Dodge ram truck 3500 1996 Service Manual page 1249

B R
FUEL SYSTEM 14 - 1 5
S E R V I C E P R O C E D U R E S ( C o n t i n u e d )
(13) Start engine and check for leaks.
R E M O V A L A N D I N S T A L L A T I O N
FUEL FILTER/FUEL PRESSURE REGULATOR
If the filter or regulator needs service, the Fuel
Pump Module assembly must be replaced. Refer to
Fuel Pump Module for procedures.
FUEL PUMP RELAY
The fuel pump and automatic shutdown (ASD)
relays are located in the Power Distribution Center
(PDC). The PDC Is located i n the engine compart­
ment (Fig. 21). Refer to label on PDC cover for relay
location. Check the terminals in the PDC relay con­
nector for corrosion or damage before installation.
POWER
D I S T R I B U T I O N
CENTER
( P D C )
J9414-10
Fig. 21 Power Distribution Center
FUEL P U i P MODULE
mmowAL
WARNING: THE FUEL S Y S T E M IS UNDER A CON­
STANT P R E S S U R E (EVEN WITH THE ENGINE OFF).
B E F O R E SERVICING T H E F U E L PUMP MODULE,
THE F U E L SYSTEM P R E S S U R E MUST B E
R E L E A S E D .
CAUTION: Whenever the fuel pump module is ser­
viced, the locknut and gasket must be replaced.
(1) Drain the fuel tank. Refer to Draining Fuel
Tank in the Fuel Tank section of this group.
(2) Remove fuel tank. Refer to the Fuel Tank sec­
tion of this group.
(3) The plastic fuel pump module locknut is
threaded onto the fuel tank (Fig. 22). Install Special
Tool 6856 to the fuel pump module locknut and
remove locknut (Fig. 24). The fuel pump module will
spring up when the locknut is removed.
(4) Remove module from fuel tank.
P L A S T I C F U E L F I L T E R /
L O C K N U T F U E L P R E S S U R E
R E G U L A T O R
P R E S S U R E R E L I E F /
R O L L O V E R V A L V E
F U E L
S U P P L Y
C O N N E C T I O N
T O P O F
F U E L T A N K
A U X I L I A R Y
F U E L S U P P L Y
F I T T I N G
( S O M E E N G I N E S )
, P U M P / G A U G E
- R U B B E R G R O M M E T E L E C . C O N N E C T I O N
F R O N T O F "
T A N K
J9414-32
Fig. 22 Top View of Fuel Pump Module
FLOAT
F U E L G A U G E L O C K I N G
S E N D I N G U N I T T A B S
E L E C T R I C
F U E L P U M P
M O U N T I N G
S C R E W S
I N - T A N K
FUEL FILTER
J 9 4 1 4 - 3 3
Fig. 23 Fuel Pump Module Components—Typical
SPECIAL
TOOL
6 8 5 6
Fig. 24 Locknut Removal/Installation—Typical