Service Connection Differences, Depending On Refrigerant (R134A Or R1234YF): Notes

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Special tools and workshop equipment required

Refrigerant Sockets:T10364

NOTE:

Only use valves and connections that are resistant to the respective refrigerant (R134a and/or R1234yf) and the corresponding refrigerant oil. Refer to the Parts information.

The service connections on the refrigerant circuits are designed so that only the service couplings provided for the intended refrigerant (R134a or R1234yf) can be connected.

These illustrations show service connections that have a Schrader valve (needle valve or push pin) installed in them. Depending on the vehicle version, the refrigerant, etc., service connections with a primary sealing valve (ball valve) may also be installed (other technology).

Allocation in the vehicle and on the refrigerant circuit. Refer to COMPONENT LOCATION OVERVIEW - COMPONENTS OUTSIDE OF PASSENGER COMPARTMENT and SYSTEM OVERVIEW - REFRIGERANT CIRCUIT .

Different connections (outer diameter) for high pressure and low pressure side.

Before removing the valves or valve inserts, discharge the refrigerant circuit. .

Valve, removing and installing at service connection on low and high pressure side. Refer to VALVE, REMOVING AND INSTALLING AT SERVICE CONNECTION ON LOW AND HIGH PRESSURE SIDE .

Always install the closure caps with a seal.