TM-9-2815-220-24
AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines
TECHNICAL MANUAL; UNIT, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL FOR AVDS-1790 2CA, 2DA and 2DR Air-Cooled 12-Cylinder Diesel Engines
TM-9-2815-220-24 - Page 148 of 1563
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
(WP 0041).
(2) Replace fuel injection pump (WP 0115,
Fuel Injection Pump Assembly
Replacement).
e. Electric fuel shutoff failure (electric circuit
defective or solenoid failure).
(1) Check solenoid operation as follows :
PROCEDURE
OBSERVATION
ANALYSIS
Audible "clicking"
indicates normal fuel
shut-off operation.
Open top grille door.
With master switch
"ON", intermittently
operate fuel shut-off
switch "ON" and
"OFF" (with manual
control in normal
engine "ON" position).
Note audible solenoid "clicking"
indicating opening and closing action.
No audible "clicking"
indicates solenoid or
circuit defective.
PROBABLE CAUSE
CORRECTIVE ACTION
e. (Continued) Electric fuel shutoff failure
(electric circuit defective or solenoid
failure).
(2) Check circuit voltage (refer to pertinent
vehicle technical manual).
(3) Replace fuel injection pump.
f. Manual fuel shut-off malfunction (improper
control linkage adjustment or internal
failure).
(1) Check manual operation as follows:
PROCEDURE
OBSERVATION
ANALYSIS
If no audible "clicking" is noted.
Manual control is
holding fuel shut-off in
"OFF" position and
manual operation is
satisfactory.
With master switch
"ON", hold manual
control handle in
engine "OFF" position
and intermittently
operate electric fuel
shut-off switch "ON"
and "OFF".
If audible "clicking" is noticed.
Manual control out of
adjustment, or
defective.
WP 0020 00-6
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