Compressor Clutch: Testing and Inspection

A/C Compressor Belt Pulley and Clutch Plate Gap, Checking

• The gap dimension must be within the permissible range over the entire circumference.

• Gap dimension may also be measured with A/C compressor installed.

• If the gap dimension is outside of the permissible range, first remove the clutch plate and then remove or insert spacers to get to attain the correct dimension.

- Turn off the ignition.

- Perform the preliminary work as for replacing the belt pulley. Refer to => [ Preparation for Replacement ] A/C Compressor Belt Pulley.

• Tighten the clutch plate - C - on the A/C compressor shaft - E - to 30 Nm.






- Measure the dimension "1" between the belt pulley - B - and the clutch plate - C - with a depth gauge - F - at 3 places on the clutch plate - C - circumference and then write down the measured values.

- Apply 12 volts to the 1-pin connector - A -.

- Connect the ground to the compressor housing - D -.

- Measure the dimension "2" between the belt pulley - B - and the clutch plate - C - with a depth gauge - F - at 3 places on the clutch plate - C - circumference and then write down the measured values.

- Calculate the gap dimension using dimensions "1" and "2".

Gap dimension specified value: 0.4 to 0.6 mm (up to 0.8 mm on an A/C clutch already used).