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 157 of 775

TM 9-2350-311-10

Item

No.

44

Interval

After

Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

FOR M109 SELF-PROPELLED HOWITZER - CONTINUED

Location

Item to Check/

Crewmember

Service

Procedure

Final Drive

DRIVER

Sprockets

Not Fully Mission

Capable If:

a. Check for loose or missing nuts and bolts (1) on

final drive sprocket (2). If any are loose or

missing, notify unit maintenance. Check for

cracked, broken, or missing sprocket teeth (2.1).

If any are cracked, broken, or missing, notify

unit maintenance.

Any nuts or bolts

(1) are loose or

missing. Any

sprocket tooth

(2.1) is cracked,

broken or miss-

ing.

b. The T-136 track has two types of final drive

sprockets (2). Follow the procedures that match

the type of final drive sprocket available.

1. Visually check wear marks (3) on two teeth

(4).

Tooth (4) is worn

to edge of wear

mark (3).

Change 2

2-63