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 TM 9-2815-220-24
FUEL SYSTEM ABNORMAL CONDITIONS
0020 00
MALFUNCTION 6: (Continued)
Fuel injection pump deficiencies.
PROBABLE CAUSE
CORRECTIVE ACTION
d. Fuel adjustment improper.
(1) Check engine power (WP 0044, Engine
Run-In) or perform Engine Stall Test
(2) Replace fuel injection pump (WP 0115,
Fuel Injection Pump Assembly
Replacement).
e. Electric fuel shutoff failure (electric circuit
(1) Check solenoid operation as follows :
defective or solenoid failure).
PROCEDURE
OBSERVATION
ANALYSIS
Note audible solenoid "clicking"
Open top grille door.
Audible "clicking"
indicating opening and closing action.
With master switch
indicates normal fuel
"ON", intermittently
shut-off operation.
operate fuel shut-off
switch "ON" and
No audible "clicking"
"OFF" (with manual
indicates solenoid or
control in normal
circuit defective.
engine "ON" position).
PROBABLE CAUSE
CORRECTIVE ACTION
e. (Continued) Electric fuel shutoff failure
(2) Check circuit voltage (refer to pertinent
(electric circuit defective or solenoid
vehicle technical manual).
failure).
(3) Replace fuel injection pump.
f. Manual fuel shut-off malfunction (improper (1) Check manual operation as follows:
control linkage adjustment or internal
failure).
PROCEDURE
OBSERVATION
ANALYSIS
With master switch
If no audible "clicking" is noted.
Manual control is
"ON", hold manual
holding fuel shut-off in
control handle in
"OFF" position and
engine "OFF" position
manual operation is
and intermittently
satisfactory.
operate electric fuel
If audible "clicking" is noticed.
Manual control out of
shut-off switch "ON"
adjustment, or
and "OFF".
defective.
WP 0020 00-6
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