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Inspection Procedure
CMC CLUTCH™ by Harken Industrial™
2.3 Control Handle Movement
With the device closed, rotate the Control Handle through its range of motion from Stop to Anti-panic,
ensuring there is no excessive drag.
Rotate the Control Handle to the Stand By position and feel for a well-defined holding force at Stand By.
Rotate the device back and forth in this configuration and check that the Control Handle stays in the
Stand By position.
Hold the device in the left hand with the Moving Side Plate facing the palm. Use your fingers to press
the Sheave into the Chassis. While holding the Sheave into the Chassis, use your right hand to rotate the
Control Handle from Stand By to Release (Range) position. Continue to rotate the Control Handle
through the Release (Range) position and check that this action drives the Sheave away from the
Chassis, i.e. overcomes the pressure applied with the left hand.
Continue to rotate the Control Handle beyond the Release (Range) position while maintaining pressure
on the Sheave with the left hand until the Anti-panic position is reached. Check that the Sheave releases
and is once again able to be pressed into the Chassis.
Inspect the rivet in the center of the Control Handle for damage.
Ensure that the Control Handle is firmly attached to the Chassis and has minimal clearance with the
Chassis.
2.4 Side Plate Release Latch and Moving Side Plate Movement and Function
2.5 Check the Side Plate Release Latch for functionality by actuating it two times to open the Moving Side Plate.
Inspect the rivet of the Side Plate Release Latch for damages. Ensure that the Side Plate Release Latch is
firmly attached to the Moving Side Plate.
Check the (2) latch pins in the Chassis. Check that they are flush with the surface of the Chassis and
ensure they are not excessively worn in the area of engagement with the Side Plate Release Latch.
Close the Moving Side Plate by pushing it into the closed position. The Side Plate Release Latch should
make two successive clicks and securely lock the Moving Side Plate.
Re-open the Moving Side Plate and close it again, making sure that it is accurately guided into the
correct position.
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