Remove cylinder head - Engine codes AEB, AJL: Audi 1.8 (AEB, AJL, ANB, APU)
Step-by-step remove cylinder head - Engine codes AEB, AJL for the Audi 1.8: factory workshop text. What to remove, in what order, and what to check after.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📋 Procedure
AJL ANB APU
Special tools and workshop equipment required
Pin T40011 (vehicles approx. 06.99 > only)
Engine in vehicle.
Lock carrier in service position =>Page
13-1
.
Notes:
Secure all hose connections with the correct hose clips (same as original equipment):
=> Parts List
All cable ties which are released or cut open when removing must be fitted in the same position when installing.
Observe or obtain radio code on vehicles with coded radio.
Disconnect earthing strap at battery with ignition switched off.
Drain coolant=> Page
19-5
.
Remove intake pipe => Page
15-9
.
Remove ribbed belt and tensioner for ribbed belt => Page
13-22
.
Remove the air filter cover -arrow-.
Disconnect wires/unplug connectors:
1 -
At solenoid valve for boost pressure control -N75
2 -
At ACF valve
3 -
At output stage -N122
4 -
At air mass meter
Disconnect hoses and remove air cleaner housing -arrows-.
Unplug connector -1- at coolant temperature sender -G2/-G62.
Where available, unplug connector -2- at intake air temperature sender -G18.
Unclip all wiring from cylinder head and move clear to one side.
Remove pipe of crank housing vent -1-.
Remove oil feed pipe from cylinder head -2-.
Remove heat shield -3-.
Unscrew exhaust turbocharger from exhaust manifold -4-.
Pull off coolant hose going to heat exchanger (heater unit) at back of cylinder head (first release retainers on connecting flange).
Remove upper toothed belt protection => Page
13-46
Position crankshaft on central bolt of toothed belt crankshaft into engine rotation direction to marking TDC cyl 1 -arrows-.
Vehicles approx. > 05.99:
Loosen toothed belt system with TORX key T45 -arrow below-.
Press toothed belt tensioner downwards.
Take toothed belt off camshaft sprocket.
Unscrew Torx bolt and pivot tensioner plate forwards.
Vehicles approx. 06.99>:
Turn toothed belt tensioner -1- with 8 mm Allen key slowly with constant pressure in direction of arrow until the bores -2- of piston and housing of the tensioning element are aligned.
In this position push pin T40011 in both bores.
Note:
Do not loosen bolt -3-.
Take toothed belt off camshaft sprocket.
All models:
Remove cylinder head cover => Page
15-21
.
Maintain sequence when loosening and tightening cylinder head bolts.
Remove cylinder head.
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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- Removing and installing intake manifold - engine codes ANB, APU, ARK, ATW
- Removing and installing toothed belt – Audi · 56 torque figures
- Removing engine – Audi A8 D3 · 41 torque figures
- Removing camshaft timing chain from camshafts – Audi A6/A7 C7 · 38 torque figures
- Installing engine – Audi A8 D4 · 36 torque figures
- Removing and installing camshaft timing chain · 29 torque figures
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.