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EN
31-418 AIR MOTOR
26
29
25
24
23
28
27
CONDITION
Air motor sluggish or inefficient.
AIR MOTOR REBUILD
Do not pry dead end plate (28) or drive end plate (34) from
air motor body (23) with a screwdriver. This will dent the
surface of the body and plates and causing leaks. A puller tool
should be used to remove the plate from the motor body
while maintaining the positions of the shaft.
Always install new gaskets (29) when re-assembling air motor.
Assemble the end plates to the body using an arbor press with
a pusher acting on both races of the bearing while rigidly
supporting the opposite (drive) end of the shaft.
20
36
21
35
37
34
33
29
32
31
30
AIR MOTOR DRIVE SERVICE CHECKS
CAUSE
Air motor needs lubrication or cleaning.
Motor vanes need replacing or
contaminants present in motor chamber.
Air motor bearing (25 or 35) worn.
31-418 PARTS LIST
Ref.
Replacement
No.
Part No.
20
Purchase Locally
21
Purchase Locally
23
QS-190
● 24
---
25
PT-58
26
31-419-K10
27
Purchase Locally
● 28
---
29
PT-59-1
30
---
31
31-429
---
● 32
33
31-430
34
---
35
31-421
36
31-420
37
Purchase Locally
● Parts included in KK-5001-1 Air Motor Repair Kit.
CORRECTION
Lubricate (see "Air Motor Lubrication"
section). Disassemble and clean per parts
replacement instructions.
Disassemble, clean motor per parts
replacement instructions. Replace worn
vanes.
Replace bearings per parts replacement
instructions.
6 / 8
Description
BOLT, 3/8-16 X 3/4" Long
LOCK WASHER, 3/8"
DEAD END CAP
END CAP GASKET
BEARING
DOWEL PIN (Kit of 10)
MACHINE SCREW, 1/4-28 X 1/2
DEAD END PLATE
GASKET, RED (.002")
BODY
ROTOR ASSEMBLY
VANE
KEY, 3/16" SQUARE
DRIVE END PLATE
BEARING
SEAL
MACHINE SCREW, 1/4-28 X 5/8
77-2992-R2.1 (12/2015)
Ind.
Parts
Req'd.
4
4
1
1
1
1
6
1
2
1
1
4
1
1
1
1
6
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