Connections With SCHRADER Valve (Needle Valve)

WARNING: This page is about a different car, the 2024 Audi SQ7, 2024 Audi Q7, 2023 Audi SQ7, and 2023 Audi Q7. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Exploded View Of Connections With Schrader Valve

Courtesy of AUDI

-A- Service connection (soldered in)
-B- Valve insert (Schrader valve or needle valve)
-C- O-ring (belonging to the valve)
-D- Closure cap with seal

NOTE:

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).

To remove and install the valve insert -B- when the refrigerant circuit is discharged, use, for example, an adapter from the Refrigerant Sockets:T10364 .

Tighten the valve insert -B- very carefully because the tightening specification is very small.

There are different versions of these valves and therefore there are different tightening specifications. Valve insert -B- with VG5 (5.2 x 0.7 mm, tire valve) threads 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.

There are different versions of these valves, valve inserts and their respective closure caps. Be sure to use the correct valve insert version and the correct closure cap allocation. Refer to the appropriate Electronic Parts Information.