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 2–100 Change 3 2–10 OPERATING PROCEDURES — CONTINUED 2–10.2 Portable Instrument Panel Checkout Procedures a. MASTER WARNING Indicator Light Ensure MASTER WARNING indicator light (1) goes out after the engine has run for 15 seconds. If MASTER WARNING indicator light illuminates during operation, shift transmission shift control lever (2) into N (neutral) and set hand throttle control lever (3) to run engine at 1000 to 1200 rpm and proceed as follows. 1 If either WATER TEMP gage (4) or TRANSMISSION OIL TEMP gage (5) reading is high and does not return to normal after 5 minutes, stop engine and check coolant level. 2 If either ENGINE OIL PRESSURE gage (6) or TRANSMISSION OIL PRESSURE gage (7) reading is low, stop engine and check oil level. 3 If MASTER WARNING indicator light (1) stays on, notify unit maintenance. b. ENGINE OIL PRESSURE Gage CAUTION If oil pressure is below 5 psi at idle (650 RPM) or below 30 psi at 1800 RPM, shutdown engine and check oil level. ENGINE OIL PRESSURE gage (6) normal range is minimum of 5 psi at idle (650 RPM) and 30-50 psi at 1800 RPM and 50-70 psi at 2100 RPM (Maximum of 70 psi). c. TRANSMISSION OIL PRESSURE Gage TRANSMISSION OIL PRESSURE gage (7) normal range is 18 to 45 psi at 1835 to 1900 rpm. (Minimum is 10 psi at 1000 rpm.) d. Indicator Lights Two indicator lights (8) illuminate portable instrument panel (9). e. FUEL Gage NOTE Never run completely out of fuel. Injectors require full return flow for cooling. FUEL gage (10) indicates fuel quantity available in either fuel tank. FUEL gage control switch (11) located on fixed instrument panel (12) is used to select tank.