Chrysler RAM TRUCK 2500 1994 Service Manual page 957

14 - 16 FUEL SYSTEM
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FUEL RETURN LINE
OVERFLOW
VALVE
FUEL INJECTION
PUMP
J9414-102
Fig. 7 Injection Pump Overflow Valve
housing. The purpose of the button is to prime and
bleed air from the fuel system i f the vehicle has run
out of fuel. To prime the system up to the fuel injec­
tor pump, continually press on the button (Fig. 8) un­
t i l resistance is felt. This resistance will indicate that
priming is completed and air has been removed.
I f the primer button feels as i f i t is not pumping,
rotate (crank) the engine approximately 90 degrees.
Continue pumping until air is removed.
FUEL
TRANSFER
PUMP
N
RUBBER
PRIMER
BUTTON
J9414-72
Fig. 8 Fuel Transfer Pump—Manual Operation
For removal and installation procedures of the
transfer pump, refer to Fuel Transfer Pump i n the
Diesel Engine—Component Removal/Installation sec­
tion of this group.
For diagnosis, refer to the Diesel Engine—General
Diagnosis section of this group.
FUEL FILTER/WATER SEPARATOR
The fuel filter/water separator protects the fuel in­
jection pump by removing water and contaminants
from the fuel. The separator filter construction allows
fuel to pass through it, but prevents moisture (water)
from doing so. Moisture collects at the bottom of the
separator filter.
The fuel filter/water separator is located on the left
side of the engine above the starter motor (Fig. 1).
Refer to the maintenance schedules i n Group 0 i n
this manual for the recommended fuel filter/water
separator replacement intervals.
For diagnosis, refer to the Diesel Engine—General
Diagnosis section of this group.
For removal and installation procedures, refer to
the Diesel Engine —Component Removal/Installation
section of this group.
For draining of water, refer to the Diesel
Engine—Component Removal/Installation section of
this group. See Fuel Filter/Water Separator.
FUEL FILTER
Refer to Fuel Filter/Water Separator for informa­
tion.
FUEL FILTER—IN TANK
Refer to Fuel Tank Module—Diesel Engine for re­
moval and installation. This can be found i n the Fuel
Delivery—Diesel Engine section of this group.
FUEL SYSTEM PRESSURE WARNING
WARNING: H I G H - P R E S S U R E F U E L LINES D E L I V E R
D I E S E L F U E L UNDER E X T R E M E P R E S S U R E FROM
T H E INJECTION PUMP TO T H E F U E L I N J E C T O R S .
THIS MAY B E A S HIGH A S 120,000 KPA (17,405 PSI)
. U S E E X T R E M E CAUTION WHEN INSPECTING F O R
H I G H - P R E S S U R E F U E L L E A K S . I N S P E C T F O R
H I G H - P R E S S U R E F U E L L E A K S WITH A S H E E T O F
C A R D B O A R D . HIGH F U E L INJECTION P R E S S U R E
C A N C A U S E P E R S O N A L INJURY IF CONTACT IS
MADE WITH T H E SKIN.
FUEL SYSTEM PRESSURE TEST—DIESEL ENGINE
For fuel pressure tests, refer to the Diesel
Engine—General Diagnosis section of this group.