Exploded view - air supply unit and solenoid valve block — AUDI
Exploded view - air supply unit and solenoid valve block on Audi: factory workshop procedure. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Exploded view - air supply unit and solenoid valve block
Air intake with filter
Air intake pipe
Bolt
20 Nm
Bracket
Rubber mounting
Renew only as complete unit
Air supply unit (top section)
Removing and installing air supply unit without solenoid valve block
Chapter
Removing and installing air supply unit with solenoid valve block
Chapter
Renewing air supply unit (top section)
Chapter
If air supply unit is renewed,
adaptive suspension compressor relay
J403
must also be renewed. Fitting location
Current flow diagrams, Electrical fault finding and Fitting locations
Air pipe
Between solenoid valve block and air supply unit
Bolt
5 Nm
Always renew if removed
Solenoid valve block
To renew, remove air supply unit.
Removing and installing air supply unit with solenoid valve block
Chapter
Connection piece
3 Nm
Clean pipe connection before loosening.
Air will escape when this component is unscrewed
Protect pipe connection from dirt
O-ring
Always renew if removed
Piston ring
Rubber mounting
Renew only as complete unit
Bolt
9 Nm
Bracket
Bolt
4 Nm
Connection piece
3 Nm
Clean pipe connection before loosening.
Air will escape when this component is unscrewed
Protect pipe connection from dirt
Bolt
9 Nm
Nut
9 Nm
Bolt
9 Nm
Nut
9 Nm
Bolt
20 Nm
Bracket for compressor unit and solenoid valve block
Bolt
20 Nm
Clip
Wiring harness with
compressor temperature sender for adaptive suspension
G290
Air supply unit (bottom section)
Removing and installing air supply unit without solenoid valve block
Chapter
Removing and installing air supply unit with solenoid valve block
Chapter
If air supply unit is renewed,
adaptive suspension compressor relay
J403
must also be renewed. Fitting location
Current flow diagrams, Electrical fault finding and Fitting locations
Rubber mounting
Renew only as complete unit
Tightening torques
Component
Connection piece in solenoid valve block
3 Nm
Connection piece in residual pressure valve
5 Nm
Connection piece in accumulator
5 Nm
Connection piece in pipe connector (T-piece for accumulator)
3 Nm
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.
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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.