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
