Connections With Primary Sealing Valve (Ball Valve)
Before unscrewing the connection, connect the A/C service station and extract the refrigerant. Refrigerant circuit must be empty to avoid possible injury.
Connection with High-Pressure Valve
- Socket with internal thread (soldered in)
- O-ring (version and identification: black or colored. Refer to the Parts Information)
- Valve with an external thread and groove for the O-ring (identification: ball valve)
- Closure Cap Seal
- Closure Cap
Depending on the vehicle, there is not actually high pressure present at the high pressure side service connection during every A/C system operating condition (for example, on the Audi Q7 e-tron). Therefore the sensors installed in the refrigerant circuit must be used to check the A/C system function in these vehicles. Use the Vehicle Diagnostic Tester in the "Guided Fault Finding" function and refer to Refrigerant Circuit (vehicle-specific Service Information).
After connecting, carefully install the service coupling hand wheel just far enough into the quick-release coupling adapter until the valve is securely opened inside the service connection (pay attention to the pressure gauge, do not put too much pressure on the valve).
For removing and installing the valve -3- when the refrigerant circuit is discharged, for example, use an adapter from the Refrigerant Sockets :T10364 .
There are different versions of these valves (with internal or external threads). Therefore the tightening specifications may also differ. The currently used valves -3- with an M12 x 1.5 mm external thread have a tightening specification of 9 Nm +/- 1 Nm.
There are different versions of these valves and their respective closure caps. Be sure to use the correct valve version and the correct closure cap allocation. Refer to the Parts Information.
Connection with Low-Pressure Valve
- Socket with an external thread and groove for the O-ring (soldered in)
- O-ring (version and identification: black or colored. Refer to the Parts Information)
- Valve with Internal Thread
- Closure Cap Seal
- Closure Cap
Carefully install the service coupling hand wheel just far enough into the quick-release coupling adapter until the valve is securely opened in the service connection (pay attention to the pressure gauge, do not put too much pressure on the valve).
For removing and installing the valve -3- when the refrigerant circuit is discharged, for example, use an adapter from the Refrigerant Sockets :T10364 .
There are different versions of these valves (with internal or external threads). Therefore the tightening specifications may also differ. The currently used valves -3- with an M10 x 1.25 mm inner thread have a tightening specification of 9 Nm +/- 1 Nm.
There are different versions of these valves and their respective closure caps. Be sure to use the correct valve version and the correct closure cap allocation. Refer to the Parts Information.