TM-9-2320-272-24-2

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4

JUNE 1998

TM-9-2320-272-24-2 - Page 326 of 991

TM 9-2320-272-24-2

3-381. VAN HEATER FUEL PUMP (M934A1/A2) REPLACEMENT

THIS TASK COVERS:

a. Removal (M934A1/A2)

c. Removal (M934)

b. Installation (M934A1/A2

d. Installation (M934)

APPLICABLE MODELS

M934/A1/A2

TOOLS

General mechanic’s tool kit (Appendix E, Item 1)

MATERIAL/PARTS

Antiseize tape (Appendix C, Item 72)

REFERENCES (TM)

TM 9-2320-272-10

TM 9-2320-272-24P

EQUIPMENT CONDITION

Parking brake set (TM 9-2320-272-10).

Battery ground cables disconnected (para. 3-126).

GENERAL SAFETY INSTRUCTIONS

Diesel fuel is highly flammable. Do not perform fuel

system procedures near open flame.

1.

Loosen two locking studs (8) from turnbuckles (3) and open access door (9).

2.

Disconnect fuel pump lead (10) from harness lead (11).

3.

Disconnect output line (4) from elbow (5).

4.

Disconnect input line (1) from elbow (2).

5.

Remove two locknuts (12)1, screws (6), clamp (7) with fuel pump lead (10), and fuel pump (14) from

hinge plate (13). Discard locknuts (12).

6.

Remove elbows (2) and (5) from fuel pump (14).

NOTE

Wrap male threads with antiseize tape prior to installation.

1.

Install elbows (2) and (5) on fuel pump (14).

2.

Install fuel pump (14) and clamp (7) with fuel pump lead (10) on hinge plate (13) with two screws (6)

and new locknuts (12).

3.

Connect input line (1) to elbow (2).

4.

Connect output line (4) to elbow (5).

5.

Connect fuel pump lead (10) to harness lead (11).

6.

Close access door (9) and tighten two locking studs (8) in turnbuckles (3).

3-934