Jeep Grand Cherokee WK. Manual — part 1259
17. Latch Clips — Type 1: Depending on vehicle
model and engine, 2 different types of safety latch
clips are used. Type-1 (4) is tethered to fuel line
and type-2 is not. A special tool will be necessary
to disconnect fuel line after latch clip is removed.
The latch clip may be used on certain fuel line/
fuel rail connection, or to join fuel lines together.
18. Pry up on latch clip with a screwdriver (3).
19. Slide latch clip toward fuel rail while lifting with
screwdriver.
20. Insert special fuel line removal tool (Snap-On
number FIH 9055-1 or equivalent) into fuel line
(1). Use tool to release locking fingers in end of
line.
21. With special tool still inserted, pull fuel line from
fuel rail.
22. After disconnection, locking fingers will remain
within quick-connect fitting at end of fuel line.
23. Disconnect quick-connect fitting from fuel system
component being serviced.
24. Latch Clips — Type 2: Depending on vehicle
model and engine, 2 different types of safety latch
clips are used. Type-1 is tethered to fuel line and
type-2 is not. A special tool will be necessary to
disconnect fuel line after latch clip is removed.
The latch clip may be used on certain fuel line/
fuel rail connection, or to join fuel lines together.
25. Type 2: Separate and unlatch 2 small arms (1) on
end of clip and swing away from fuel line.
26. Slide latch clip toward fuel rail while lifting with
screwdriver.
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27. Insert special fuel line removal tool (Snap-On
number FIH 9055-1 or equivalent) into fuel line
(1). Use tool to release locking fingers in end of
line.
28. With special tool still inserted, pull fuel line from
fuel rail.
29. After disconnection, locking fingers will remain
within quick-connect fitting at end of fuel line.
30. Disconnect quick-connect fitting from fuel system
component being serviced.
CONNECTING
1. Inspect quick-connect fitting body and fuel system component for damage. Replace as necessary.
2. Prior to connecting quick-connect fitting to component being serviced, check condition of fitting and component.
Clean parts with a lint-free cloth. Lubricate with clean engine oil.
3. Insert quick-connect fitting into fuel tube or fuel system component until built-on stop on fuel tube or component
rests against back of fitting.
4. Continue pushing until a click is felt.
5. Single-tab type fitting: Push new tab down until it locks into place in quick-connect fitting.
6. Verify a locked condition by firmly pulling on fuel tube and fitting (15-30 lbs.).
7. Latch Clip Equipped: Install latch clip (snaps into position). If latch clip will not fit, this indicates fuel line is
not properly installed to fuel rail (or other fuel line). Recheck fuel line connection.
8. Connect negative cable to battery.
9. Start engine and check for leaks.
PUMP-FUEL
DESCRIPTION
Refer to Fuel Pump Module for information.
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MODULE-FUEL PUMP
DESCRIPTION
The fuel pump module assembly (3) is located on top
of fuel tank.
The module assembly (5) contains the following com-
ponents:
•
An internal fuel filter
•
A separate fuel pick-up, or inlet filter (3)
•
A fuel pressure regulator (4)
•
An electric fuel pump (2)
•
A lockring to retain pump module to tank
•
A soft gasket between tank flange and module
•
A fuel gauge sending unit (fuel level sensor) (1)
•
Fuel line connection (6)
If the fuel gauge sending unit , electrical fuel pump,
primary inlet filter, fuel filter or fuel pressure regulator
require service, the fuel pump module must be
replaced.
Electric Fuel Pump
The electric fuel pump is located inside of the fuel pump module. A 12 volt, permanent magnet, electric motor pow-
ers the fuel pump. The electric fuel pump is not a separate, serviceable component.
Fuel Filters
Two fuel filters are used. One is located at the bottom of the fuel pump module. The other is located inside the
module. A separate frame mounted fuel filter is not used with any engine.
Both fuel filters are designed for extended service. They do not require normal scheduled maintenance. Filters
should only be replaced if a diagnostic procedure indicates to do so.
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Fuel Pressure Regulator
The fuel pressure regulator is located within fuel pump module.
Fuel Gauge Sending Unit (Fuel level sensor)
The fuel gauge sending unit (fuel level sensor) is attached to the side of the fuel pump module. The sending unit
consists of a float, an arm, and a variable resistor track (card).
REMOVAL
WARNING: THE FUEL SYSTEM IS UNDER A CONSTANT PRESSURE (EVEN WITH THE ENGINE OFF).
BEFORE SERVICING THE FUEL PUMP MODULE, THE FUEL SYSTEM PRESSURE MUST BE RELEASED.
1. Drain and remove fuel tank. Refer to Fuel Tank
Removal/Installation.
2. Note rotational position of module before attempt-
ing removal. An indexing arrow is located on top of
module for this purpose.
3. Position Special Tool 9340 (3) into notches on out-
side edge of lockring (5).
4. Install 1/2 inch drive breaker bar (1) to tool 9340
(3).
5. Rotate breaker bar counter-clockwise to remove
lockring.
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.
INSTALLATION
CAUTION: Whenever the fuel pump module is serviced, the rubber seal (gasket) must be replaced.
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. Also be sure fuel fitting on top of pump
module is pointed to drivers side of vehicle.
4. Install Special Tool 9340 (3) to lockring.
5. Install 1/2 inch drive breaker (1) into Special Tool
9340 (3).
6. Tighten lockring (clockwise) until all seven notches
have engaged.
7. Install fuel tank. Refer to Fuel Tank Removal/
Installation.
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