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 642 of 828

TM 9–2350–311–20–2

17–4

17–2 M3 ELECTRICAL AIR HEATER — CONTINUED

a.

Removal — Continued

2

Loosen hose clamp (3) and disconnect hose (4) from adapter (5) in inlet port (6) of M3 electrical air heater

(2).

3

Loosen hose clamp (7) and disconnect hose (8) from adapter (9) in outlet port (10) of M3 electrical air heat-

er (2).

NOTE

Section chief’s station requires removal of a retaining strap, and cannoneer no. 1’s station requires

removal of a retaining strap and a washer when removing M3 electrical air heaters.

4

Remove four cap screws (11), four lockwashers (12), M3 electrical air heater (2), and four lockwashers (13)

from cab ceiling. Discard all lockwashers.

5

Remove adapters (5 and 9).

13

1

2

6

3

4

8

7

9

5

12

11

5

9

2

10