Mazda MX-5 Miata Sport 2007 Manual page 1451

Fig. 16: Inserting 1 MM Thick Shim Into Shaft
Courtesy of MAZDA MOTORS CORP.
MAGNETIC CLUTCH ADJUSTMENT
1. Measure the clearance around the entire circumference between the pressure plate and A/C compressor
pulley using a thickness gauge,
2. Inspect the clearance.
If not within the specification, adjust the clearance by changing the shim or the number of shims.

Magnetic clutch clearance
0.3-0.6 mm {0.012-0.023 in}
2007 Mazda MX-5 Miata Sport
2007 HVAC Control System - MX-5 Miata