Testing and Inspection for MX-5 Miata 16L DOHC HVAC Compressor Clutch
Compressor Clutch: Component Tests and General Diagnostics
Pressure Plate Inspection
1. Measure the clearance between the pressure plate and the rotor pulley.
(1) Set the A/C compressor on the level block.
(2) Fix a dial gauge on a magnetic base and set the measuring probe on the pressure plate surface.
(3) Alternately apply and remove battery positive voltage as shown in the figure. The clearance is the difference in the dial gauge readings.
(4) Compare the measured clearance with the specified clearance below.
Clearance: 0.35-0.65 mm { 0.014-0.025 in }
2. If not as specified, install shims to adjust the clearance.
Stator Inspection
1. Set the ohmmeter to the x 1000 Ohm range.
2. Verify that there is continuity between the stator connector and the A/C compressor body.
3. If there is no continuity, replace the stator.
