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21 - 104
AUTOMATIC TRANSMISSION
Secure t h e shaft w i t h a new snap r i n g .
(4) I n s t a l l n e w seals o n the clutch piston. Lubricate
the piston seals w i t h Door Ease or petroleum j e l l y t o
ease i n s t a l l a t i o n . Be sure the seal lips face the i n p u t
shaft.
(5) I n s t a l l t h e clutch piston i n t h e piston retainer.
Use a t w i s t i n g m o t i o n t o seat t h e piston a t t h e bot-
t o m of t h e retainer. D o n o t attempt to p u s h t h e
p i s t o n s t r a i g h t i n . T h i s c o u l d fold the seals over
c a u s i n g l e a k a g e a n d c l u t c h slip.
(6) I n s t a l l t h e # 2 t h r u s t washer on t h e piston r e -
tainer ( F i g . 29). Use petroleum j e l l y t o hold t h e
t h r u s t washer i n place.
(7) I n s t a l l t h e assembled piston r e t a i n e r i n t h e
clutch r e t a i n e r (Fig. 29).
(8) I n s t a l l t h e piston spring, spacer s p r i n g a n d
wave s p r i n g i n t h e clutch retainer (Fig. 27). Be sure
the wave s p r i n g is f u l l y seated. T a p t h e spring i n t o
place i f necessary.
(9) I n s t a l l t h e i n n e r pressure plate. T h e n i n s t a l l
the first disc followed b y a steel plate u n t i l a l l t h e
discs and plates are installed.
(10) I n s t a l l t h e outer pressure plate a n d t h e selec-
tive snap r i n g .
(11) Check clutch pack clearance w i t h a feeler
gauge ( F i g . 28). Clearance should be .63 - 1.14 m m
(.025 - .045 inch).
(12) I f clutch pack clearance is incorrect, change
the selective snap r i n g as needed. See t h e specifica-
tions section for available snap r i n g thicknesses.
PLANETARY GEAR TRAIN-A-998/999
GEARTRAIN
END PL A Y
MEASUREMENT
(1) Measure planetary gear t r a i n e n d play before
disassembly (Fig. 31).
(2) Stand t h e assembly u p r i g h t w i t h t h e forward
end of t h e output shaft on a wood block. T h i s is nec-
essary for accurate measurement, i t causes the plan-
etary components to move forward against t h e snap
r i n g a t f r o n t o f the shaft (Fig. 31).
(3) Measure end play w i t h a feeler gauge. Insert
the gauge between t h e shoulder on t h e output shaft
and t h e rear annulus gear support h u b (Fig. 31).
(4) E n d play should be .12 - 1.21 m m (.005 - .048
inch). I f end play is incorrect, the snap r i n g or t h r u s t
washer m a y have to be replaced.
PLANETERY
GEARTRAIN
DISASSEMBLY-A-
998/999
(1) Remove selective
snap r i n g a n d # 3 t h r u s t
washer f r o m front end of output shaft (Fig. 32).
(2) Remove planetary gear components f r o m o u t p u t
shaft (Fig. 32).
(3) Remove snap r i n g and # 4 t h r u s t washer ( F i g .
32).
•
Fig. 32 Measuring Planetary End Play—All
(4) Remove annulus support, annulus gear, # 5
t h r u s t washer, front planetary, # 6 t h r u s t washer,
sun gear, spacer and # 7 t h r u s t plate (Fig. 32).
(5) Remove d r i v i n g shell, # 8 t h r u s t plate, snap
r i n g rear p l a n e t a r y and # 1 0 t h r u s t washer (Fig. 32).
(6) Remove and dissassemble rear annulus gear,
support, low-reverse d r u m and output shaft (Fig. 32).
Geartrain Inspection
Clean t h e planetary components i n solvent and d r y
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 gear i f damaged or i f t h e bushings are
scored o r w o r n (bushings are n o t serviceable). Re-
place t h e d r i v i n g shell i f w o r n , cracked or damaged.
Replace planetary gear sets i f gears, p i n i o n pins, or
c a r r i e r a r e damaged i n any way. Replace t h e a n n u -
lus gear a n d support i f either component is w o r n or
damaged. Inspect machined surfaces of output shaft.
Replace t h e output shaft i f scored, pitted, or dam-
aged i n a n y way. Replace t h e t h r u s t washers a n d
plates i f w o r n or damaged.
ASSEMBLING
PLANETARY
GEARTRAIN-A-
998/999
(1) L u b r i c a t e planetary components w i t h t r a n s m i s -
sion f l u i d d u r i n g assembly. Petroleum j e l l y can be
used t o 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 , annulus gear a n d
support a n d output shaft.
(3) I n s t a l l # 1 0 t h r u s t washer on rear planetary
gear a n d i n s t a l l gear i n rear annulus.
(4) I n s t a l l # 9 t h r u s t washer and snap r i n g on out-
p u t shaft a n d seat washer against rear planetary.
(5) Assemble # 8 and # 7 t h r u s t plates, spacer, su n
gear a n d d r i v i n g shell (Fig. 32). I n s t a l l
assembled
components on output shaft.
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