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 236 of 775

TM 9-2350-311-10

2–11 OPERATION OF FIRE CONTROL EQUIPMENT UNDER NORMAL

— CONTINUED

2-11.1 M117/M17A2 Panoramic Telescope and M145/M145A1 Telescope Mount —

c. Operation of M117/M117A2 Panoramic Telescope

1

2

3

4

NOTE

CONDITIONS

Continued

• The following steps are required to ensure correct announced deflection is set on

M117/M117A2 panoramic telescope.

• Steps 1 through 4 are to be performed by the gunner prior to firing the weapon.

Turn gunner’s aid knob (9) to place correction factor obtained from Fire Direction Center (FDC) for

individual weapon to either L or R window of gunner’s aid counters (10).

Turn azimuth knob (4) until 3200 or announced deflection appears on reset counter (6).

Traverse cannon tube until proper sight picture is obtained on aiming point (para 2–1 2.6).

Turn cross-level mechanism knob (7) and pitch knob (17) on M145/M145A1 telescope mount (27) to

center cross-level (8) and pitch level (12). Recheck sight picture and adjust if necessary.

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