COMPRESSOR DRIVE BELT ADJUSTMENT
Refer to SPECIFICATIONS & DRIVE BELT ROUTING - EXCEPT EVOLUTION
ADJUSTMENT
- Select a quiet area for testing. Duplicate conditions as much as possible. Switch compressor on and off several times to clearly identify compressor noise. To duplicate high ambient conditions (high head pressure), restrict air flow through condenser. Install manifold gauge set to make sure discharge pressure doesn't exceed 2,070 kPa (300.2 psi).
- Tighten all compressor mounting bolts, clutch mounting bolt, and compressor drive belt. Check to assure clutch coil is tight (no rotation or wobble).
- Check refrigerant hoses for rubbing or interference that can cause unusual noises.
- Check refrigerant charge. (Refer to «PRESSURE SWITCH CHECK»(ref-183658-S06177086362005081800000) .)
- Recheck compressor noise as in Step 1 .
- If noise still exists, loosen compressor mounting bolts and retighten. Repeat Step 1 .
- If noise continues, replace compressor and repeat Step 1 .
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>> D << AIR GAP ADJUSTMENT
Apply voltage from the battery to the magnetic clutch and check that the clutch air gap is inside the standard value. If outside the standard value, use a shim to adjust the gap.
- Standard value: 0.3 - 0.5 mm (0.012 - 0.020 inch)
Note. The shims are available in 0.05 mm steps across the thickness range 0.35 - 0.70 mm, and in 0.1 mm steps of thickness.
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- Dip the metal part of the refrigerant temperature switch into engine oil and increase the oil temperature using a gas burner or similar. CAUTION: Do not heat more than necessary.
- When the oil temperature reaches the standard value, check the continuity between the terminals.