2002 JEEP GRAND CHEROKEE Workshop Manual

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Page 1753 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual OPERATION
2C CLUTCH
The 2C clutch is hydraulically applied in second
and fifth gear by pressurized fluid against the 2C
piston. When the 2C clutch is applied, the reverse
sun gear assembly is held or

Page 1754 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual INPUT CLUTCH ASSEMBLY
DESCRIPTION
Three hydraulically applied input clutches are used
to drive planetary components. The underdrive, over-
drive, and reverse clutches are considered input
clutches and

Page 1755 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual When the underdrive clutch is applied, the under-
drive hub drives the input sun gear.
OVERDRIVE CLUTCH
The overdrive clutch is hydraulically applied in
third (direct), fourth, and fifth gears by pres

Page 1756 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual DISASSEMBLY
(1) Remove the reverse reaction plate selective
snap-ring from the input clutch retainer (Fig. 70).
(2) Remove the reverse reaction plate from the
input clutch retainer.
(3) Remove the rev

Page 1757 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (9) Remove the number 2 bearing from the input
clutch hub.
(10) Remove the overdrive clutch wave snap-ring
from the input clutch retainer.
(11) Remove the UD/OD reaction plate tapered
snap-ring from t

(9) Remove the number 2 bearing from the input
clutch hub.
(10) Remove the overdrive clutch wave snap-ring
from the input clutch retainer.
(11) Remove the UD/OD reaction plate tapered
snap-ring from the input clutch retainer.
(12) Remove the UD/OD reaction plate from the
input clutch retainer.
(13) Remove the UD/OD reaction plate flat snap-
ring from the input clutch retainer (Fig. 70).
(14) Remove the underdrive clutch pack from the
input clutch retainer (Fig. 72).
(15) Using Spring Compressor 8251, compress the
UD/OD balance piston and remove the snap-ring
from the input clutch hub (Fig. 71).
(16) Remove the UD/OD balance piston and piston
return spring from the input clutch retainer (Fig. 72).
(17) Remove the underdrive piston from the input
clutch retainer (Fig. 72).NOTE: Both the UD/OD balance piston and the
underdrive piston have seals molded onto them. If
the seal is damaged, do not attempt to install a new
seal onto the piston. The piston/seal must be
replaced as an assembly.
(18) Remove the input clutch retainer tapered
snap-ring.
(19) Separate input clutch retainer from input
clutch hub.
(20) Separate OD/reverse piston from input clutch
hub retainer (Fig. 72).
(21) Remove all seals and o-rings from the input
shaft and input hub. The o-rings on the input hub
are color coded. Be sure to make note of which o-ring
belongs in which location.
ASSEMBLY
(1) Install all new seals and o-rings onto the input
shaft and input hub. The o-rings on the input hub
are color coded. Be sure to install the correct o-ring
in the correct location.
(2) Check the transmission lubrication check valve
located in the input shaft using shop air. The valve
should only allow air flow in one direction. If the
valve allows no air flow, or air flow in both direc-
tions, the valve will need to be replaced.
(3) Lubricate all seals with MopartATF +4, type
9602, prior to installation.
(4) Assemble the OD/reverse piston onto the input
clutch hub (Fig. 73).
(5) Assemble the input clutch retainer onto the
input clutch hub.
(6) Install the input clutch retainer tapered snap-
ring with tapered side up onto the input clutch hub.
Fig. 71 Compressing UD/OD Balance Piston Using
Tool 8251
1 - PRESS
2 - TOOL 8251
3 - BALANCE PISTON
21 - 238 AUTOMATIC TRANSMISSION - 545RFEWJ
INPUT CLUTCH ASSEMBLY (Continued)

Page 1758 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual Fig. 72 Input Clutch Assembly - Part 1
1 - INPUT CLUTCH HUB 11 - UD CLUTCH
2 - O-RING SEALS 12 - PLATE
3 - SEAL 13 - CLUTCH RETAINER
4 - SNAP-RING 14 - SEAL
5 - SNAP-RING 15 - OD/REV PISTON
6 - UD BAL

Page 1759 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual Fig. 73 Input Clutch Assembly - Part I
1 - INPUT CLUTCH HUB 11 - UD CLUTCH
2 - O-RING SEALS 12 - PLATE
3 - SEAL 13 - CLUTCH RETAINER
4 - SNAP-RING 14 - SEAL
5 - SNAP-RING 15 - OD/REV PISTON
6 - UD BAL

Page 1760 of 2199

JEEP GRAND CHEROKEE 2002 WJ / 2.G Workshop Manual (7) Install Piston Guides 8504 into the input clutch
retainer (Fig. 74) and onto the input clutch hub to
guide the inner and outer underdrive piston seals
into position.
(8) Install the underdrive pis

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