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 529 of 1275

TM 9-2350-311 -20-1

5-4 OIL FILTER ASSEMBLY AND ENGINE OIL SAMPLING COMPONENTS — CONTINUED

a. Removal

Oil is hazardous waste and must be disposed of in accordance with local procedures

or direction of the local Hazardous Waste Management office.

1 Remove two drain plugs (1) and drain oil from filter shells (2) into suitable container.

2 Unscrew two center studs (3) and remove two filter shells (2) with two filter assemblies (4).

3 Remove nut (5) and gasket (6) from adapter (7). Discard gasket.

NOTE

Illustration shown is the M109A2 vehicle. The procedure is identical for the M109A3

and M109A4 Howitzers.

4 Remove from each filter shell (2): center stud (3), gasket (8), filter element (9), packing retainer (1 O), ring

spacer (11 ), preformed packing (12), and spring (13). Discard gaskets, filter elements, and preformed

packings.

5 Remove pipe plug (14), plug (15), and gasket (1 6). Discard gasket.

6 Loosen two nuts (17) and disconnect hoses(18 and 19).

7 Remove engine oil sampling hose clamp (20), sampling hose (21), and two elbows (22).

8 Loosen sampling valve locknut (23) on mounting bracket (24) marked ‘ENGINE” and remove valve assembly

(25).

9 Remove four screws (26) and adapter (7).

5-8

WARNING