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 220 of 775

TM 9-2350-311-10

2-10 OPERATING PROCEDURES - CONTINUED

2-10.6

Operating Hull and Cab Doors and Hatches - Continued

g. Engine Air Intake Grille

Be careful when handling the engine air intake grille and travel lock. Serious injury or death could

occur if struck by either the grille or travel lock.

1

Release and elevate cannon tube and traverse cab 90° (para 2-10.8)

2

Unscrew two T-handles (36).

3

Open engine air intake grille (37) and secure in the open position by removing quick release pin (38)

from bracket (39) and installing in support (40).

4

Lower travel lock assembly (para 2-10.8).

5

To close engine air intake grille (37), remove quick release pin (38) from support (40) and install in

bracket (39).

6

Lower engine air intake grille (37) to closed position and secure with two T-handles (36).

7

Rotate cab 90°, so gun tube is facing forward. Raise travel lock assembly and lower cannon tube into

travel lock. Secure cannon tube in travel lock.

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