Page 1577 of 2321

(5) Back off front band adjusting screw 2ò turns.
(6) Hold adjuster screw in position and tighten
locknut to 47 N´m (35 ft. lbs.) torque.
(7) Install air cleaner assembly.
(8) Connect battery negative cable.
ADJUSTMENTS - REAR BAND
The transmission oil pan must be removed for
access to the rear (low/reverse) band adjusting screw.
(1) Raise vehicle.
(2) Remove transaxle oil pan and drain fluid (Fig.
111) (Fig. 112).(3) Loosen band adjusting screw locknut 5-6 turns.
Be sure adjusting screw turns freely in lever.
(4) Tighten adjusting screw to 5 N´m (41 in. lbs.)
(Fig. 113).
(5) Back off adjusting screw 3 turns.
(6) Hold adjusting screw in place and tighten lock-
nut to 14 N´m (125 ft. lbs.) torque.
(7) Install a bead of Moparž Silicone Rubber Adhe-
sive Sealant to the oil pan and install to case imme-
diately.
(8) Install oil pan-to-case bolts and torque to 19
N´m (165 in. lbs.).
(9) Lower vehicle and refill transmission with
Moparž ATF Plus 4, Type 9602, fluid.
CLUTCH - FRONT
DESCRIPTION
The front clutch assembly (Fig. 119) is composed of
the front clutch retainer, pressure plate, clutch
plates, driving discs, piston, piston return spring,
return spring retainer, and snap-rings. The front
clutch is the forward-most component in the trans-
mission geartrain and is directly behind the oil
pump. It is considered a driving component.
NOTE: The number of discs and plates may vary
with each engine and vehicle combination.
Fig. 111 Transaxle Oil Pan Bolts
1 - TRANSAXLE OIL PAN
2 - OIL PAN BOLTS
Fig. 112 Transaxle Oil Pan
1 - TRANSAXLE OIL PAN
2 - OIL FILTER
Fig. 113 Adjust Low/Reverse Band
1 - LOW-REVERSE BAND LEVER
2 - ADJUSTING SCREW
3 - STRUT
4 - LOW-REVERSE BAND
5 - LOCK NUT
6 - LEVER (SHORT)
21 - 80 AUTOMATIC - 31THRS
BANDS (Continued)
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OPERATION
To apply the clutch, pressure is applied between
the clutch retainer and piston. The fluid pressure is
provided by the oil pump, transferred through the
control valves and passageways, and enters the
clutch through the hub of the reaction shaft support.
With pressure applied between the clutch retainer
and piston, the piston moves away from the clutch
retainer and compresses the clutch pack. This action
applies the clutch pack, allowing torque to flow
through the input shaft into the driving discs, and
into the clutch plates and pressure plate that are
lugged to the clutch retainer. The waved snap-ring is
used to cushion the application of the clutch pack. In
some transmissions, the snap-ring is selective and
used to adjust clutch pack clearance.
When pressure is released from the piston, the
spring returns the piston to its fully released position
and disengages the clutch. The release spring also
helps to cushion the application of the clutch assem-
bly. When the clutch is in the process of being
released by the release spring, fluid flows through a
vent and one-way ball-check-valve located in the
clutch retainer. The check-valve is needed to elimi-
nate the possibility of plate drag caused by centrifu-
gal force acting on the residual fluid trapped in the
clutch piston retainer.
DISASSEMBLY
(1) Remove front clutch waved snap ring using a
suitable screwdriver (Fig. 114).(2) Remove waved snap ring and reaction plate
(Fig. 115).
(3) Remove clutch pack (Fig. 116).
Fig. 114 Front Clutch Waved Snap Ring
1 - WAVED SNAP RING
2 - SCREWDRIVER
3 - FRONT CLUTCH ASSEMBLY
Fig. 115 Thick Steel Plate and Waved Snap Ring
1 - WAVED SNAP RING
2 - THICK STEEL PLATE
3 - FRONT CLUTCH RETAINER
Fig. 116 Front Clutch (4-Disc Shown)
1 - FRONT CLUTCH RETAINER
2 - CLUTCH PLATES
3 - DRIVING DISCS
RSAUTOMATIC - 31TH21-81
CLUTCH - FRONT (Continued)
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Page 1579 of 2321
(4) Using tool C3575A, compress front clutch
return spring and remove snap ring (Fig. 117).(5) Remove retainer, return spring and piston (Fig.
118) (Fig. 119).
Fig. 117 Front Clutch Return Spring Snap Ring
1 - COMPRESSOR TOOL C-3575-A
2 - FRONT CLUTCH RETAINER
3 - SNAP RING
4 - SNAP RING PLIERS
Fig. 118 Front Clutch Return Spring and Piston
1 - LIP SEALS
2 - PISTON
3 - RETURN SPRING RETAINER
4 - SNAP RING
5 - PISTON RETURN SPRING
6 - FRONT CLUTCH RETAINER
21 - 82 AUTOMATIC - 31THRS
CLUTCH - FRONT (Continued)
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Fig. 119 Front Clutch Assembly
1 - SNAP RING (WAVE)
2 - REACTION PLATE
3 - CLUTCH DISC
4 - CLUTCH PLATE
5 - SEAL
6 - CLUTCH RETAINER7 - SEAL
8 - PISTON
9 - SPRING
10 - SNAP RING
11 - SPRING RETAINER
RSAUTOMATIC - 31TH21-83
CLUTCH - FRONT (Continued)
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Page 1581 of 2321
ASSEMBLY
(1) Install front clutch piston, return spring, and
retainer (Fig. 119) (Fig. 120).
(2) Compress front clutch return spring using Tool
C3575A and install snap ring (Fig. 121).(3) Install front clutch pack (Fig. 122).
(4) Install reaction plate and waved snap ring (Fig.
123) (Fig. 124).
Fig. 120 Front Clutch Return Spring and Piston
1 - LIP SEALS
2 - PISTON
3 - RETURN SPRING RETAINER
4 - SNAP RING
5 - PISTON RETURN SPRING
6 - FRONT CLUTCH RETAINER
Fig. 121 Front Clutch Return Spring Snap Ring
1 - COMPRESSOR TOOL C-3575-A
2 - FRONT CLUTCH RETAINER
3 - SNAP RING
4 - SNAP RING PLIERS
Fig. 122 Front Clutch (4-Disc Shown)
1 - FRONT CLUTCH RETAINER
2 - CLUTCH PLATES
3 - DRIVING DISCS
Fig. 123 Thick Steel Plate and Waved Snap Ring
1 - WAVED SNAP RING
2 - THICK STEEL PLATE
3 - FRONT CLUTCH RETAINER
21 - 84 AUTOMATIC - 31THRS
CLUTCH - FRONT (Continued)
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(5) Using feeler gauge, measure front clutch clear-
ance (Fig. 125).Front clutch clearance should be
within 1.27-2.79 mm (0.050-0.110 in.) and is not
adjustable.
CLUTCH - REAR
DESCRIPTION
The rear clutch assembly (Fig. 132) is composed of
the input shaft, rear clutch retainer, pressure plate,
clutch plates, driving discs, piston, Belleville spring,
and snap-rings. The Belleville spring acts as a lever
to multiply the force applied on to it by the apply pis-
ton. The increased apply force on the rear clutch
pack, in comparison to the front clutch pack, is
needed to hold against the greater torque load
imposed onto the rear pack. The rear clutch is
directly behind the front clutch and is considered a
driving component.
NOTE: The number of discs and plates may vary
with each engine and vehicle combination.
OPERATION
To apply the clutch, pressure is applied between
the clutch retainer and piston. The fluid pressure is
provided by the oil pump, transferred through the
control valves and passageways, and enters the
clutch through the hub of the reaction shaft support.
With pressure applied between the clutch retainer
and piston, the piston moves away from the clutch
retainer and compresses the clutch pack. This action
applies the clutch pack, allowing torque to flow
through the input shaft into the driving discs, and
into the clutch plates and pressure plate that are
lugged to the clutch retainer. The waved snap-ring is
used to cushion the application of the clutch pack. In
some transmissions, the snap-ring is selective and
used to adjust clutch pack clearance.
When pressure is released from the piston, the
spring returns the piston to its fully released position
and disengages the clutch. The release spring also
helps to cushion the application of the clutch assem-
bly. When the clutch is in the process of being
released by the release spring, fluid flows through a
vent and one-way ball-check-valve located in the
clutch retainer. The check-valve is needed to elimi-
nate the possibility of plate drag caused by centrifu-
gal force acting on the residual fluid trapped in the
clutch piston retainer.
Fig. 124 Front Clutch Waved Snap Ring
1 - WAVED SNAP RING
2 - SCREWDRIVER
3 - FRONT CLUTCH ASSEMBLY
Fig. 125 Measuring Front Clutch Plate Clearance
1 - FEELER GAUGE
2 - FRONT CLUTCH ASSEMBLY
RSAUTOMATIC - 31TH21-85
CLUTCH - FRONT (Continued)
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Page 1583 of 2321
DISASSEMBLY
(1) Remove rear clutch snap ring (Fig. 126) (Fig.
132).
(2) Remove rear clutch pack (Fig. 127).(3) Remove piston/belleville snap ring (Fig. 128).
(4) Remove rear clutch piston and belleville spring
(Fig. 129).
Fig. 126 Rear Clutch Outer Snap Ring
1 - SCREWDRIVER
2 - SNAP RING
3 - REAR CLUTCH ASSEMBLY
Fig. 127 Rear Clutch (4-Disc Shown)
1 - REAR CLUTCH RETAINER
2 - CLUTCH PLATES
3 - THICK STEEL PLATE
4 - SNAP RING (SELECTIVE)
5 - DRIVING DISCS
6 - PRESSURE PLATE
Fig. 128 Piston Spring Waved Snap Ring
1 - REAR CLUTCH RETAINER
2 - PISTON SPRING
3 - SCREWDRIVER
4 - WAVED SNAP RING
Fig. 129 Rear Clutch Piston and Piston Spring
1 - INPUT SHAFT
2 - REAR CLUTCH RETAINER
3 - PISTON SPRING
4 - WAVED SNAP RING
5 - PISTON
6 - PISTON SEALS
21 - 86 AUTOMATIC - 31THRS
CLUTCH - REAR (Continued)
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Page 1584 of 2321
Remove input shaft-to-clutch retainer snap ring
(Fig. 130) (Fig. 131). Press input shaft out of retainer
if necessary.
Fig. 130 Input Shaft Snap Ring
1 - INPUT SHAFT
2 - REAR CLUTCH RETAINER
3 - SNAP RING PLIERS
4 - SNAP RING
Fig. 131 Input Shaft Snap
1 - INPUT SHAFT
2 - REAR CLUTCH RETAINER
3 - SNAP RING
RSAUTOMATIC - 31TH21-87
CLUTCH - REAR (Continued)
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