TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 565 of 1275

TM9-2350-311 -20-1

6-4 FUEL CHECK VALVES

This task covers:

a. Removal

b. Installation

Powerplant removed for right check valve removal

General mechanic’s tool kit (item 64, Appx H)

(para 4-5)

Fuel tanks drained (TM 9-2350-311-1 O)

. .

Equipment Conditions

(de-fueling tanker may be required)

Engine compartment access cover removed for left check

valve removal (para 11-5)

a. Removal

Do not smoke or use open flame when working on fuel system. An explosion may

occur, causing severe injury or death.

NOTE

Left check valve may be accessed through engine compartment access cover.

Powerplant does not have to be removed to remove left check valve.

1 Disconnect fuel hose (1) at right check valve (2).

2 Remove right check valve (2) from right electric fuel pump assembly (3).

3 Remove fuel hose (4) at left check valve (5).

4 Remove left check valve (5) from left electric

b. Installation

fuel pump assembly (6).

Do not smoke or use open flame when working on fuel system. An explosion may

occur, causing severe injury or death.

1 Install left check valve (5) to left electric fuel pump assembly (6).

2 Connect fuel hose (4) to left check valve (5).

3 Install right check valve (2) on right electric fuel pump assembly (3).

6-10

INITIALSETUP

Tools

WARNING

WARNING