TM-9-2350-311-10

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; OPERATOR’S MANUAL

NOVEMBER 1994

TM-9-2350-311-10 - Page 385 of 775

TM 9-2350-311-10

2–20

2-20.4

OPERATION IN UNUSUAL ENVIRONMENT/WEATHER — CONTINUED

Operation in Extreme Cold — Continued

d. Cold Weather Starting (Vehicles with Engine Model 7083-7396) — Continued

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With brakes still locked, shift transmission shift control lever (9) to 4 (4th gear) position and set hand

throttle control lever (17) to run engine at 1200 rpm. When ENGINE WATER TEMP gage (18) indicates

120 to 140° F, shift into neutral and idle engine. (If transmission temperature approaches

300° F during warm-up, immediately shift to N (neutral), until temperature approaches normal range).

During warm-up, refer to portable instrument panel checkout procedure (para 2–10.2).

Press down on brake pedal (7) and lift up and push in on manual control handle (8) to release parking

brake.

Shift transmission shift control lever (9) to 1 (1st gear position) and drive vehicle slowly 100 yards

(91.4 m), being careful not to stall engine. This warms lubricants sufficiently for normal operation.

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