TM-9-2350-311-10 M109 Operator's Manual for M109A2, M109A3, M109A4 and M109A5 Download
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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 indicate need for more 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).