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Troubleshooting Guide for Clutches, Brakes and Clutch/Brakes |
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Problem |
Possible Cause |
Solution |
Unit does not supply rated torque when air is supplied to the unit. |
Unit shaft is not properly secured to mounting shaft. |
Replace key in keyway and/or tighten set screws. |
| Proper air pressure is not supplied to the unit. |
Ensure that air supply lines are free of kinks or debris and restore proper air flow. |
| Friction disks or brake pads are not operating properly. |
Ensure friction disks and brake pads are free of debris and/or contamination. Have the unit rebuilt or replaced. |
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| Problem |
Possible Cause |
Solution |
Unit provides torque when no air is supplied to the unit. |
Air is not allowed to be relieved from the unit. |
Ensure that air supply lines are free of kinks or debris and restore proper air flow, and/or replace the air exhaust valve. |
| Debris has entered the unit causing constant engagement of friction disks or brake pads. |
Remove debris to restore slight movement to friction disks or brake pads when no air is supplied to the unit and/or have the unit rebuilt or replaced. |
| Air solenoid valves may not be positioned properly to allow air to be relieved from the unit. |
Correct air logic circuit so the valves are operating properly. |
| Brake springs are not supplying sufficient braking force due to spring breakage and/or spring fatigue. |
Have the Clutch/Brake unit rebuilt or replaced. |
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