83. Shutter Air Cylinder
a. Removal (fig. 25).
(1) Close the shutoff cock (29), and disconnect the air line (18) from the connector (3) in the air cylinder (21).
(2) Remove the hex nut (22) from the shutter control rod (23).
(3) Remove the two hex head bolts (20) and lockwashers (5), and lift the air cylinder (21) and bracket from the
shutter assembly (19).
1
Cylinder body
21
Screw, rd hd, No. 10-24 x 1/4 (2
2
Nut, hex jam, 5/16-18 (2 req)
req)
3
Piston head, small
22
Lockwasher, No. 10 (2 req)
4
Piston cup expander
23
Lock clip, rh
5
Piston cup washer
24
Lock clip, 1h
6
Piston cup
25
Dust cap retainer
7
Piston head, large
26
Dust cap
8
Piston lubricator felt
27
Dust cap felt
9
Spring
28
Dust cap washer
10
Piston rod
29
Plug, pipe, 1/8-27 (2 req)
11
Bearing pin, 3/8 in.
30
Screw, rd hd, 1/4-20 x 5/8 (4
12
Expansion plug (2 req)
req)
13
Bearing pin, 5/16 in.
31
Lockwasher, 1/4 (4 req)
14
Drilled bearing pin
32
Cylinder head
15
Bellcrank, rh
33
Cylinder head gasket
16
Bearing block
34
Bearing lubricator felt
17
Bellcrank, 1h
35
Felt retainer ring
18
Cotter pin, special, 3/32 x 1 3/4
36
Screw, flat hd, 5/16-18 x 5/8 (2
19
Rod connecting block
req)
20
Shutter lock 37
37
Mounting bracket
Figure 27. Exploded view of air cylinder.
73
