Toothed belt - exploded view — AUDI
Toothed belt - exploded view on Audi: factory workshop procedure for engines CAYB, CAYC, CBAA, CBAB. Full factory text, tools and checks.
Workshop procedure for AUDI — the factory write-up, straight from real workshop data.
📐 83 workshop diagrams for CAYB
Real factory drawings for this job — timing marks, bolt locations and routing. Locked in the free view.
📋 Procedure
ℹ️ Torque figures below come verbatim from workshop data — always cross-check against your vehicle's factory manual before final tightening.
Toothed belt - exploded view
Toothed belt
Before removing, mark direction of rotation with chalk or felt-tip pen
Check for wear
Removing
Chapter
Installing (adjusting valve timing)
Anchor
Idler roller
Nut
Renew stud
20 Nm
Stud
Renew
15 Nm
Nut
Renew stud
Renew nut
20 Nm +45°
Tensioning roller
Different versions
Fig.
Removal and installation involve taking out engine support
Chapter
Stud
Renew
15 Nm
Bolt
20 Nm
Idler roller
Bolt
25 Nm
Camshaft sprocket
Bolt
Slacken and tighten with
counterhold tool
T10051
100 Nm
Camshaft hub
Removing and installing
Chapter
“
Removing and installing camshafts
”
Plug
Toothed belt cover (rear)
Bolt
9 Nm
High-pressure pump hub
Removing and installing
Rep. gr.
23
Nut
Tightening torque
Rep. gr.
23
High-pressure pump sprocket
Bolt
Tightening torque
Rep. gr.
23
Idler roller
Bolt
Renew
50 Nm +90°
O-ring
Renew
Coolant pump
Removing and installing
Chapter
Bolt
Tightening torque
Item
Crankshaft sprocket
Contact surface between sprocket and crankshaft must be free of oil
Can only be installed in one position
Bolt
Renew
Slacken and tighten with
counterhold tool
3415
Do not additionally oil threads and shoulder
Tighten in three stages as follows:
1st stage: 180 Nm
2nd stage: Use rigid wrench to turn 90° further
3rd stage: Use rigid wrench to turn 45° further
Toothed belt cover (bottom and centre) - tightening torque
Tighten bolts
arrows
to 9 Nm.
Different tensioning roller versions
Depending on version, two different types of tensioning roller may have been installed. It is possible to switch between them. When making adjustments, check which type of tensioning roller is installed.
Tensioning roller version
A
:
Use
locking tool
T10265
for installation.
Make sure tensioning roller is positioned correctly in toothed belt cover.
To tension toothed belt, turn eccentric adjuster clockwise
arrow
.
Tensioning roller version
B
:
No locking tool is necessary for installation.
The tensioning roller is not located in the toothed belt cover.
To tension toothed belt, turn eccentric adjuster anticlockwise
arrow
.
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.