TM-9-2320-387-24-1
TRUCK, UTILITY: S250 SHELTER CARRIER, 4X4, M1113
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE, VOLUME 1
DECEMBER 1997
CHANGE 1
TM-9-2320-387-24-1 - Page 164 of 1205
TM
9-2320-387-24-l
FUEL SYSTEM
KNOWN INFO
I
FUEL LINES, PUMP AND
FILTER OK
POSSIBLE
PROBLEMS
INJECTION
PUMP
INJECTORS
EXHAUST
RESTRICTED
KNOWN INFO
FUEL PUMP OK
FUEL FILTER OK
POSSIBLE
PROBLEMS
INJECTION
PUMP
INJECTORS
RETURN CHECK VALVE
INJECTION
PUMP OK
POSSIBLE
PROBLEMS
INJECTORS
AIR CLEANER
PUMP TIMING
CDR VALVE
RETURN
CHECK VALVE
IS MAXIMUM GOVERNOR
SPEED
4,000 RPM NO LOAD?
3.600 LOADED?
DIAGNOSTIC FLOWCHART
TEST OPTIONS
1
STEIICE-R
TEST 10 (Page 2-490)
REASON
FOR QUESTION
~
Verify governor speed.
IS ENGINE POWER OK?
r OPTIONS
1. STEIICE-R
TEST 13
(Page 2-492)
2. ROAD TEST
REASON
FOR QUESTION
Some fuel system faults and
bad fuel may cause low power
IS THE EXHAUST COLORLESS?
ST OPTIONS
VISUAL
1
TE!
REASON
FOR QUESTlON
Exhaust smoke may indicate
conditions such as oil, water.
or excessive
fuel entering
the cylinders.
L
2-104
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