Compressor HVAC: Adjustments

Deflection Method
1. Apply a force of 98 N (10 kg, 22 lb), and measure the deflection between the A/C compressor and the crankshaft pulley.

A/C Compressor Belt
Used Belt: 7.5 - 10.5 mm (0.30 - 0.41 in)
New Belt: 5.0 - 7.0 mm (0.20 - 0.28 in)

Note these items when adjusting belt tension:
- If there are cracks or any damage evident on the belt, replace it with a new one.
- "Used belt" means a belt which has been used for five minutes or more.
- "New belt" means a belt which has been used for less than five minutes.

2. Loosen the pivot bolt of the idler pulley bracket and the locknut of the adjusting bolt.
3. Turn the adjusting bolt to get proper belt tension.
4. Retighten the pivot bolt of the idler pulley bracket and the locknut of the adjusting bolt.
5. Recheck the deflection of the A/C compressor bolt.




Tension Gauge Method
1. Attach the special tool to the A/C compressor belt as shown below, and measure the tension of the belt.

A/C Compressor Belt
Used Belt: 390 - 540 N (40 - 55 kg, 88 - 120 lb)
New Belt: 740 - 880 N (75 - 90 kg, 170-200 lb)

Note these items when adjusting belt tension:
- Follow the manufacturer's instructions for the belt tension gauge.
- If there are cracks or any damage evident on the belt, replace it with a new one.
- "Used belt" means a belt which has been used for five minutes or more.
- "New belt" means a belt which has been used for less than five minutes.

2. Loosen the pivot bolt of the idler pulley bracket and the locknut of the adjusting bolt.
3. Turn the adjusting bolt to get proper belt tension.
4. Retighten the pivot bolt of the idler pulley bracket and the locknut of the adjusting bolt.
5. Recheck the tension of the A/C compressor belt.