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 265 of 775

TM 9--2350--311--10

Change 6

2--167

2--12 PREPARATION FOR FIRING — CONTINUED

2--12.1

Pre-Firing Emplacement — Continued

d. Emplacing M1A2 Aiming Posts — Continued

(m) Tapping top of vehicle and moving hand (left or right) represents movement of top of M1A2 aiming

post (64).

(n) Hand waved in a circular motion means for cannoneer no. 3 to return.

WARNING

The M1A1 collimator is radioactively illuminated. Check for presence of illumination and

damage. If discovered broken, damaged, or defective, follow the procedures on pages b

and c.

5

After M1A2 aiming posts (64) are emplaced, M117/M117A2 panoramic telescope (36) sight picture

should be as illustrated (no displacement). Gunner then records value indicated on azimuth counter (35)

and returns to sight picture on M1A1/M1A2 collimator (not shown).

64

65

66

36

37

38

39

40

NO

DISPLACEMENT

FAR M1A2

AIMING POST

(TWO SECTIONS)

NEAR M1A2

AIMING POST

(ONE SECTION)

35