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 Item No. 17.1 18 2-34 Interval Before Before Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF-PROPELLED HOWITZER - CONTINUED Location Item to Check/ Service Variable Recoil Assembly Cannon Equilibrator Change 2 Crewmember Procedure CHIEF OF SECTION Before firing, there shall be no more than 1 ml (approximately 25 drops) of oil accumulation at any seal interface location and no evidence of seepage of hydraulic fluid from any of the hy- draulic tubes, manifolds, hose connections, and fill bleeder valves. Check for oil accumulation at seal interface(s) and for any hydraulic leaks. GUNNER AND ASSISTANT GUNNER NOTE Ensure that equilibrated elevation cylinder has been equilibrated. a. Unlock travel lock assembly, check power eleva- tion operation at gunner’s control assembly (1). b. Check manual and power elevation operation at assistant gunner’s control (2). Not Fully Mission Capable If: Cannon assembly will not elevate. Neither elevation method works.