Assembly overview - poly V-belt drive with tensioning roller and air conditioner compressor — VW
Assembly overview - poly V-belt drive with tensioning roller and air conditioner compressor on VW: factory workshop procedure for engines CAYA, CAYB.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
🔧 Engine codes this applies to
📐 66 workshop diagrams for CAYA
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.
Assembly overview - poly V-belt drive with tensioning roller and air conditioner compressor
Poly V-belt
Check for wear.
Before removing, mark direction of rotation with chalk or felt-tipped marker pen.
Removing and installing
Chapter
.
Do not kink.
When installing, make sure it is properly seated on poly V-belt pulleys.
Tensioning roller for poly V-belt
Removing and installing
Chapter
.
Coat guide surfaces with lubricating paste; lubricating paste
Electronic Parts Catalogue
.
Vibration damper
With poly V-belt pulley.
Assembly through offset holes only possible in one position.
Installation position: hole in vibration damper must align over protrusion on crankshaft pulley.
Bolt
only use genuine bolts
Electronic Parts Catalogue
.
Renew after each removal.
10 Nm + 90°
Dowel sleeve
Check for correct seating in ancillary bracket.
Bolt
Renew after each removal.
20 Nm + 90°
Bolt
Renew after each removal.
50 Nm + 90°
Idler pulley
For toothed belt
Bolt
15 Nm
Idler pulley
For toothed belt
Bracket for ancillaries
Removing and installing
Chapter
.
High-pressure pump
Removing and installing
Chapter
.
Bolt
Renew after each removal.
Specified torque and tightening sequence
Fig.
.
Alternator
Removing and installing
Electrical system
Rep. gr.
27
Alternator; Removing and installing alternator
Bolt
20 Nm
Air conditioner compressor
Removing and installing
Heating, air conditioning
Rep. gr.
87
Air conditioner compressor; Removing and installing air conditioner compressor
Bolt
45 Nm
Dowel sleeve
Check for correct seating in ancillary bracket.
Bolt
Use a brush to coat guide surfaces of tensioning roller with solid lubricating paste; Solid lubricating paste
Electronic Parts Catalogue
.
Renew after each removal.
Specified torque and tightening sequence
Fig.
.
Tensioning roller for poly V-belt - specified torque and tightening sequence
Stage
Bolt
Specified torque/turning further angle
1.
Arrow
Screw in to contact by hand
The poly V-belt is tensioned
2.
Arrow
Turn until tensioning roller bolt reaches stop
The poly V-belt is tensioned further
3.
Arrow
Turn back 90°
4.
Arrow
30 Nm
5.
Arrow
Turn 90° further
Note
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.