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 2-10.2 Portable Instrument Panel Checkout Procedures — Continued f. BATTERY Gage If BATTERY gage (13) indicates subnormal charge or overcharge, notify unit maintenance. g. TRANSMISSION OIL TEMP Gage TRANSMISSION OIL TEMP gage (5) normal range is 220 to 240° F. (Maximum is 300° F.) h. WATER TEMP Gage WATER TEMP gage (4) normal range is 170 to 185° F. (Maximum is 230° F.) Do not remove radiator cap when engine is hot. Severe burns could result from failure to observe this warning. i. COOLANT Indicator Light COOLANT indicator light (14) indicates coolant level in cooling system. If low, shut engine down and check coolant level. j. MASTER Switch Move MASTER switch (15) to ON position to start engine. When MASTER switch is to ON, MASTER switch indicator light (16) is illuminated. 2-102