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Overpressure valve, compressor, To remove and To fit, Z18XE

Overpressure valve, compressor, To remove and To fit, Z18XE

To remove


1. Air conditioning, draining

see method description Draining and filling the refrigerant .

2. Remove the refrigerant line as follows:


Important: Release any residual pressure in the installation by opening the refrigerant system, close lines and connections.

- Unscrew bolt (1)

- Pull away block joint, refrigerant line (2)

3. Remove the compressor's pressure relief valve:

- Unscrew the compressor pressure relief valve (3)


To fit


1. Fit the compressor's pressure relief valve:

- Use a new sealing ring

Instructions: Moisten the sealing ring with mineral oil (part no. 90 001 8100, catalogue no. 19 49 870) before fitting.

- Tighten the compressor's pressure relief valve (10 Nm)

2. Fit the refrigerant line as follows:


- Change the seal (2)

- Attach the refrigerant line (1)

- Tighten the bolt (20 Nm)

3. Air conditioning, draining and filling

see method description Draining and filling the refrigerant .