Service parts
Item
Description
1
Machine screw, 8-32 × 1
2
Muffler
3
Air motor
4
O-ring, 1
1
/
in ID × 1
1
/
in OD
8
4
5
Tube adapter
6
O-ring, 1 in ID × 1
/
in OD
1
8
7
Coupling
8
Roll pin,
/
in dia. × 0.562 in
3
32
9
Roll pin,
/
in dia. ×
/
in
1
9
8
16
10
Rod
11
Ball,
/
in dia.
5
16
12
Roll pin,
/
in dia. × 0.625 in
3
32
13
Piston
14
Tube
15
Retainer
16
Seal, 0.6 in ID × 1 in OD
17
Bearing (brass)
18
Gasket (copper), 1
/
in OD
17
64
19
Adapter
20
Stop
21
Ball,
/
in dia.
19
32
22
Gasket (copper), 1.12 in OD
23
Valve seat
Not all parts are available separately.
1)
Refer to 670628 for air motor components.
2)
Included in major repair kit 394778-2.
3)
See Model specific parts, Table 8.
Model specific parts *
Item
Description
331571-A5
10
Rod, 21.53 in
14
Tube, 27
35
/
64
331571-B5
10
Rod, 31 in
14
Tube, 37
1
/
in
16
331571-C5
10
Rod, 8.25 in
14
Tube, 10 in
Indicates change.
*
Table 7
Quantity Part
1
/
in
1
–
4
1
321085
1
324300-5
1
–
2)
1
–
2
–
2)
1
320974
1
–
2)
1
–
2)
1
3)
1
–
2)
1
–
2)
1
–
1
3)
1
–
1
–
2)
1
–
2)
1
–
2)
1
–
1
–
1
–
2)
1
–
2)
1
–
2)
Table 8
Quantity
1
in
1
1
1
1
1
Repair kits *
Major repair kit – 394778-2
Item
Description
4
O-ring, 1
/
1
1)
6
O-ring, 1 in ID × 1
8
Roll pin,
3
/
32
9
Roll pin,
/
1
8
11
Ball,
/
in dia.
5
16
12
Roll pin,
3
/
32
16
Seal, 0.6 in ID × 1 in OD
17
Bearing (brass)
18
Gasket (copper), 1
21
Ball,
/
in dia.
19
32
22
Gasket (copper), 1.12 in OD
23
Valve seat
Indicates change.
*
16
in ID × 1
/
in OD
1
8
4
/
in OD
1
8
in dia. × 0.562 in
in dia. ×
/
in
9
16
in dia. × 0.625 in
/
in OD
17
64
Table 9
Quantity
1
2
1
1
1
1
1
1
1
1
1
1