TorqFix

Connections with primary sealing valve (ball valve) — AUDI

Connections with primary sealing valve (ball valve) on Audi: factory workshop procedure. Full factory text, tools and checks.

Workshop procedure for AUDI — the factory write-up, straight from real workshop data.

factory workshop text

📋 Procedure

ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.

Connections with primary sealing valve (ball valve)
WARNING
Before unscrewing the connection, connect the air conditioner service station and extract refrigerant. The refrigerant circuit must be empty; danger of injury.
Connection with high-pressure valve
Connection with internal thread (soldered in)
O-ring (version and identification: black or coloured
Electronic parts catalogue
)
Valve with external thread and groove for O-ring (designation: ball valve)
Seal for sealing cap
Cap
Note
Following connection, carefully screw the handwheel of the service coupling into the quick-release coupling adapter to the extent required to reliably open the valve in the service connection (observe the pressure gauge; take care not to open the valve too far).
To remove and install the valve
3
with the refrigerant circuit drained, make use of an adapter from the
socket
T10364
for example.
There are different versions of these valves (with internal or external thread) and the tightening torques may therefore also differ. For the valves
3
currently in use (external thread M12 x 1.5 mm) the tightening torque is 9 Nm +/- 1 Nm.
There are different versions of these valves and the corresponding sealing caps. Note the correct version of the valve and correct assignment of the sealing cap
Electronic parts catalogue
.
Connection with low-pressure valve
Connection with external thread and groove for O-ring (soldered in)
O-ring (version and identification: black or coloured
Electronic parts catalogue
)
Valve with internal thread
Seal for sealing cap
Cap
Note
Carefully screw the handwheel of the service coupling into the quick-release coupling adapter to the extent required to reliably open the valve in the service connection (observe the pressure gauge; take care not to open the valve too far).
To remove and install the valve
3
with the refrigerant circuit drained, make use of an adapter from the
socket
T10364
for example.
There are different versions of these valves (with internal or external thread) and the tightening torques may therefore also differ. For the valves
3
currently in use (internal thread M10 x 1.25 mm) the tightening torque is 9 Nm +/- 1 Nm.
There are different versions of these valves and the corresponding sealing caps. Note the correct version of the valve and correct assignment of the sealing cap
Electronic parts catalogue
.

Is this your exact engine?

TorqFix answers live for your specific car — tell it the engine code and it serves the matching sequence, torque figures and wiring for that exact variant.

Ask about my car →

Who makes these pages, and how

TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.

The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.

Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.

Seen a figure that does not match your manual? Write to us — we correct it and note when. support@torqfix.com

The story behind TorqFix →

Workshop data on this page last updated 20 Sep 2026.