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 569 of 828

TM 9–2350–311–20–2

14–5

4

Install two cap screws (32) to join plate spacer (33) to door handle mounting (28). Add or subtract plate

spacers (33) as necessary for secure fit of door handle (27) on door mounting handle.

WARNING

Adhesives can burn easily, can give off harmful vapors, and are harmful to skin and clothing. To

avoid injury or death, keep away from open fire and use in well-ventilated area. If adhesive gets on

skin or clothing, wash immediately with soap and water.

5

Apply adhesive to new seal (24) and install on gunner’s escape hatch (1).

6

Using two cap screws (21), install plate spacer(s) (22 and 23) inside roof of cab.

NOTE

Depending on which configuration of gunner’s escape hatch is being assembled, perform either

step 7 or 8.

7

Install torsion helical spring (20) and pawl (19) on cab roof using headless grooved pin (18) and two new

retaining rings (17).

8

Install torsion helical spring (16), pawl (15), and bumper (14) on cab roof using two headed straight pins (13)

and two new cotter pins (12).

9

If present, install bumper (11) on gunner’s escape hatch (1).

1

11

38

39

40

37

36

35

41

20

17

18

19

17

33

28

32

24

31

27

30

26

25

29

21

22

16

15

12

14

13

34

23