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 5-6 FUZE SETTING — CONTINUED d. Procedure Number 4, M564 and M565 Fuzes — Continued 2 Setting M564 and M565 fuzes for airburst (time). Incorrect settings of MT and MTSQ fuzes can and have resulted in downrange premature malfunctions. The safety of personnel located downrange of a weapon firing MT and MTSQ fuzes (between the weapon and intended target) is in the hands of the gun crew personnel assigned the job of setting the fuzes. (a) To set the M564 and M565 fuzes for a whole-second time setting use the M34 fuze setter to rotate the lower cap in the direction of the arrow (5) (clockwise), until the desired whole number of seconds (e.g., 20.0 seconds) on the lower cap scale (6) is alined with the “0” mark engraved on the vernier scale (7). 5-58