5
FORM NO. L-20016-U-0305
FIGURE 8
TYPICAL CLUTCH-BRAKE
Sheave
Ball
Bearing
Hub
Compression
Spring
Friction
Disc
Friction
Facing
Ball
Bearing
Air
Chamber
O-ring
Seals
Friction
Disc
Ball
Bearing
Piston Air
Chamber
Friction
Facing
Piston
Compression
Spring
Shoulder
Bolt
PROBLEM
PROBABLE CAUSE
SOLUTION
Failure to engage.
Air not getting to the Clutch-Brake due to a control
valve malfunction.
Check for control valve malfunction and replace
valve if necessary.
Air leaks.
Replace air lines.
Lack of lubrication on the Hub spline or in the Air
Chamber.
Lubricate Hub spline and/or Air Chamber.
Rigid piping instead of flexible air lines.
Replace rigid piping with flexible air lines.
Failure to disengage.
Unexhausted air due to a control valve malfunction.
Check for control valve malfunction and replace
if necessary.
Friction lock due to a lack of lubrication on the Hub
spline or in the Air Chamber.
Lubricate Hub spline and/or Air Chamber.
Rigid piping instead of flexible air lines.
Replace air lines with flexible air line tubing.
Weak or broken Compression Springs.
Replace Compression Springs.
Loss of torque.
Air Leaks.
Replace air lines.
Overheating (fading).
Check manufacturing specifications to be certain
Clutch-Brake is suitable for the application.
Overlap or simultaneous engagement of
the clutch and brake when switching.
Overlap can be verified by motor
amperage readings when cycling with
the Clutch-Brake versus clutch (brake
disconnected). Higher draw with the
Clutch-Brake indicates overlap.
Inadequate controls.
Install controls meeting the specification of
Clutch-Brake.
Air line too long between the valve and the Clutch-
Brake.
Shorten air line between the valve and Clutch-
Brake.
Air pressure too high.
Reduce the air pressure.
Lack of quick exhaust valves.
Install quick exhaust valves.
TROUBLESHOOTING
®
DIST. AUTORIZADO
MEX (55) 53 63 23 31
QRO (442) 1 95 72 60
MTY (81) 83 54 10 18
[email protected]
