TM-9-2320-280-20-3

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 3 OF 3

JANUARY 1996
TM-9-2320-280-20-3

  TM-9-2320-280-20-3 - Page 550 of 1168

11-194. HEATER FUEL PUMP REPLACEMENT
This task covers:
a. Removal
b.
Installation
INITIAL SETUP:
Applicable Models
M996, M996A1, M997, M997A1, M997A2
Tools
General mechanic’s tool kit:
automotive (Appendix B, Item 1)
Materials/Parts
Sealing compound (Appendix C, Item 44)
Two locknuts (Appendix G, Item 70)
Tiedown strap (Appendix G, Item 308)
Manual References
TM 9-2320-280-24P
Equipment Condition
Battery ground cable disconnected (para. 4-73).
General Safety Instructions
Do not perform this procedure near fire, flames,
or sparks.
WARNING
Diesel fuel is highly flammable. Do not perform this procedure
near fire, flames, or sparks. Severe injury or death will result.
NOTE
• Have drainage container ready to catch fuel.
• Cover or plug all open connections immediately after
disconnection to prevent contamination. Remove covers or plugs
prior to connection.
• Apply sealing compound to threads of all fuel line joints before
installation.
1.
Disconnect two fuel lines (8) from elbow (7) and fitting (9) and allow fuel to drain.
2.
Remove tiedown strap (1) from fuel pump lead (13) and dipstick tube (2). Discard tiedown
strap (1).
3.
Disconnect fuel pump lead (13) from control box lead (12).
4.
Remove two locknuts (11), washers (3), capscrews (4), washers (3), fuel pump (6), and ground
terminal (5) from capacitor clamp (14) and bracket (10). Discard locknuts (11).
5.
Remove elbow (7) and fitting (9) from fuel pump (6).
1.
Install elbow (7) and fitting (9) on fuel pump (6).
2.
Install fuel pump (6) on bracket (10) and capacitor clamp (14) with ground terminal (5), two
washers (3), capscrews (4), washers (3), and locknuts (11).
3.
Connect two fuel lines (8) to elbow (7) and fitting (9).
4.
Connect fuel pump lead (13) to control box lead (12) and install fuel pump lead (13) on dipstick
tube (2) with tiedown strap (1).
b. Installation
a. Removal
TM 9-2320-280-20-3
11-286
Change 2


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