Magnum Venus Plastech APS E-FIT-F-CMB-APS-6 - Manual (Page 12)

RC-1101-1 ASSEMBLY OF AIR MOTOR
1. Remove Burrs: With fine file or emery cloth.
2. End Clearance: Average end clearance .0015” to .002”. To get end clearance take micrometer
reading of body minust micrometer readin gof rotor assembly, add gaskets (if needed) to get re-
quired clearance, assemble air motor with gaskets on both drive and dead end.
3. Select End Plate (Drive): End plate with no threads in hub.
4. Assemble Rotor and End Plate (Drive): Position bearing on shaft and with bearing pusher, press
bearing into end plate hub.
5. Assemble Bearing: Position bearing on shaft and with bearing pusher, press bearing into end
plate hub.
6. Position Rotor Assembly: Using inner-race tapper, tap inner-race of bearing until slight drag
between end plate and rotor assembly.
7. Position Body: Long port is exhaust, small hole drilled through body, intersecting hole drilled from
top is intake. For clockwise rotation small hole is on your right. For counterclockwise rotation small
hole is on your left.
8. Assemble Gasket (Drive): Take approximate 1/2 total gasket needed for end clearance. As-
semble on drive end, hold in position with few drops of oil, punch hole in gasket over air passage.
9. Assemble End Plate, Rotor and Body: Position end plate and rotor in body, over gasket, as-
semble screws, snug, oil hole in end plate to top of body.
10. Top Clearance: Place parts in align-up fixture, resting on hub. Using a .0015” shim, have a snug
fit between tightest segment and top of body.
11. Assemble Vanes: With angle on vane toward shaft.
12. Assemble Gasket (Dead): Take balance of fasket from overall clearance, hold in position with few
drops of oil. Punch hole in gasket over air passage.
13. Select End Plate (Dead): End plate with threads in hub. When assembled, kidney ports in end
plates must be on intake side.
14. Assemble End Plate (Dead): Position end plate over shaft, place on body, assemble screws,
snug, loosen one turn.
15. Assemble Bearing: Place bearing on shaft, using bearing pusher, position bearing in end plate.
16. Check Movement of End Plate: End plate must move back and forth. If no movement, top clear-
ance is not in center-reset top clearance. If moves, snug screws, remove from fixture, tighten
screws.
17. Adjust End Clearance: Rotor is snug against drive end plate. Using inner-race tapper, tap inner-
race of bearing (very lightly) in dead end plate until rotor is free. Push and turn, pull and turn, until
no drag on either end plate. For finer adjustment start air motor, adjust by sound.
18. Assemble Seal: Press into end plate, small amount of grease on seal.
19. Assemble End Cap: Into end plate.
20. Test Air Motor: For normal duties.