Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Compressor Inspection




- Use an ohmmeter to check thermal switch for continuity. If it is no continuity, replace it.




- Check pressure plate and rotor for wear and oil soaked conditions respectively.
- Check clutch bearing for noise, wear and grease leakage.
- Measure stator coil for resistance at 20 °C (68 °F).

Standard Resistance: 2.9 - 3.8 ohm

If the measured resistance does not remain within above tolerance, replace coil.