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 172 of 775

TM 9-2350-311-10

Item

No.

61

Interval

Weekly

Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

FOR M109 SELF-PROPELLED HOWITZER - CONTINUED

Location

Item to Check/

Service

Track Tension

2-78 Change 2

Crewmember

Procedure

DRIVER

Move vehicle back and forth several times on level

ground. Stop by shifting transmission shift control

to N and coasting to a stop. Turn off engine. Mea-

sure distance between top of the third road wheel

(1) and the track (2). The distance should be 1/4

inch (6.3 mm). If not, adjust track tension.

CAUTION

When increasing track tension, do not let track

adjuster extend beyond 3-1/2 inches (8.89

cm) to avoid track adjuster damage.

NOTE

When track adjuster has reached the maxi-

mum extended limit of 3-1/2 inches (8.89 cm),

remove one track shoe and readjust track ten-

sion.

To increase track tension, pump grease (item 17,

Appx D) into clean lubrication fitting (3) on track

adjuster (4) until correct tension is obtained.

Not Fully Mission

Capable If:

Track tension will

not adjust.