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 2-10.3 Transmission Shift Control Lever — Continued Follow backing up procedures using two guides (para 2–10.4). f. R1 (Reverse-Range 1) Use when: 1 2 3 Never attempt to shift into R1 and R2 (reverse range: stop and the engine is operating at idle rpm. Backing up (para 2–10.4). Making turns with heavy loads or on soft ground. 1 and 2) unless the vehicle is at a dead Ascending steep grades in rearward movement for maximum engine power. (Maximum speed is 5 mph.) g. R2 (Reverse- Range 2) Use when: On level, hard surfaces when rearward movement for long distances is necessary. (Maximum speed is 7 mph.) 2-106