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 725 of 1275

TM 9-2350-311-20-1

8-29 MASTER RELAY BOX

This task covers:

a. Removal

b. Installation

INITIAL SETUP

Equipment Condition

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

Batteries ground cables disconnected (para 8-28)

a. Removal

1 Disconnect starter cable connector (1), master switch cable connector (2), and battery cable connector (3) at

master relay box (4).

2 Remove

3 Remove

b. Installation

two screws (5) and two washers (6).

master relay box (4).

1 Install master relay box (4), two washers (6), and two screws (5).

2 Install battery cable connector (3), master switch cable connector (2), and starter cable connector (1).

FOLLOW-ON

NOTE

MAINTENANCE:

Connect battery ground cables

(para 8-28)

8-80