TM-9-2350-311-20-2

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

TECHNICAL MANUAL; UNIT MAINTENANCE MANUAL FOR CAB, ARMAMENT, SIGHTING AND FIRE CONTROL, ELEVATING AND TRAVERSING SYSTEMS AND ASSOCIATED COMPONENTS

DECEMBER 1993

TM-9-2350-311-20-2 - Page 493 of 828

TM 9–2350–311–20–2

Change 2

8–69

c.

Testing

Using multimeter, test power relay box to intercom power supply lead assembly for continuity.

d.

Installation

1

Secure power relay box to intercom power supply lead assembly (12) to cab using two hex head screws

(11.1), two new lockwashers (11.2), two flat washers (11.3), and two harness clamps (11).

2

Install connector (6) on mounting bracket (10) using four machine screws (7), four flat washers (8), and four

hex nuts (9).

3

Connect connector (5) of wire 148 to connector (6).

4

Using hex head bolt (3), secure ground lead (4), wire 148, to rear of cab.

5

Connect connector (1), wire 148, to power relay box assembly (2).

11.2

11.3

11

11

11.1

12