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 2-10 OPERATING PROCEDURES -CONTINUED 2-10.7 Operating Miscellaneous Items a. Bilge Pump Do not operate bilge pump dry longer than 1 minute or wet for more than 15 minutes without engine running. To drain water out of engine compartment, turn MASTER switch (1) to ON and turn BILGE PUMP control switch (2) to ON and hold. NOTE M109A4/M109A5 howitzer engine model 7083-7396 driver’s fixed instrument panel is shown. Change 2 2-124.1/(2-124.2 blank)