Removing and installing poly V-belt for viscous fan — VW
Removing and installing poly V-belt for viscous fan on VW: factory workshop procedure for engines CKTB, CKTC, CKUB, CKUC.
Workshop procedure for VW — the factory write-up, straight from real workshop data.
📋 Procedure
Removing and installing poly V-belt for viscous fan
Special tools and workshop equipment required
Torque wrench
V.A.G 1331
Open jaw spanner
3312
Not illustrated
Note
The
assembly aid for poly V-belts
T50045
is included in the repair set
Electronic Parts Catalogue
.
Special tools and workshop equipment required
Assembly aid for poly V-belts
T50045
Note
The viscous fan poly V-belt must be renewed after every dismantling operation and may therefore be cut to remove it.
Removing
Remove any noise insulation
General body repairs, exterior
Rep. gr.
66
Noise insulation
.
Remove radiator grille
General body repairs, exterior
Rep. gr.
50
.
Remove front bumper
General body repairs, exterior
Rep. gr.
63
Bumpers
.
Remove charge air cooler
Chapter
.
Remove viscous fan
Chapter
.
WARNING
Under no circumstances may the engine be turned counter to its direction of rotation
arrow B
at the viscous fan shaft
arrow
. This can result in the shaft being loosened and the vehicle breaking down. When tightening the viscous fan bolt, only counterhold in the engine's direction of rotation
arrow A
using the
open-end spanner
3312
.
Cut through viscous fan poly V-belt
1
using commercially available side cutters
arrow
.
Remove poly V-belt.
Installing
Fit new poly V-belt
1
on viscous fan pulley.
Mount
poly V-belt fitting tool
T50045
on vibration damper.
Tension poly V-belt
1
in
direction of arrow
using
poly V-belt fitting tool
T50045
.
Turn engine in
direction of arrow
at crankshaft, thereby fitting poly V-belt
1
onto vibration damper.
The remaining installation steps are carried out in the reverse sequence.
WARNING
Under no circumstances may the engine be turned counter to its direction of rotation
arrow B
at the viscous fan shaft
arrow
. This can result in the shaft being loosened and the vehicle breaking down. When tightening the viscous fan bolt, only counterhold in the engine's direction of rotation
arrow A
using the
open-end spanner
3312
.
Specified torques
Lock carrier; Assembly overview - lock carrier
General body repairs, exterior
Rep. gr.
50
Lock carrier; Assembly overview - lock carrier
Front bumper; Assembly overview - front bumper
General body repairs, exterior
Rep. gr.
63
Front bumper; Assembly overview - bumper cover
Noise insulation; Assembly overview - noise insulation
Rep. gr.
66
Assembly overview - noise insulation
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.