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 159 of 775

TM 9-2350-311-10

Item

No.

45

Interval

After

Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

FOR M109 SELF-PROPELLED HOWITZER - CONTINUED

Location

Item to Check/

Service

Track Shoes,

End Connector,

Center Guides,

Wedges, Bolts,

and Bushings

Crewmember

Procedure

DRIVER

a. Check for loose, damaged, or missing end con-

nectors (1), center guides (2), track shoes (3),

and wedges and bolts (4).

b. Check track shoe (3) for damaged pins (5), mis-

sing pad nuts, and any unusual gaps between

two adjacent track shoes which indicate worn

bushings.

NOTE

Worn bushings are very difficult to locate.

Worn bushings will cause the pin to appear

off-center. It may have protruding pin or track

pad nut and unusual gaps between two adja-

cent track shoes.

Worn or missing track pads and track pad nuts

must be replaced. Notify unit maintenance.

c. Check track shoe (3) for damage. Report dam-

aged track assembly to unit maintenance. Dam-

age includes cracked or broken shoe body and

chunked or missing road wheel rubber.

Not Fully Mission

Capable If:

End connectors

(1) are missing or

cracked.

Center guides (2)

are missing.

Any wedge or

bolt (4) is mis-

sing.

Any one track

shoe (3) has

worn bushings,

protruding pin, or

missing track pad

nut.

Any one bushing

deemed unser-

viceable.

Any track shoe

(3) is bent, bro-

ken, or cracked.

Any pin is bent,

broken, or mis-

sing.

Any one track

shoe (3) body is

bent, cracked, or

broken.

2-65