GMC 1976 ZEO 6083 Maintenance Manual page 494

7- 4 6 TRANSMISSION
changeably with the reaction carrier which does
not have an undercut and spacer ring .
PINION GEAR REPLACEMENT-
REACTION AND OUTPUT
CARRIER ASSEMBLIES
1 . Support carrier assembly on its FRONT face .
2. Using a 1/2 inch diameter drill, remove the
stake marks from the end of the pinion pin, or pins,
to be replaced . This will reduce the probability of
cracking the carrier when the pinion pins are pressed
out.
CAUTION : Do not allow drill to remove any
stock from the carrier, as this will weaken
the part, and could cause the carrier to
break.
3 . Using a tapered punch, drive or press pinion
pins out of carrier.
4. Remove pinion gears, thrust washers, and
roller needle bearings .
5 . Inspect pinion pocket thrust faces for burrs
and remove if present.
6. Install eighteen needle bearings into each pin-
ion gear using petrolatum to hold bearings in place.
Use a pinion pin as a guide.
7. Place a bronze and steel thrust washer on each
side of pinion gear with steel washers against gear,
Figure 53 . Hold washers in place with petrolatum .
Figure 53-Planet Pinion Components
Figure 54-Staking Pinion Pin
8 . Place pinion gear assembly in position in car-
rier and install a pilot shaft through rear face of
assembly to hold parts in place.
9. Drive a new pinion pin into place from the
front, while rotating pinion gear . Be sure that headed
end is flush or below face of carrier.
10 . Using a punch in bench vise for an anvil,
stake opposite end of pinion pin in three places with
a blunt radius chisel, Figure 54 .
NOTE :
Both ends of pinion pins must lie below
face of carrier or interference may occur.
11 . Repeat installation procedure for each pinion
gear .
INSPECT ROLLER CLUTCH
1 . Inspect roller clutch for damaged rollers or
springs.
2. Inspect roller clutch cage for damage .
INSPECT SUN GEAR
1 . Inspect gear teeth for damage or wear .
2. Inspect splines for damage .
3 . Be sure oil lubrication hole is open .