Inspection Procedure
CMC CLUTCH™ by Harken Industrial™
3
If the wear indicators have been worn away, the unit must be retired.
2.
Functional Checks
2.1
Sheave Movement
Open the device and perform the following checks on the Sheave:
Ensure that the Sheave is able to rotate anti-clockwise and emits an audible clicking sound.
Check that the Sheave is not able to rotate clockwise.
Check that the Sheave is firmly attached to the Sheave Swing Arm without excessive axial movement,
i.e. >2mm.
2.2
Sheave Swing Arm Movement
With the device open, start with the Control Handle in the Stop position. Press the Sheave into the pinch
area and check that the Sheave is able to swing into the Chassis and make contact with the stainless
steel Friction Shoe.
Release the Sheave and move the Control Handle to the Stand By position while observing the position
of the Sheave and Sheave Swing Arm. The Sheave and Sheave Swing Arm should move to the left,
rotating anticlockwise until the rope-path laser etching becomes visible on the inner surface of the
Chassis.
With the Control Handle in the Stand By position, press on the Sheave and check that the Sheave is able
to swing into the Chassis and make contact with the stainless steel Friction Shoe.
Check that the Sheave Swing Arm is firmly attached to the Chassis and inspect the rivet on both sides for
damages.
