Jeep Wrangler TJ. Manual — part 510
(41) Install the underdrive shaft assembly (1) (Fig.
217).
(42) Install the number 3 thrust washer (1) (Fig.
218) to the underdrive shaft assembly (2). Be sure
five tabs are seated properly.
(43) Install the number 3 thrust plate (3) to the
bottom of the overdrive shaft assembly (1). Retain
with petrolatum or transmission assembly gel (2)
(Fig. 219).
(44) Install the overdrive shaft assembly (1) (Fig.
220).
Fig. 217 Install Underdrive Shaft Assembly
1 - UNDERDRIVE SHAFT ASSEMBLY
2 - #2 NEEDLE BEARING
Fig. 218 Install No. 3 Thrust Washer
1 - #3 THRUST WASHER (NOTE 5 TABS)
2 - UNDERDRIVE SHAFT ASSEMBLY
Fig. 219 Install No. 3 Thrust Plate
1 - OVERDRIVE SHAFT ASSEMBLY
2 - DABS OF PETROLATUM (FOR RETENTION)
3 - #3 THRUST PLATE (NOTE 3 TABS)
Fig. 220 Install Overdrive Shaft Assembly
1 - OVERDRIVE SHAFT ASSEMBLY
2 - #3 THRUST PLATE
3 - #3 THRUST WASHER
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AUTOMATIC TRANSMISSION - 42RLE
TJ
INPUT CLUTCH ASSEMBLY (Continued)
(45) Reinstall overdrive and reverse clutch (Fig.
221). Rechecking these clutch clearances is not
necessary.
INPUT SPEED SENSOR
DESCRIPTION
The Input and Output Speed Sensors (Fig. 222) are
two-wire magnetic pickup devices that generate AC
signals as rotation occurs. They are mounted in the
left side of the transmission case and are considered
primary inputs to the Transmission Control Module
(TCM).
OPERATION
The Input Speed Sensor provides information on
how fast the input shaft is rotating. As the teeth of
the input clutch hub pass by the sensor coil, an AC
voltage is generated and sent to the TCM. The TCM
interprets this information as input shaft rpm.
The Output Speed Sensor generates an AC signal
in a similar fashion, though its coil is excited by rota-
tion of the rear planetary carrier lugs. The TCM
interprets this information as output shaft rpm.
The TCM compares the input and output speed
signals to determine the following:
• Transmission gear ratio
• Speed ratio error detection
• CVI calculation
The TCM also compares the input speed signal and
the engine speed signal to determine the following:
• Torque converter clutch slippage
• Torque converter element speed ratio
REMOVAL
(1) Raise vehicle.
(2) Place a suitable fluid catch pan under the
transmission.
(3) Remove the wiring connector from the input
speed sensor (Fig. 223).
NOTE: The speed sensor bolt has a sealing patch
applied from the factory. Be sure to reuse the same
bolt.
(4) Remove the bolt holding the input speed sensor
to the transmission case.
(5) Remove the input speed sensor from the trans-
mission case.
Fig. 221 Input Clutch Assembly
1 - INPUT CLUTCH ASSEMBLY
2 - OVERDRIVE SHAFT ASSEMBLY
Fig. 222 Input and Output Speed Sensors and
Transmission Range Sensor
1 - INPUT SPEED SENSOR
2 - OUTPUT SPEED SENSOR
3 - TRANSMISSION RANGE SENSOR
Fig. 223 Input Speed Sensor
1 - INPUT SPEED SENSOR
2 - OUTPUT SPEED SENSOR
3 - TRANSMISSION RANGE SENSOR
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AUTOMATIC TRANSMISSION - 42RLE
21 - 131
INPUT CLUTCH ASSEMBLY (Continued)
INSTALLATION
(1) Install the input speed sensor (1) (Fig. 224)into
the transmission case.
NOTE: Before installing the speed sensor bolt, it
will be necessary to replentish the sealing patch on
the bolt using Mopar
T
Lock & Seal Adhesive.
(2) Install the bolt to hold the input speed sensor
into the transmission case. Tighten the bolt to 9 N·m
(80 in.lbs.).
(3) Install the wiring connector onto the input
speed sensor
(4) Verify the transmission fluid level. Add fluid as
necessary.
(5) Lower vehicle.
OIL PUMP
DESCRIPTION
The oil pump is located in the pump housing inside
the bell housing of the transmission case. The oil
pump assembly (Fig. 225) consists of an inner (3) and
outer (2) gear, a housing (1), and a cover that also
serves as the reaction shaft support (6).
OPERATION
As the torque converter rotates, the converter hub
rotates the inner and outer gears. As the gears
rotate,
the
clearance
between
the
gear
teeth
increases in the crescent area, and creates a suction
at the inlet side of the pump. This suction draws
fluid through the pump inlet from the oil pan. As the
clearance between the gear teeth in the crescent area
decreases, it forces pressurized fluid into the pump
outlet and to the valve body.
DISASSEMBLY
(1) Remove the reaction shaft support bolts.
(2) Remove the reaction shaft support(2) from the
pump housing (1) (Fig. 226).
Fig. 224 Input Speed Sensor
1 - INPUT SPEED SENSOR
2 - OUTPUT SPEED SENSOR
3 - TRANSMISSION RANGE SENSOR
Fig. 225 Oil Pump Assembly
1 - PUMP HOUSING
2 - OUTER PUMP GEAR
3 - INNER PUMP GEAR
4 - REACTION SHAFT SUPPORT
5 - SEAL RINGS (4)
6 - REACTION SHAFT
7 - CRESCENT
Fig. 226 Reaction Shaft Support
1 - PUMP HOUSING
2 - REACTION SHAFT SUPPORT
3 - PUMP GEARS
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INPUT SPEED SENSOR (Continued)
(3) Remove the pump gears (2, 3) (Fig. 227) and
check for wear and damage on pump housing (1) and
gears (2, 3).
(4) Re-install the gears and check clearances.
(5) Measure the clearance between the outer gear
(1) and the pump pocket (2) (Fig. 228). Clearance
should be 0.089-0.202 mm (0.0035-0.0079 in.).
(6) Measure clearance between outer gear and
crescent.
Clearance
should
be
0.060-0.298
mm
(0.0023-0.0117 in.).
(7) Measure clearance between inner gear and
crescent.
Clearance
should
be
0.093-0.385
mm
(0.0036-0.0151 in.).
(8) Position an appropriate piece of Plastigage
across both pump gears.
(9) Align the Plastigage to a flat area on the reac-
tion shaft support housing.
(10) Install the reaction shaft to the pump hous-
ing. Tighten the bolts to 27 N·m (20 ft. lbs.).
(11) Remove bolts and carefully separate the hous-
ings. Measure the Plastigage following the instruc-
tions supplied.
(12) Clearance between outer gear side and the
reaction shaft support should be 0.020-0.046 mm
(0.0008-0.0018 in.). Clearance between inner gear
side and the reaction shaft support should be 0.020-
0.046 mm (0.0008-0.0018 in.).
ASSEMBLY
(1) Assemble oil pump as shown (Fig. 229)
(2) Install and torque reaction shaft support-to-oil
pump housing bolts to 28 N·m (20 ft. lbs.) torque.
Fig. 227 Oil Pump Assembly
1 - PUMP HOUSING
2 - OUTER PUMP GEAR
3 - INNER PUMP GEAR
4 - REACTION SHAFT SUPPORT
5 - SEAL RINGS (4)
6 - REACTION SHAFT
7 - CRESCENT
Fig. 228 Measure Outer Gear to Pocket
1 - OUTER GEAR
2 - POCKET
Fig. 229 Oil Pump Assembly
1 - PUMP HOUSING
2 - OUTER PUMP GEAR
3 - INNER PUMP GEAR
4 - REACTION SHAFT SUPPORT
5 - SEAL RINGS (4)
6 - REACTION SHAFT
7 - CRESCENT
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AUTOMATIC TRANSMISSION - 42RLE
21 - 133
OIL PUMP (Continued)
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