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59
For models DW100
Installation
Slide the clutch over the key on the shaft and tighten set screws. Be sure that shaft and key
are smooth. NEVER force or hammer clutch onto shaft. NEVER hit air seal shaft when install-
ing or removing clutch as air seal separation and/or breakage is likely to occur. Connect air line
to seal shaft. To prevent seal shaft from rotating, install a safety wire and connect to machine
frame or other nearby object. Allow some slack for seal movement. NEVER use rigid piping to
clutch.
MAINTAINING THE CLUTCH - 2 - MOTOR DRIVE MODELS ONLY
NOTE
Seals may be stiff at first, but will loosen up as clutch is
operated.
Cycle clutch at rest to confirm engagement and release. Check the set screws for tightness
after a short running period. Filtered, lubricated, regulated air should always be used to extend
clutch life and provide air seal lubrication. Clutch output torque is proportional to air pressure.
To replace discs or repair clutch.
For best results, remove clutch from shaft and hold in a vertical position. Remove retainer ring
from seal end of clutch and disassemble. If friction discs are worn, replace. Check steel drive
plates for foreign matter, burrs, or wear. The front and center drive plates must move freely on
drive hub hex for proper release. Check friction disc lugs in pulley slots for freedom of
movement. When assembling, lightly coat the drive hub hex with a moly type grease. Take
care not to get grease on the face of the steel drive plates or friction discs. Replace rubber “U”
cup in air cylinder if torn or worn from dirt in air supply. “U” cup should be lubricated with Dow
Corning #4 Compound or equivalent.
To remove air seal assembly, remove internal retainer ring. Hold air shaft and pull complete
assembly out of clutch. This should come out easily, but if there is some sticking, apply side
pressure with your hands or LIGHTLY tap as you pull.
IF DOWN TIME MUST BE KEPT TO A MINIMUM, it is recommended that a standard clutch
repair kit be kept on hand. Repair kits contain Friction Discs, “U” Cup, Retainer Rings, “O”
Rings, and Release Springs. It is further recommended that on installations requiring several
clutches, that a spare clutch be kept on hand.
For models DW150, DW200, DW300, DW400
The air operated clutch, gear reducer, and wash and extract motors work together to generate
the three (3) speeds. Maintenance of the clutch is simply providing a clean, regulated flow of air
to the clutch. Additional recommended maintenance procedures require maintaining an
adequate level of oil in the gear reducer as well as proper tension of drive belts.
