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 525 of 828

TM 9–2350–311–20–2

10–5

d.

Assembly

1

To assemble roller group (27), install collar (32) and sleeve bearing (31) to shaft (33).

2

Install spring anchor (37) on shaft (33) and aline holes; secure with new spring pin (38). Lubricate spring pin

with CLP.

3

Slide helical spring (35) and spring anchor (36) on shaft (33). Attach helical spring to spring anchors (36 and

37). Lubricate helical spring with CLP.

4

Install sleeve bushing (34) on end of shaft (33).

5

Install tube (30) on shaft (33) and aline holes in tube with holes in spring anchor (36) and collar (32); secure

with machine screws (28 and 29).

6

Install shaft (25) into curtain assembly (26) and mounting bracket (3).

7

Install two retaining rings (24) onto shaft (25). Roll curtain up.

8

Install mounting bracket (21) using two new lockwashers (19) and two cap screws (18).

9

Position mounting bracket (22) on end of shaft (33) alining it with hole in sleeve bushing (34); secure with

new spring pin (23).

10

Wind mounting bracket (22) four turns counterclockwise and mount to mounting bracket (20) using two new

lockwashers (19) and two cap screws (18).

20

21

30

34

28

29

27

36

35

38

33

32

31

22

23

19

18

26

3

25

24

37