Jeep Liberty KJ. Manual — part 1082
INSTALLATION
1. Install the pressure control solenoid (1) and line
pressure sensor (2) into the valve body.
2. Install the screws (6) to hold the pressure control
solenoid (1) and line pressure sensor (2) to the
valve body.
3. Install the electrical connectors to the pressure
control solenoid (1) and the line pressure sensor
(2).
4. Install the valve body into the transmission. (Refer
to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC
- 42RLE/VALVE BODY - INSTALLATION)
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AUTOMATIC TRANSMISSION - 42RLE
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OIL PUMP
DESCRIPTION
The oil pump is located in the pump housing inside
the bell housing of the transmission case. The oil
pump assembly 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 clear-
ance 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).
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AUTOMATIC TRANSMISSION - 42RLE
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3. Remove the pump gears (2, 3) 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). Clearance should be
0.089-0.202 mm (0.0035-0.0079 in.).
6. Measure clearance between outer gear and cres-
cent.
Clearance
should
be
0.060-0.298
mm
(0.0023-0.0117 in.).
7. Measure clearance between inner gear and cres-
cent.
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 reaction
shaft support housing.
10. Install the reaction shaft to the pump housing.
Tighten the bolts to 28 N·m (250 in. lbs.).
11. Remove bolts and carefully separate the housings. Measure the Plastigage following the instructions 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.).
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ASSEMBLY
1. Assemble oil pump as shown
2. Install and torque reaction shaft support-to-oil pump
housing bolts to 28 N·m (250 in. lbs.) torque.
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AUTOMATIC TRANSMISSION - 42RLE
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