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.
Service Valves
- Service valve for emptying and vacuum pumping.
- Service valve for emptying, vacuum pumping and filling of refrigerant.
There are two service valves, one on the low pressure side and one on the high pressure side. To avoid incorrect connection the valves have different dimensions.
Filling of refrigerant normally takes place on the low pressure side. The liquid refrigerant then stays in the accumulator and there is no risk that liquid refrigerant will flow to the compressor.
In an orifice system such as this, filling can also take place on the high pressure side.
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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