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 3 2–54.1 Table 2–1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES FOR M109 SELF-PROPELLED HOWITZER Location Item No. Interval Item to Check/ Service Crewmember Procedure Not Fully Mission Capable If: 34.1 During Driver’s Fixed And Portable Instrument Panels (Engine Model 7083–7396) DRIVER Check the following: a. MASTER switch indicator light (1) is lit when MASTER switch (2) is in ON position. b. MASTER WARNING indicator light (3) is not lit 15 seconds after engine starts. NOTE Depending on climatic conditions, it may take several minutes to obtain these readings. c. ENGINE OIL PRESSURE gage (4) reads: minimum of 5 psi (34 kPa) at idle (650 RPM) 30-50 psi (207-345 kPa) at 1800 RPM. ENGINE WATER TEMP gage (5) or ENGINE OIL PRESSURE d. ENGINE WATER TEMP gage (5) reads 170° F minimum, 230° F maximum. gage (4) is inop- erative or does not read within limits. NOTE M109A4/M109A5 configuration shown. 1 3 5 4 2