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 643 of 828

TM 9–2350–311–20–2

17–5

b.

Disassembly

WARNING

Be certain MASTER switch is in OFF position when working on electrical system to avoid electrical

shock and burns.

1

Turn light lens (14) counterclockwise and remove.

2

Remove incandescent lamp (15) from M3 electrical air heater (2).

NOTE

Be sure knob is in OFF position before removing.

3

Loosen screw (16) and pull knob (17) off M3 electrical air heater (2).

c.

Assembly

1

Install incandescent lamp (15).

2

Install light lens (14) in M3 electrical air heater (2) by turning clockwise.

3

Position knob (17) on M3 electrical air heater (2) in the OFF position and tighten screw (16).

14

15

17

2

16