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AUTOMATIC TRANSMISSION
21-105
Fig. 32 Planetary C
(6) Assemble
# 6 t h r u s t washer, front planetary
gear and a n n u l u s gear a n d support (Fig. 32). I n s t a l l
assembled components o n o u t p u t shaft.
(7) Verify t h a t a l l p l a n e t a r y components are prop-
erly seated a n d properly meshed.
(8) I n s t a l l f i n a l snap r i n g a n d check end play
again. I f end play is n o t correct, i t can be adjusted
w i t h a different thickness snap r i n g . Select f i t snap
rings are available i n 1.07, 1.63, and 2.13 m m (.042,
.064 and .084 inch) thicknesses.
PLANETARY GEAR TRAIN-A-727
GEARTRAIN
END PLAY
MEASUREMENT
(1) Measure gear t r a i n end play before disassembly
(Fig. 31).
(2) Stand assembly u p r i g h t w i t h f o r w a r d end of
output shaft o n wood block so a l l parts w i l l move for-
w a r d against snap r i n g a t front of shaft (Fig. 31).
This is necessary for a n accurate measurement.
(3) Insert feeler gauge between shoulder on output
shaft a n d r e a r a n n u l u s gear support h u b (Fig. 31).
E n d play should be .15 - 1.21 m m (.006 - .048 inch).
(4) I f end play is incorrect, t h e selective snap r i n g
or t h r u s t washer m a y need replacement.
PLANETARY
GEARTRAIN
DISASSEMBLY-A-
727
(1) Remove select f i t snap r i n g (Fig. 33).
(2) Remove front p l a n e t a r y gear, # 4 t h r u s t washer,
front annulus gear and # 5 t h r u s t washer (Fig. 33).
(3) Remove snap r i n g and remove s un gear, d r i v i n g
shell and # 6 t h r u s t plate (Fig. 33).
(4)
Remove snap
r i n g
a n d remove
# 7 t h r u s t
washer, rear planetary gear, # 8 t h r u s t plate, rear
\r Train—A-998/999
annulus a n d low-reverse d r u m (Fig. 33).
Geartrain Inspection
Clean t h e g e a r t r a i n components i n solvent and dry
t h e m w i t h compressed air.
Check s u n gear a n d d r i v i n g shell condition. Re-
place t h e s u n gear as a n assembly i f t h e gear or
bushings a r e scored or w o r n (the sun gear bushings
are not serviceable). Replace the d r i v i n g shell i f dam-
aged i n a n y way.
Replace t h r u s t washers
and plates
i f cracked,
scored or w o r n .
Inspect t h e planetary gear sets. Replace t h e gear
sets i f the gears, p i n i o n pins, or carrier are damaged
i n any way.
Check condition o f the annulus gear a n d support.
Replace t h e a n n u l u s gear and support i f either com-
ponent is w o r n or damaged.
Inspect t h e machined surfaces of the output shaft.
Replace t h e shaft i f scored, pitted, or damaged i n any
way.
Inspect t h e low-reverse d r u m a n d annulus gears.
Replace t h e a n n u l u s gears and the low reverse d r u m
i f worn, cracked or damaged i n any fashion.
ASSEMBLING
PLANETARY
GEARTRAIN—A-
727
(1) L u b r i c a t e planetary components w i t h transmis-
sion f l u i d d u r i n g assembly. Petroleum j e l l y can be
used to l u b r i c a t e and hold t h r u s t washers and plates
i n position.
(2) Assemble low-reverse d r u m , rear annulus gear,
# 8 t h r u s t plate and rear planetary gear (Fig. 33). I n -
stall t h e assembled components on the output shaft.
(3) I n s t a l l # 7 t h r u s t washer on rear planetary gear
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