The compressor drive torque is transmitted to the compressor shaft via the bolted connection of the clutch disc "C" on the compressor shaft. If, during operation of the air conditioner compressor, the clutch disc "B" has screwed onto the compressor shaft so tightly that it cannot be removed (a 7 "A" Allen key may not transmit the required tightening torque), the compressor must be replaced.
Checking the clearance between the belt pulley and the clutch disc
Note: The clearance must be within the permissible range around the entire perimeter of the disc. The clearance value can also be measured with the air conditioning compressor installed. If the clearance value is outside the permissible range, remove the clutch disc and adjust the clearance value by removing or installing spacers.
Switch off ignition. Perform preparatory work when replacing the belt pulley. Clutch disc "C" is tightened to the required tightening torque (30 Nm) on the air conditioning compressor shaft "E". Using template "F", measure the distance "1" between the belt pulley "B" and the clutch disc "C" at 3 points along the perimeter of the clutch disc "C" (record the measured value). Apply 12 V to the first connector "A". Apply ground to the compressor body "D".
Using template "F" measure the distance "2" between belt pulley "B" and clutch disc "C" at 3 points around the perimeter of clutch disc "C" (record the measured value). Calculate the gap size based on the measured values (dimensions "1" and "2"). Specified gap value: 0.4...0.6 mm (up to 0.8 mm for used magnetic coupling).