A/C Compressor Clutch Break-In

STANDARD PROCEDURE - A/C COMPRESSOR CLUTCH BREAK-IN

After a new compressor clutch has been installed, cycle the compressor clutch approximately twenty times (five seconds ON, then five seconds OFF). During this procedure, set the a/c heater control to the recirculation mode (Max-A/C), the blower motor switch to the highest speed position, and the engine speed at 1500 to 2000 rpm. This procedure (burnishing) will seat the opposing friction surfaces and provide a higher compressor clutch torque capability.