77-2475-R5.2 (9/2017)
10 / 12
EN
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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.
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.
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.
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.
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.
NOTE
The rotor must NOT rub on either end plate.
NOTE
DO NOT remove drive end plate bolts or drive end plate.
NOTE
Take care as to not damage shims or shim surfaces
when removing.