Refrigerant Circuit Connections With Switch Valve

WARNING: This page is about a different variant/trim than selected.

NOTE:

Switching pressures, removing and installing switches as well as switch arrangement and version. Refer to Refrigerant Circuit (vehicle-specific repair information).

There are different threads for the switch on the high pressure and low pressure sides.
Only valves and seals that are resistant to refrigerant R1234yf and refrigerant oil must be installed. Refer to the appropriate Electronic Parts Information.

Fig 1: Exploded View Of Refrigerant Circuit Connections With Valve For Switches
Courtesy of AUDI OF AMERICA, LLC

A - Connection (soldered in)

B - Seal

C - Valve (with Seal)

NOTE:

To remove and install the valve insert -C- when the refrigerant circuit is discharged, use, for example, an adapter from the Refrigerant Sockets:T10364 (for the tightening specification, refer to QUICK-RELEASE COUPLING CONNECTIONS ON REFRIGERANT CIRCUIT ).

There are different versions of these valves and therefore there are different tightening specifications. Valve insert -C- with a VG5 (5.2 x 0.7 mm, tire valve) thread has a tightening specification of 0.4 Nm ± 0.1 Nm; a valve insert with a M6 x 0.75 mm thread has a tightening specification of 0.9 Nm ± 0.1 Nm, and a valve insert with a M8 x 1.0 mm thread has a tightening specification of 2.0 Nm ± 0.2 Nm.