TM-9-2320-272-24-3

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

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 3 OF 4

JUNE 1998

TM-9-2320-272-24-3 - Page 748 of 799

TM 9-2320-272-24-3

4-219. PERSONNEL FUEL BURNING HEATER ELECTRIC FUEL PUMP (M939A2)

REPLACEMENT

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

M939A2

TOOLS

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

MATERIALS/PARTS

Two locknuts (Appendix D, Item 313)

Cap and plug set (Appendix C, Item 14)

REFERENCES (TM)

TM 9-2320-272-10

TM 9-2320-272-24P

EQUIPMENT CONDITION

l

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

l

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

GENERAL SAFETY INSTRUCTIONS

Diesel fuel is flammable. Do not perform this

procedure near open flame.

WARNING

Diesel fuel is flammable. Do not perform this procedure near

open flame. Injury to personnel may result.

NOTE

Procedures for changing personnel fuel burning and engine

coolant heater electric fuel pumps are similar, this procedure

is for personnel fuel burning heater electric fuel pump.

a. Removal

1.

Disconnect connector (3) from electric fuel pump wire (6).

CAUTION

When disconnecting lines and hoses from pump, immediately plug

all open ports. Failure to do so can cause damage to pump.

NOTE

Tag all lines and ports for installation.

2.

Disconnect fuel inlet line (8) and outlet line (2) from adapter fittings (4).

3.

Remove two screws (5), locknuts (1), and electric fuel pump (7) from left-hand splash panel (9).

Discard locknuts (1).

b. Installation

1.

Install electric fuel pump (7) on left-hand splash panel (9) with two screws (5) and new locknuts (1).

2.

Connect fuel inlet line (8) and outlet line (2) to adapter fittings (4).

3.

Connect connector (3) to electric fuel pump wire (6).

4-1012