Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
A/C Compressor Without Magnetic Clutch
The engine drives the A/C compressor via a ribbed belt.
Overload protection (shear) installed in the A/C compressor ribbed belt pulley releases when the compressor stops and protects the ribbed belt pulley from being overloaded.
The A/C compressor extracts the refrigerant gas from the evaporator, compresses it and relays it to the condenser.
The A/C compressor contains refrigerant oil, which can be mixed with refrigerant R134a under any temperature.
The type plate lists the type of refrigerant required for the A/C compressor. A regulator valve regulates pressure within the specified range (control characteristics) on the low pressure side.
On this A/C compressor, the control valve is activated from outside.
The engine should only be started if the refrigerant circuit is completely assembled. Refer to REFRIGERANT CIRCUIT, GENERAL PRECAUTIONS .
The A/C compressor is equipped with a protected oil supply, this prevents A/C compressor damage in the event that the system is empty. This means that approximately 40 to 50 cm3 of refrigerant oil remains in the A/C compressor.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.