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ASSEMBLY INSTRUCTIONS: BINKS MODEL 207-12393 CHOPPER AIR MOTOR ASSEMBLY
1. Remove the end cap.
2. Remove dead end plate bolts.
3. Remove dead end plate.
Take care as to not damage shims or shim surfaces
when removing.
4. Remove rotor using an arbor press.
5. Remove vanes.
6. Remove shaft seal and bearings from drive end
plate and bearing from dead end plate.
DO NOT remove drive end plate bolts or drive end plate.
7. Clean parts. Check for scoring on the end
plates and rotor assembly. If scoring exists,
replacing the air motor is recommended.
8. Place a new cam ring between the rotor and the
drive end plate.
9. Place the drive shaft of the rotor assembly through
the drive end plate. Press the drive bearing onto the
drive shaft.
10. Lightly tap on inner race of the drive bearing to
snug up rotor to drive end plate.
11. Install new vanes as required. The angle cuts
on the vane face to the center of the rotor.
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NOTE
NOTE
12. Place the proper end plate gasket on the body
of dead end. If the original is damaged, replace
with a new one supplied in the Repair Kit (106-
1265).
13. Place the dead end plate on the body.
14. Install the dead end bearing and press into
place with an arbor press.
15. Fully tighten the remaining bolts to 75-100
in-lbs.
16. Set end clearance as required:
Total end clearance: .002 in. (.05 mm)
Top clearance: .0015 in. (.038 mm)
Lightly tap on the inner race of the dead end
bearing to free up and center the rotor in the
body.
The rotor must NOT rub on either end plate.
17. Apply a small amount of grease to bearing seal
and install the drive end bearing seal by
pressing flush.
18. Reattach end cap.
19. If the air motor is lubricated, apply a few drops
of 207-11155-1 lubricant into ports and rotate
shaft by hand for a few rotations.
10 / 12
NOTE
77-2475-R7 (1/2022)
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