Jeep Liberty KJ. Manual — part 950
MODULE-FUEL PUMP
DESCRIPTION
The fuel pump module assembly (2) is located on top of the fuel tank. The complete assembly contains the follow-
ing components:
•
A fuel pressure regulator
•
A built-in primary fuel filter
•
A separate fuel pick-up, or inlet filter
•
An electric fuel pump
•
A lockring to retain pump module to tank
•
A soft gasket between tank flange and module
•
A fuel gauge sending unit (fuel level sensor)
•
A fuel line connection
If the electrical fuel pump, primary inlet filter or fuel pressure regulator require service, the fuel pump module must
be replaced.
OPERATION
Refer to Fuel Pump, Inlet Filter, Fuel Pressure Regulator and Fuel Gauge Sending Unit.
REMOVAL
WARNING: The fuel system may be under a constant pressure (even with the engine off). Before servicing
the fuel pump module, the fuel system pressure must be released.
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FUEL DELIVERY - 3.7L GAS
KJ
The fuel pump module (2) and pump module lock ring (1) are located on the top of the fuel tank.
A typical fuel pump module is displayed in the
graphic.
1. Drain and remove fuel tank. (Refer to 14 - FUEL
SYSTEM/FUEL
DELIVERY/FUEL
TANK
-
REMOVAL)
2. Note rotational position of module before attempt-
ing removal. An indexing arrow is located on top of
module for this purpose.
3. Position Lockring Remover/Installer 9340 (3) into
notches on outside edge of lockring (5).
4. Install 1/2 inch drive breaker bar (1) to Lockring
Remover/Installer 9340 (3).
5. Rotate breaker bar counterclockwise to remove
lockring (5).
6. Remove lockring. The module will spring up slightly
when lockring is removed.
7. Remove module from fuel tank. Be careful not to
bend float arm while removing.
KJ
FUEL DELIVERY - 3.7L GAS
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INSTALLATION
A typical fuel pump module is displayed in the
graphic.
1. Using a new seal (gasket), position fuel pump mod-
ule into opening in fuel tank.
2. Position lockring (5) over top of fuel pump module.
3. Rotate module until embossed alignment arrow
points to center alignment mark. This step must be
performed to prevent float from contacting side of
fuel tank.
4. Install Lockring Remover/Installer 9340 (3) to lock-
ring.
5. Install 1/2 inch drive breaker (1) into Lockring
Remover/Installer 9340 (3).
6. Tighten lockring (clockwise) until all seven notches
have engaged.
7. Install fuel tank. (Refer to 14 - FUEL SYSTEM/
FUEL DELIVERY/FUEL TANK - INSTALLATION)
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FUEL DELIVERY - 3.7L GAS
KJ
RAIL-FUEL
DESCRIPTION
The fuel injector rail (3) is mounted to the intake man-
ifold. It is used to mount the fuel injectors to the
engine. The rail is equipped with a test port to check/
test fuel system pressure.
The rail is equipped with a test port (2) to check/test
fuel system pressure.
A fuel rail mounted, fuel damper is not used with this
engine.
OPERATION
High pressure fuel from the fuel pump is routed to the fuel rail. The fuel rail then supplies the necessary fuel to each
individual fuel injector.
A quick-connect fitting with a safety latch is used to attach the fuel line to the fuel rail.
The fuel rail is not repairable.
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FUEL DELIVERY - 3.7L GAS
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