Cylinder head - Overview — AUDI
Cylinder head - Overview on Audi: factory workshop procedure for engines AAR, ASZ, ATD, AXR. 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.
ATD AXR
10 Nm
Install using locking compound
Locking compound
=> Parts List
15 Nm
100 Nm
To loosen and tighten use counterhold T10051
Hub
With sender wheel for Hall sender
-G40
To loosen and tighten use counterhold T10051
For removal use puller T10052
Detaching => Page 15-28
Removing
Cylinder head => Pages 15-39
Checking for distortion
=> Fig.15-6
Installing => Pages 15-55
After replacing, fill with fresh coolant
Cylinder head bolt
Replacing
Note sequence when loosening => Page 15-54
Note sequence when tightening => Page 15-58
Make sure that the plates -Item 15-88 are installed in the cylinder head
Cylinder head cover gasket
Renew if damaged or leaking
Before fitting gasket apply sealant at sealing points => Fig.15-7
Sealants
=> Parts List
Install notches into bores on cylinder head
Cylinder head cover
Removing and installing
=>Page 15-8
Trim cap
Cap
Seal
Renew if damaged or leaking
10 Nm
Note tightening sequence =>Removing and installing cylinder head cover, Page 15-8
Tandem pump
Removing and installing:
=> Fuel Supply - Diesel Engines; Repair group 20
Fuel Supply - Diesel Engines
20 Nm
10 Nm
Coolant flange
O-ring
Replacing
10 Nm
Sealing rings
Replacing
Cylinder head gasket
Renew => Removing cylinder head, Page 15-14.
Observe marking
=> Fig.15-6
After replacing, fill with fresh coolant
Hall sender -G40
For camshaft position
Fig.1
Checking cylinder head for distortion
Use knife edge, straightedge and feeler gauge to measure at several points.
Max. permissible distortion: 0.1 mm
Note:
The cylinder heads on a diesel engine must not be reworked.
Fig.2
Cylinder head gasket marking
Part-No. = arrow 1
Production control code = arrow 2 (can be disregarded.)
Holes = arrow 3
Note:
Cylinder head gaskets of different thicknesses are fitted depending on the amount of piston projection => Page 13-117. When replacing just the gasket, the new gasket should have the same markings.
Fig. 3
Sealing connections between bearing cap and cylinder head
Coat both edges on the sealing edges of bearing cap/cylinder head -arrows- on front...
...and on rear with a drop of sealing fluid (ø approx. 5 mm) -arrows-.
Sealants
=> Parts List
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 →Other AUDI procedures
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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.