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 656 of 828

TM 9–2350–311–20–2

17–18

Change 2

17–4 NBC CONTROL BOX ASSEMBLY — CONTINUED

e.

Installation

1

Install distribution box (3) using four cap screws (6), four new lockwashers (7), and four new lockwashers

(8).

2

Connect NBC power lead assembly (4) to J2 connector (5) of distribution box (3).

3

Connect cab power lead assembly (1) to J1 connector (2) of distribution box (3).

f.

Testing

Test operation of control box assembly by checking that NBC indicator lights and M3 air heaters work.

6

7

8

3

1

2

5

4