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 728 of 1275

TM 9-2350-311-20-1

8-31 STARTER RELAY BOX

This task covers:

a. Removal

b. Installation

Tools

General mechanic’s tool kit (item 64, Appx H)

External-tooth Iockwashers (4) (item 75, Appx G)

Lockwashers (2) (item 95, Appx G)

NOTE

The following removal and installation procedures apply to either the starter switch

relay box (M109A2/M109A3) or the starter protection relay box (M109A4/M109A5).

a. Removal

1

2

3

4

Ensure MASTER switch is OFF when working on starter switch relay boxes to avoid

electrical shocks and bums.

Disconnect electrical connector (1).

Remove and save two nuts (2), two Iockwashers (3), four external-tooth Iockwashers (4), two flat washers (5),

and two screws (6).

Remove starter relay box or starter protection relay box (7).

Replace two nuts (2), two Iockwashers (3), four external-tooth

lockwashers (4), two flat washers (5), and two

screws (6) to hold bilge pump relay (8).

8-83

WARNING