assem-
7. Remove reaction carrier to output carrier plas-
tic thrust washer from output carrier.
NOTE :
The service thrust washer is metal.
8. Invert gear unit and place in Rear Unit Hold-
ing Fixture, J-6116, with main shaft pointing down-
ward .
9. Remove snap ring securing output flange to
output carrier and remove output flange .
10 . Remove thrust bearing and races from rear
internal gear .
Figure 49-Removing Reaction Carrier
11 . Lift rear internal gear and main shaft out of
output carrier and remove thrust bearing and races
from inner face of rear internal gear .
12 . Remove snap ring from end of main shaft and
remove rear internal gear .
13 . Remove output carrier from holding fixture.
INSPECT OUTPUT FLANGE
1 . Inspect bearing and thrust washer surfaces for
damage .
Figure 50-Removing Gear Ring