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TM 9-2815-220-24
FUEL SYSTEM ABNORMAL CONDITIONS
THIS WORK PACKAGE COVERS:
Troubleshooting Table and Diagnostic Tests
INITIAL SETUP:
Tools:
Personnel Required
General mechanic's tool kit (item 121, WP 0176)
Track Vehicle Repairer (2) 63H10
Container (minimum 2 gallon/7.5 liter capacity)
Equipment Conditions:
Engine installed in vehicle or ground hop.
MALFUNCTION 1:
Air in system.
PROBABLE CAUSE
CORRECTIVE ACTION
a. Occurred during fuel filter replacement,
(1) "Purge" fuel system. Turn master and
engine or power pack installation, or long
in-tank fuel pump switches to "ON".
period shutdown.
Operate in-tank fuel pump for 1 or 2
minutes. Simultaneously operate purge
pump, completing 4 or 5 strokes after firm
handle pressure is noted.
CAUTION
Do not depress flame heater button.
Damage to engine could occur.
(2) With in-tank pumps operating, open bleeder
valves (on cover of both primary and fuel/
water separator filters) until all fuel (no air)
is noted.
b. Return fuel restriction.
(1) Refer to Malfunction 10 in this work
package.
c. Damaged fuel hoses (fuel pump to filter, or
(1) Remove and install new hoses (WP 0084,
filter to fuel injection pump).
Fuel/Water Separator Automatic Drain
System and Wiring Harness Replacement).
MALFUNCTION 2:
Water contaminated fuel.
PROBABLE CAUSE
CORRECTIVE ACTION
a. Automatic drain system inoperative.
(1) Refer to Malfunction 12 in this work
package.
WP 0020 00-1
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