Dodge Ram Truck 1500-2500-3500. Manual — part 1457
MODULE - FUEL PUMP
DESCRIPTION
The fuel pump module assembly is located on the top of the fuel tank. The complete assembly contains the fol-
lowing components:
•
A combination fuel filter/fuel pressure regulator
•
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)
•
Fuel line connection
The fuel gauge sending unit may be serviced separately. If the electrical fuel pump, primary inlet filter, fuel filter or
fuel pressure regulator require service, the fuel pump module must be replaced.
OPERATION
Refer to Fuel Pump, Inlet Filter, Fuel 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.
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 (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.
14 - 16
FUEL DELIVERY - GAS
DR/DH
INSTALLATION
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.
RAIL - FUEL
DESCRIPTION
The fuel injector rail is used to mount the fuel injectors to the engine.
OPERATION
High pressure 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 clip is used to attach the fuel line to the fuel rail.
The fuel rail is not repairable.
CAUTION: The left and right sections of the fuel rail are connected with either a flexible connecting hose, or
joints. Do not attempt to separate the rail halves at these connecting hose or joints. Due to the design of
the connecting hose or joint, it does not use any clamps. Never attempt to install a clamping device of any
kind to the hose or joint. When removing the fuel rail assembly for any reason, be careful not to bend or
kink the connecting hose or joint.
REMOVAL
3.7L V-6
WARNING: THE FUEL SYSTEM IS UNDER CONSTANT PRESSURE EVEN WITH ENGINE OFF. BEFORE SER-
VICING FUEL RAIL, FUEL SYSTEM PRESSURE MUST BE RELEASED.
CAUTION: The left and right fuel rails are replaced as an assembly. Do not attempt to separate rail halves
at connector tubes. Due to design of tubes, it does not use any clamps. Never attempt to install a clamping
device of any kind to tubes. When removing fuel rail assembly for any reason, be careful not to bend or
kink tubes.
DR/DH
FUEL DELIVERY - GAS
14 - 17
1. Remove fuel tank filler tube cap.
2. Perform Fuel System Pressure Release Procedure.
(Refer to 14 - FUEL SYSTEM/FUEL DELIVERY -
STANDARD PROCEDURE)
3. Remove negative battery cable at battery.
4. Remove air duct at throttle body air box.
5. Remove air box at throttle body.
6. Remove air resonator mounting bracket at front of
throttle body (2 bolts).
7. Disconnect fuel line latch clip and fuel line at fuel
rail. A special tool will be necessary for fuel line
disconnection. (Refer to 14 - FUEL SYSTEM/FUEL
DELIVERY/QUICK CONNECT FITTING - STAN-
DARD PROCEDURE)
8. Remove necessary vacuum lines at throttle body.
9. Disconnect electrical connectors at all 6 fuel injec-
tors. To remove connector refer to. Push red col-
ored slider away from injector (1). While pushing
slider, depress tab (2) and remove connector (3)
from injector. The factory fuel injection wiring har-
ness is numerically tagged (INJ 1, INJ 2, etc.) for
injector position identification. If harness is not
tagged, note wiring location before removal.
10. Disconnect electrical connectors at all throttle body sensors.
11. Remove 6 ignition coils. (Refer to 8 - ELECTRICAL/IGNITION CONTROL/IGNITION COIL - REMOVAL)
12. Remove 4 fuel rail mounting bolts (1).
13. Gently rock and pull left side of fuel rail until fuel
injectors just start to clear machined holes in cyl-
inder head. Gently rock and pull right side of rail
until injectors just start to clear cylinder head
holes. Repeat this procedure (left/right) until all
injectors have cleared cylinder head holes.
14. Remove fuel rail (with injectors attached) from
engine.
15. If fuel injectors are to be removed, (Refer to 14 -
FUEL SYSTEM/FUEL INJECTION/FUEL INJEC-
TOR - REMOVAL).
4.7L V-8
WARNING: THE FUEL SYSTEM IS UNDER CONSTANT PRESSURE EVEN WITH ENGINE OFF. BEFORE SER-
VICING FUEL RAIL, FUEL SYSTEM PRESSURE MUST BE RELEASED.
14 - 18
FUEL DELIVERY - GAS
DR/DH
CAUTION: The left and right fuel rails are replaced as an assembly. Do not attempt to separate rail halves
at connector tubes. Due to design of tubes, it does not use any clamps. Never attempt to install a clamping
device of any kind to tubes. When removing fuel rail assembly for any reason, be careful not to bend or
kink tubes.
1. Remove fuel tank filler tube cap.
2. Perform Fuel System Pressure Release Procedure.
(Refer to 14 - FUEL SYSTEM/FUEL DELIVERY -
STANDARD PROCEDURE)
3. Remove negative battery cable at battery.
4. Remove air duct at throttle body air box.
5. Remove air box at throttle body.
6. Remove air resonator mounting bracket at front of
throttle body (2 bolts).
7. Disconnect fuel line latch clip and fuel line at fuel
rail. A special tool will be necessary for fuel line
disconnection. (Refer to 14 - FUEL SYSTEM/FUEL
DELIVERY/QUICK CONNECT FITTING - STAN-
DARD PROCEDURE)
8. Remove necessary vacuum lines at throttle body.
9. Disconnect electrical connectors at all 8 fuel injec-
tors. To remove connector refer to. Push red col-
ored slider away from injector (1). While pushing
slider, depress tab (2) and remove connector (3)
from injector. The factory fuel injection wiring har-
ness is numerically tagged (INJ 1, INJ 2, etc.) for
injector position identification. If harness is not
tagged, note wiring location before removal.
10. Disconnect electrical connectors at all throttle body sensors.
11. Remove 8 ignition coils. (Refer to 8 - ELECTRICAL/IGNITION CONTROL/IGNITION COIL - REMOVAL)
DR/DH
FUEL DELIVERY - GAS
14 - 19
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст