TM 9-2320-289-20
10-32. HEATER FUEL PUMP REPLACEMENT (M1010).
This task covers:
a.
Removal
c. Installation
b. Cleaning
INITIAL SETUP:
Equipment Condition
Materials/Parts
• Both battery negative cables disconnected,
• One gasket
(See paragraph 4-38)
General Safety Instructions
• DO NOT perform this procedure near fire, flames, or sparks. A fire extinguisher must be on
hand in work area.
a.
REMOVAL
1.
2.
3.
4.
5.
6.
7.
WARNING
Diesel fuel is flammable. DO NOT perform procedures near fire, flames, or
sparks. A fire extinguisher must be on hand in work area. Failure to follow
this warning may result in serious injury or death.
NOTE
If removing cut-out switch (7), perform steps 3, 6, and 7.
Loosen 2 nuts (4) and disconnect intake pipe (16) and output pipe (3) from 2 fittings (1 and
15).
NOTE
Trucks equipped with winterization kits will have an engine coolant heater
fuel line (2) at fitting (1) instead of cap (14) and gasket (13).
Remove 2 fittings (1 and 15) from heater fuel pump (5), and cap (14) and gasket (13) from
fitting (1) if damaged. Discard gasket if removed.
Disconnect 2 electrical connectors (10).
Remove
Remove
Remove
Remove
2 bolts (12) and heater fuel pump (5). Remove 2 nuts (9) if damaged.
filter (11) from heater fuel pump (5) and set aside for cleaning.
cut-out switch (7) from clip (8) on inner fender.
2 screws (6) and clip (8).
10-118
