Chevrolet 1980 Light Duty Truck Repair Manual page 327

using petrolatum to hold bearings in place. U se pinion pin
as guide (Fig. 7A -131C ).
7. Place a bronze and steel washer on each side of
pinion so steel washer is against pinion, hold them in place
with petrolatum.
8. Place pinion assembly in position in carrier and
install a pilot shaft through rear face o f assembly to hold
parts in place.
9. D rive a new pinion pin into place w hile rotating
pinion from front, being sure that headed end is flush or
below face o f carrier (Fig. 7A -132C ).
10. Place a large punch in a bench vise to be used as
an anvil w hile staking opposite end o f pinion pin in three
places. Both ends o f pinion pins must lie below face o f
carrier or interference may occur.
O U T P U T S H A F T , REAR IN T E R N A L GEAR, SUN
GEAR A N D S H A F T
Output Shaft
1. Inspect bushing for wear or galling. If replacement
is necessary, proceed as follows:
a. Thread T ool J-21465-16 into bushing and using Slide
Ham mer J-2619, remove bushing.
b. U sing T ool J-21465-1 w ith drive handle J-8092,
install bushing into place until tool bottoms.
2. Inspect bearing and thrust washer surfaces for
damage.
3. Inspect governor drive gear for rough or damaged
teeth.
4. Inspect splines for damage.
5. Inspect drive lugs for damage.
6. Inspect speedom eter drive gear.
Inspection of Rear Internal Gear
1. Inspect gear teeth for dam age or wear.
2. Inspect splines for damage.
3. Inspect gear for cracks.
Inspection of Sun Gear
1. Inspect gear teeth for dam age or wear.
2. Inspect splines for damage.
3. Be sure oil lubrication hole is open.
Inspection of Sun Gear Shaft
1. Inspect shaft for cracks or splits.
2. Inspect splines for damage.
3. Inspect bushings for scoring or galling. If necessary
to replace, proceed as follows:
SUN GEAR S H A F T B U S H IN G -F R O N T A N D
REAR
Remove
W ith sun gear shaft properly supported, using Tool J-
21465-15, with slide ham m er and A dapter J-2619, remove
bushing.
A U T O M A T IC TR A N S M IS S IO N S
P IN IO N PIN
HEADED END
NEEDLE BEARINGS
STEEL WASHER
Fi g. 7 A - 1 3 1 C - - P l a n e t P i n i o n A s s e m b l y - E x p l o d e d V i e w
Replace
U sing T ool J -2 1465-5 w ith Driver H andle J-8092 press
or drive replacem ent bushing into place until tool bottom s.
IN S P E C T IO N OF M A IN S H A FT
1. Inspect shaft for cracks or distortion.
2. Inspect splines for damage.
3. Inspect ground bushing journals for damage.
4. Inspect snap ring groove for damage.
5. M ake sure that lubrication holes are open.
NO TICE:
I f replacement o f m ainshaft is required,
m ake sure that the orifice cup plug in the service
m ainshaft is removed.
IN S P E C T IO N OF FR O N T A N D REAR B A N D S ,
S U P P O R T TO CA SE SPACER
1. Inspect lining for cracks, flaking, burning, or
looseness.
2. Inspect bands for cracks or distortion.
3. Inspect end for damage at anchor lugs or apply lugs.
4. Inspect support to case spacer for burrs or raised
edges, if present rem ove with stone or fine abrasive.
IN S P E C T IO N OF CASE E X T E N S IO N - ALL
EXC EPT CL M O D E L
1. Inspect bushing for excessive wear or damage. If
replacement is necessary, rem ove rear seal and with
Fig. 7A-1 3 2 C -ln s ta llin g Planet Pinion Pin
(400J7A-41
BRONZE W ASHER
STEEL WASHER
PLANET P IN IO N
BRONZE W ASHER
PLANET PINION PIN
HEAD END UP