TM-9-2350-311-20-1

HOWITZER, MEDIUM, SELF-PROPELLED, 155MM; M109A2, M109A3, M109A4 AND M109A5

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR HULL, POWERPLANT, DRIVE CONTROLS, TRACKS, SUSPENSION, AND ASSOCIATED COMPONENTS

AUGUST 1994

TM-9-2350-311-20-1 - Page 476 of 1275

TM 9-2350-311 -20-1

4-5 POWERPLANT — CONTINUED

a. Removal — Continued

6 Open right and left transmission access doors(16 and 17).

7 Remove two nuts (18), two washers (1 9), two screws (20), and transmission door support (21).

Center front slope plate assembly is heavy. Do not allow center front slope plate to

swing while suspended by hoist and sling. Use caution when working near a sling

under tension to prevent severe injury.

Support center front slope plate during removal to prevent equipment damage.

NOTE

Use engine oil level access hole to remove center front slope plate.

8 Remove seven screws (22), seven washers (23), three screws (24), three washers (25), and center front slope

plate assembly (26). If center front slope plate assembly is damaged, notify depot maintenance.

Transmission access doors are heavy. If hoisting sling is not available, two personnel

are required to lift and move doors.

9 Attach hoist and sling (27) to right transmission access door (16), supporting door at 45° angle. Remove two

nuts (28), two washers (29), and two screws (30). Remove left transmission access door (17) using same

procedure.

10 Remove two screws (31), two washers (32), two screws (33), four washers (34), two Iockwashers (35), two

nuts (36), and grille support assembly (37). Discard Iockwashers.

11 Loosen hose clamp (38). Pull bilge pump hose (39) away from connector tube (40).

4-14

WARNING

CAUTIO N

WARNING