TM-9-2350-311-10

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

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 421 of 775

TM 9--2350--311--10

Change 6

3--21

3--5

HULL MAINTENANCE PROCEDURES — CONTINUED

3--5.4

Maintenance of Air Cleaner

a. Removal

WARNING

If NBC exposure is suspected, all filter media will be handled by personnel wearing full NBC

protective equipment.

NOTE

Depending on conditions, the air cleaner filter must be removed periodically for cleaning. Loss

in engine power, an overheating engine, or excessive black exhaust may indicateneed formore

frequent cleaning. If air cleaner indicator shows red area, the air cleaner is restricted and air

cleaner filters must be checked.

1

Shut off engine.

2

Remove hull ammunition rack (1) by disconnecting two quick-release pins (2) and lifting straight up.

3

Remove right access door (3) by pulling locking latch (4) down and lifting off right access door.

CAUTION

Do not pull left access door up so far that it causes binding and damage to left access door when

removing.

4

Remove left access door (5) by pulling locking latch (6) down, pulling left access door up slightly, and

sliding left access door off to right.

5

Pull locking levers (7) down.

6

Push air cleaner filter (8) in and pull out from air cleaner filter compartments (9).