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 498 of 775

TM 9-2350-311-10

3-7 FIRE CONTROL ALINEMENT TESTS AND MEASUREMENTS

— CONTINUED

3-7.5

Leveling the Cannon Tube — Continued

a. Leveling the Cannon Tube Using the Cannon Tube Leveling Fixture (If Required) — Continued

2 On the cannon tube leveling fixture (4), remove the screw (5) from the movable shoe (6) and move the

shoe over the 155MM mark (7).

3 Replace and tighten screw (5).

4 Loosen screw (8) and insert cross-level vial (9) under holder (10) on cannon tube leveling fixture (4).

Tighten screw, then screw the magnet base stop (11) onto the screw as it protrudes through the cannon

tube leveling fixture from the holder. Tighten magnet base stop securely.

3-94