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 186 of 775

TM 9-2350-311–10

2–7 GENERAL — CONTINUED

• To prevent damage and overheating of engine and transmission when starting from a halt,

begin with transmission in Range 1.

• To prevent transmission from overheating, do not hold howitzer on incline with transmission

in gear.

2-8 ASSEMBLY AND PREPARATION FOR USE

Before operating a new vehicle, make sure unit maintenance has performed all service upon receipt procedures.

2-9 INITIAL ADJUSTMENTS AND CHECKS

2-9.1

Routine Checks

Check the controls before starting the vehicle and ensure all of the following conditions are met.

1

2

3

Before operation PMCS procedures have been performed (Table 2–1).

Do not drive vehicle with cannon tube out of travel lock assembly. Operation with cannon tube

out of travel lock assembly can cause serious vehicle damage.

Cannon tube (1) is positioned in travel lock assembly (2) and is locked in place

NOTE

• When turret lock assembly covers word LOCKED, turret lock assembly

is locked.

• If turret lock assembly sticks in positioning hole, manually traverse cab slightly left or right to

aline lock teeth with cab ring teeth.

Secure turret lock assembly by squeezing manual control levers (3 and 4) together to rotate turret

assembly over positioning hole (5).

lock

2-90