2002 JEEP LIBERTY Transmission is removal

mounting bracket displayed in (Fig. 6) is a typical
bracket and may/may not be applicable to this model
vehicle.
(9) Remove servo from mounting bracket. While
removing, note orientation of servo to bracket.INSTALLATION
(1) Position servo to mounting bracket.
(2) Align hole in cable connector with hole in servo
pin. Install cable-to-servo retaining clip.
(3) Insert servo mounting studs through holes in
servo mounting bracket.
(4) Install servo-to-mounting bracket nuts and
tighten. Refer to torque specifications.
(5) Install servo mounting bracket-to-body nuts
and tighten. Refer to torque specifications.
(6) Connect vacuum line at servo.
(7) Connect electrical connector at servo.
(8) Connect servo cable to throttle body. Refer to
servo Cable Removal/Installation.
(9) Install coolant bottle.
(10) Connect negative battery cable to battery.
(11) Before starting engine, operate accelerator
pedal to check for any binding.
SWITCH
DESCRIPTION
There are two separate switch pods that operate
the speed control system. The steering-wheel-
mounted switches use multiplexed circuits to provide
inputs to the PCM for ON, OFF, RESUME, ACCEL-
ERATE, SET, DECEL and CANCEL modes. Refer to
the owner's manual for more information on speed
control switch functions and setting procedures.
The individual switches cannot be repaired. If one
switch fails, the entire switch module must be
replaced.
OPERATION
When speed control is selected by depressing the
ON, OFF switch, the PCM allows a set speed to be
stored in its RAM for speed control. To store a set
speed, depress the SET switch while the vehicle is
moving at a speed between approximately 35 and 85
mph. In order for the speed control to engage, the
brakes cannot be applied, nor can the gear selector
be indicating the transmission is in Park or Neutral.
The speed control can be disengaged manually by:
²Stepping on the brake pedal
²Depressing the OFF switch
²Depressing the CANCEL switch.
The speed control can be disengaged also by any of
the following conditions:
²An indication of Park or Neutral
²The VSS signal increases at a rate of 10 mph
per second (indicates that the co-efficient of friction
between the road surface and tires is extremely low)
²Depressing the clutch pedal.
²Excessive engine rpm (indicates that the trans-
mission may be in a low gear)
Fig. 5 SPEED CONTROL SERVO
1-9T9FITTING
2 - VACUUM LINE
3 - SERVO BRACKET MOUNTING NUTS
4 - SERVO MOUNTING BRACKET
5 - SERVO
6 - SERVO ELECTRICAL CONNECTOR
Fig. 6 SERVO CABLE CLIP REMOVE/INSTALL
TYPICAL
1 - SERVO MOUNTING NUTS (2)
2 - SERVO
3 - CABLE RETAINING CLIP
4 - SERVO CABLE AND SLEEVE
KJSPEED CONTROL 8P - 5
SERVO (Continued)

²Normally Closed Terminal- The normally
closed terminal (87A) is connected to the low speed
brush of the front wiper motor through a front wiper
high/low relay low speed output circuit, and is con-
nected to the low speed brush whenever the relay is
de-energized.
The wiper high/low relay can be diagnosed using
conventional diagnostic tools and methods.
DIAGNOSIS AND TESTING - WIPER HIGH/LOW
RELAY
The wiper high/low relay (Fig. 26) is located in the
Power Distribution Center (PDC) in the engine com-
partment near the battery. Refer to the appropriate
wiring information. The wiring information includes
wiring diagrams, proper wire and connector repair
procedures, details of wire harness routing and
retention, connector pin-out information and location
views for the various wire harness connectors, splices
and grounds.
(1) Remove the wiper high/low relay from the
PDC. (Refer to 8 - ELECTRICAL/WIPERS/WASH-
ERS/WIPER HIGH/LOW RELAY - REMOVAL).
(2) A relay in the de-energized position should
have continuity between terminals 87A and 30, and
no continuity between terminals 87 and 30. If OK, go
to Step 3. If not OK, replace the faulty relay.
(3) Resistance between terminals 85 and 86 (elec-
tromagnet) should be 75   8 ohms. If OK, go to Step
4. If not OK, replace the faulty relay.
(4) Connect a battery to terminals 85 and 86.
There should now be continuity between terminals30 and 87, and no continuity between terminals 87A
and 30. If OK, reinstall the relay and use a DRBIIIt
scan tool to perform further testing. Refer to the
appropriate diagnostic information.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the cover from the Power Distribution
Center (PDC) (Fig. 27).
(3) Remove the wiper high/low relay by grasping it
firmly and pulling it straight out from the receptacle
in the PDC.
INSTALLATION
(1) Position the wiper high/low relay to the proper
receptacle in the Power Distribution Center (PDC)
(Fig. 27).
(2) Align the wiper high/low relay terminals with
the terminal cavities in the PDC receptacle.
(3) Push firmly and evenly on the top of the wiper
high/low relay until the terminals are fully seated in
the terminal cavities in the PDC receptacle.
(4) Reinstall the cover onto the PDC.
(5) Reconnect the battery negative cable.
Fig. 26 ISO Micro Relay
30 - COMMON FEED
85 - COIL GROUND
86 - COIL BATTERY
87 - NORMALLY OPEN
87A - NORMALLY CLOSED
Fig. 27 Power Distribution Center
1 - FUEL PUMP RELAY
2 - STARTER MOTOR RELAY
3 - BLOWER MOTOR RELAY
4 - A/C COMPRESSOR CLUTCH RELAY
5 - OXYGEN SENSOR DOWNSTREAM RELAY
6 - AUTO SHUT DOWN RELAY
7-SPARE
8-SPARE
9a - (M/T) CLUTCH INTERLOCK RELAY
9b - (A/T) TRANSMISSION CONTROL RELAY
10 - SPARE
11 - WIPER HIGH/LOW RELAY
12 - WIPER ON/OFF RELAY
8R - 24 FRONT WIPERS/WASHERSKJ
WIPER HIGH/LOW RELAY (Continued)

DIAGNOSIS AND TESTING - WIPER ON/OFF
RELAY
The wiper on/off relay (Fig. 29) is located in the
Power Distribution Center (PDC) in the engine com-
partment near the battery. Refer to the appropriate
wiring information. The wiring information includes
wiring diagrams, proper wire and connector repair
procedures, details of wire harness routing and
retention, connector pin-out information and location
views for the various wire harness connectors, splices
and grounds.
(1) Remove the wiper on/off relay from the PDC.
(Refer to 8 - ELECTRICAL/WIPERS/WASHERS/
WIPER ON/OFF RELAY - REMOVAL).
(2) A relay in the de-energized position should
have continuity between terminals 87A and 30, and
no continuity between terminals 87 and 30. If OK, go
to Step 3. If not OK, replace the faulty relay.
(3) Resistance between terminals 85 and 86 (elec-
tromagnet) should be 75   8 ohms. If OK, go to Step
4. If not OK, replace the faulty relay.
(4) Connect a battery to terminals 85 and 86.
There should now be continuity between terminals
30 and 87, and no continuity between terminals 87A
and 30. If OK, reinstall the relay and use a DRBIIIt
scan tool to perform further testing. Refer to the
appropriate diagnostic information.
REMOVAL
(1) Disconnect and isolate the battery negative
cable.
(2) Remove the cover from the Power Distribution
Center (PDC) (Fig. 30).
(3) Remove the wiper on/off relay by grasping it
firmly and pulling it straight out from the receptacle
in the PDC.
INSTALLATION
(1) Position the wiper on/off relay to the proper
receptacle in the Power Distribution Center (PDC)
(Fig. 30).
(2) Align the wiper on/off relay terminals with the
terminal cavities in the PDC receptacle.
(3) Push firmly and evenly on the top of the wiper
on/off relay until the terminals are fully seated in the
terminal cavities in the PDC receptacle.
(4) Reinstall the cover onto the PDC.
(5) Reconnect the battery negative cable.
Fig. 29 ISO Micro Relay
30 - COMMON FEED
85 - COIL GROUND
86 - COIL BATTERY
87 - NORMALLY OPEN
87A - NORMALLY CLOSED
Fig. 30 Power Distribution Center
1 - FUEL PUMP RELAY
2 - STARTER MOTOR RELAY
3 - BLOWER MOTOR RELAY
4 - A/C COMPRESSOR CLUTCH RELAY
5 - OXYGEN SENSOR DOWNSTREAM RELAY
6 - AUTO SHUT DOWN RELAY
7-SPARE
8-SPARE
9a - (M/T) CLUTCH INTERLOCK RELAY
9b - (A/T) TRANSMISSION CONTROL RELAY
10 - SPARE
11 - WIPER HIGH/LOW RELAY
12 - WIPER ON/OFF RELAY
8R - 26 FRONT WIPERS/WASHERSKJ
WIPER ON/OFF RELAY (Continued)

NOTE: Recheck bolt torque for engine lift plate
before removing engine.
(30) Secure the left and right engine wiring har-
nesses away from engine.
(31) Raise vehicle.
(32) Disconnect oxygen sensor wiring.
(33) Disconnect crankshaft postion sensor.
(34) Disconnect the engine block heater power
cable, if equipped.
(35) Disconnect the front propshaft at the front
differential and secure out of way.
NOTE: It is necessary to disconnect the front prop-
shaft for access to the starter and left side exhaust
flange.
(36) Remove the starter.
(37) Remove the ground straps from the left and
right side of the block.
(38) Disconnect the right and left exhaust pipes at
the manifolds and from the crossover, and remove
from the vehicle.
NOTE: The exhaust clamps at the manifolds cannot
be reused. New clamps must be used or leaks may
occur.
NOTE: For manual transmission vehicles, the trans-
mission must be removed from the vehicle, before
the engine can be removed. The manual transmis-
sion will contact the floorpan before the engine
clears the motor mounts, so it must be removed.
(39) Remove the structural cover.
(40) Remove torque convertor bolts, and mark
location for reassembly.
(41) Remove transmission bellhousing to engine
bolts.
(42) Loosen left and right engine mount thru bolts.
NOTE: It is not necessary to completely remove
engine mount thru bolts, for engine removal.
(43) Lower the vehicle.
(44) Support the transmission with a suitable jack.
(45) Connect a suitable engine hoist to the engine
lift plate.
(46) Remove engine from vehicle.
INSTALLATION
(1) Position the engine in the vehicle.
(2) Install both left and right side engine mounts
onto engine.
(3) Raise the vehicle.(4) Install the transmission bellhousing to engine
mounting bolts. Tighten the bolts to 41 N´m (30ft.
lbs.).
(5) Tighten the engine mount thru bolts.
(6) Install the torque convertor bolts.
(7) Connect the ground straps on the left and right
side of the engine.
(8) Install the starter.
(9) Connect the crankshaft position sensor.
(10) Install the engine block heater power cable, if
equipped.
CAUTION: The structural cover requires a specific
torque sequence. Failure to follow this sequence
may cause severe damage to the cover.
(11) Install the structural cover.
NOTE: New clamps must be used on exhaust man-
ifold flanges. Failure to use new clamps may result
in exhaust leaks.
(12) Install the left and right exhaust pipes.
(13) Connect the left and right oxygen sensors.
(14) Lower vehicle.
(15) Remove the engine lift plate.
(16) Connect the knock sensors.
(17) Connect the engine to body ground straps at
the left side of the cowl.
(18) Install the intake manifold.
(19) Install the engine oil dipstick tube.
(20) Install the power brake booster vacuum hose.
(21) Install the breather hoses.
(22) Install the PCV hose.
(23) Install the fuel rail.
(24) Install the coil over plugs.
(25) Connect the engine wiring harness at the fol-
lowing points:
²Intake air temperature (IAT) sensor
²Fuel Injectors
²Throttle Position (TPS) Switch
²Idle Air Control (IAC) Motor
²Engine Oil Pressure Switch
²Engine Coolant Temperature (ECT) Sensor
²Manifold Absolute Pressure MAP) Sensor
²Camshaft Position (CMP) Sensor
²Coil Over Plugs
²Crankshaft Position Sensor
(26) Connect lower radiator hose.
(27) Connect upper radiator hose.
(28) Connect throttle and speed control cables.
(29) Install the heater hose assembly.
(30) Install coolant recovery bottle.
(31) Install the power steering pump.
(32) Install the generator.
(33) Install the A/C compressor.
(34) Install the drive belt.
KJENGINE - 3.7L 9 - 11
ENGINE - 3.7L (Continued)

CRANKSHAFT OIL SEAL -
REAR
REMOVAL
NOTE: This procedure can be performed in vehicle.
(1) If being preformed in vehicle, remove the
transmission.
(2) Remove the flexplate (Refer to 9 - ENGINE/
ENGINE BLOCK/FLEX PLATE - REMOVAL).
NOTE: The crankshaft oil seal CAN NOT be reused
after removal.
NOTE: The crankshaft rear oil seal remover Special
Tool 8506 must be installed deeply into the seal.
Continue to tighten the removal tool into the seal
until the tool can not be turned farther. Failure to
install tool correctly the first time will cause tool to
pull free of seal without removing seal from engine.
(3) Using Special Tool 8506 (Fig. 48), remove the
crankshaft rear oil seal.
INSTALLATION
(1) Position the magnetic seal guide Special Tool
8349±2 (Fig. 49) onto the crankshaft rear face. Then
position the crankshaft rear oil seal onto the guide.(2) Using Special Tools 8349 Crankshaft Rear Oil
Seal Installer and C-4171 Driver Handle (Fig. 50),
with a hammer, tap the seal into place. Continue to
tap on the driver handle until the seal installer seats
against the cylinder block crankshaft bore.
(3) Install the flexplate.
(4) Install the transmission.
Fig. 48 Crankshaft Rear Oil Seal Removal
1 - REAR CRANKSHAFT SEAL
2 - SPECIAL TOOL 8506
Fig. 49 Crankshaft Rear Oil Seal Guide Special Tool
8349±2 and Oil
1 - REAR CRANKSHAFT SEAL
2 - SPECIAL TOOL 8349±2 GUIDE
Fig. 50 Crankshaft Rear Oil Seal Installation
1 - REAR CRANKSHAFT SEAL
2 - SPECIAL TOOL 8349±1 INSTALLER
3 - SPECIAL TOOL C-4171 HANDLE
9 - 48 ENGINE - 3.7LKJ

FLEX PLATE
REMOVAL
(1) Remove the transmission.
(2) Remove the bolts and flexplate.
INSTALLATION
(1) Position the flexplate onto the crankshaft and
install the bolts hand tight.
(2) Tighten the flexplate retaining bolts to 95 N´m
(70 ft. lbs.) in the sequence shown (Fig. 51).
(3) Install the transmission.
PISTON & CONNECTING ROD
DESCRIPTION
CAUTION: Do not use a metal stamp to mark con-
necting rods as damage may result, instead use ink
or a scratch awl.
The pistons are made of a high strength aluminum
alloy. The top ring groove is coated with a anti-seize
coating. The connecting rods are made of forged pow-
dered metal, with a ªfractured capº design. A full
floating piston pin is used to attach the piston to the
connecting rod (Fig. 52).
1 Connecting Rod
2 Piston
3 Piston Pin
4 Oil Slinger Slot
STANDARD PROCEDURE
CONNECTING ROD BEARING - FITTING
Inspect the connecting rod bearings for scoring and
bent alignment tabs. Check the bearings for normal
wear patterns, scoring, grooving, fatigue and pitting.
Replace any bearing that shows abnormal wear.
Inspect the connecting rod journals for signs of
scoring, nicks and burrs.
Misaligned or bent connecting rods can cause
abnormal wear on pistons, piston rings, cylinder
walls, connecting rod bearings and crankshaft con-
necting rod journals. If wear patterns or damage to
any of these components indicate the probability of a
misaligned connecting rod, inspect it for correct rod
alignment. Replace misaligned, bent or twisted con-
necting rods.
(1) Wipe the oil from the connecting rod journal.
(2) Lubricate the upper bearing insert and install
in connecting rod.
(3) Use piston ring compressor and Guide Pins
Special Tool 8507 to install the rod and piston assem-
blies. The oil slinger slots in the rods must face front
of the engine. The ªFº's near the piston wrist pin
bore should point to the front of the engine.
(4) Install the lower bearing insert in the bearing
cap. The lower insert must be dry. Place strip of Plas-
tigage across full width of the lower insert at the cen-
ter of bearing cap. Plastigage must not crumble in
use. If brittle, obtain fresh stock.
(5) Install bearing cap and connecting rod on the
journal and tighten bolts to 27 N´m (20 ft. lbs.) plus a
Fig. 51 Flexplate Tightening Sequence
1 - FLEXPLATE
Fig. 52 PISTON AND ROD ASSEMBLY
KJENGINE - 3.7L 9 - 49

VIBRATION DAMPER
REMOVAL
(1) Disconnect negative cable from battery.
(2) Remove accessory drive belt (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL).
NOTE: Transmission cooler line snaps into shroud
lower right hand corner.
(3) Remove crankshaft damper bolt.
(4) Remove damper using Special Tools 8513
Insert and 1026 Three Jaw Puller (Fig. 62).
Fig. 59 Side RailÐInstallation
1 - SIDE RAIL END
Fig. 60 Upper and Intermediate RingsÐInstallation
Fig. 61 Piston Ring End Gap Position
1 - SIDE RAIL UPPER
2 - NO. 1 RING GAP
3 - PISTON PIN
4 - SIDE RAIL LOWER
5 - NO. 2 RING GAP AND SPACER EXPANDER GAP
Fig. 62 Crankshaft DamperÐRemoval
1 - SPECIAL TOOL 8513 INSERT
2 - SPECIAL TOOL 1026
9 - 54 ENGINE - 3.7LKJ
PISTON RINGS (Continued)

INSTALLATION
CAUTION: To prevent severe damage to the Crank-
shaft, Damper or Special Tool 8512, thoroughly
clean the damper bore and the crankshaft nose
before installing Damper.
(1) Align crankshaft damper slot with key in
crankshaft. Slide damper onto crankshaft slightly.
CAUTION: Special Tool 8512A, is assembled in a
specific sequence. Failure to assemble this tool in
this sequence can result in tool failure and severe
damage to either the tool or the crankshaft.
(2) Assemble Special Tool 8512±A as follows, The
nut is threaded onto the shaft first. Then the roller
bearing is placed onto the threaded rod (The hard-
ened bearing surface of the bearingMUSTface the
nut). Then the hardened washer slides onto the
threaded rod (Fig. 63). Once assembled coat the
threaded rod's threads with MopartNickel Anti-
Seize or (Loctite No. 771).
(3) Using Special Tool 8512A, press damper onto
crankshaft (Fig. 64).
(4) Install then tighten crankshaft damper bolt to
175 N´m (130 ft. lbs.).
(5) Install accessory drive belt (Refer to 7 - COOL-
ING/ACCESSORY DRIVE/DRIVE BELTS - INSTAL-
LATION).
(6) Connect negative cable to battery.
STRUCTURAL COVER
DESCRIPTION
The structural dust cover is made of die cast alu-
minum and joins the lower half of the transmission
bell housing to the engine bedplate.
OPERATION
The structural cover provides additional power-
train stiffness and reduces noise and vibration.
REMOVAL
(1) Raise vehicle on hoist.
(2) Remove the bolts retaining structural cover
(Fig. 65).
(3) Remove the structural cover.
INSTALLATION
CAUTION: The structural cover must be installed as
described in the following steps. Failure to do so
will cause severe damage to the cover.
(1) Position the structural cover in the vehicle.
(2) Install all bolts retaining the cover-to-engine.
DO NOT tighten the bolts at this time.
(3) Install the cover-to-transmission bolts. Do NOT
tighten at this time.
Fig. 63 Proper Assembly Method for Special Tool
8512±A
1 - BEARING
2 - NUT
3 - THREADED ROD
4 - BEARING HARDENED SURFACE (FACING NUT)
5 - HARDENED WASHER
Fig. 64 Crankshaft Damper Installation
1 - SPECIAL TOOL 8512A
KJENGINE - 3.7L 9 - 55
VIBRATION DAMPER (Continued)