Page 7
© ITW Inc 2007
Fig 4
Ref.
No.
Replacement
Part No.
Description
Individual
Parts Req.
36 QS-190
End Cap
1
•
37
-
End Cap Gasket
1
38 PT-58
Bearing
1
39 Purchase Locally Machine Screw 1/4”-28 x 1/2”
1
40 QS-333
Front plate
1
•
41 PT-59-1-K10
End Plate Gasket Kit (kit of 10)
2
42 QS-189-1-K10
Dowel Pin (kit of 10)
4
43 QS-335
Body
1
•
44
-
Vane
4
45 QS-442
Rotor and Shaft Assy
1
46 QS-334
End Plate
1
47 QS-197
Bearing
1
68 QS-336
Oil Seal
1
•
Included in KK-5001-1 Air Motor Repair Kit.
end plates and rotor assembly. If scoring
exists, send unit to a Gast Authorized
Service Facility.
8. Check the bearings for signs of wear.
Replace the bearings at least every 2
years.
9. Place the drive shaft of the rotor
assembly (45) through the drive end
plate (46). Press the drive bearing (69)
onto the drive shaft using a bearing
pusher.
10. Using a suitable tool, lightly tap on inner
race of the drive end bearing (69) to
snug up rotor (45) to drive end plate
(46).
11. Check the vanes (44) for wear. If the
height of the vanes are less than
17.5mm (11/16”) then re-new the vanes.
Install new vanes (44), the angle cuts on
the vane face to the center of the rotor.
12. Place the end plate gasket (41) on the
body of dead end (40). If the original is
damaged, replace with a new one
supplied in the service kit.
13. Place the dead end plate (40) on the
body.
14. Install the dead end bearing (38) and
press into place with bearing pusher tool.
15. Install the dowel pins (42).
16. Fully tighten the remaining bolts to 8.5 -
11.3 Nm (75-100 in-lbs).
17. Set end clearance to the values at the
end of this section. lightly tap on the
inner race of the dead end bearing to
free up and center the rotor in the body.
18. Apply a small amount of grease to
bearing seal (47) and install the drive
end bearing seal by pressing flush with
bearing pushing tool from Tool Kit.
19. Reattach end cap (36) or (64) with new
gasket ((37).
20. Apply a few drops of 10w oil lubricant
into ports and rotate shaft by hand for a
few rotations.
End Clearances
Total clearance
.063mm (0.0025”)
Top end clearance
.038mm (0.0015”)
