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 256 of 775

TM 9-2350-311-10

2–12

PREPARATION FOR FIRING — CONTINUED

2–12.1

Pre-Firing Emplacement — Continued

a.

Emplacing Howitzer — Continued

In order to prevent damage to M118A2/M118A3 elbow telescope, stow against upper stop when

not in use. Do not use as a handhold under any circumstances.

24

Assistant gunner checks M118A2/M118A3 elbow telescope (24) as follows.

(a)

Depress lock-release lever (25) to adjust eyepiece arm (26) to a convenient viewing angle.

(b)

Adjust variable resistor knob (27) for reticle illumination.

(c)

Center level vial (28) by turning red wormshaft assembly knob (29).

(d)

Verify that elevation dial (30) and deflection scale dial (31) on M146 telescope mount (32) are set 4

to center scale.

25

Chief of section conducts pre-fire checks (para 2–12.4) and verifies howitzer is prepared for action, and

reports “SIR, NUMBER (SO AND SO) IN ORDER” or reports any defects section cannot correct.

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