Removing and installing poly V-belt pulley, with freewheel on alternator, Bosch — VW
Removing and installing poly V-belt pulley, with freewheel on alternator, Bosch on VW: 14 steps. What to remove, in what order, and what to check after.
Workshop procedure for VW — the exact step sequence and torque figures, straight from real workshop data.
🧭 Before you start
Fits: platform code 121
- Special tools named: torque wrench
📋 Procedure
- Remove alternator .
- Clamp alternator in a vice at securing points.
- Remove protective cap (where there is one) from poly V-belt pulley with freewheel.
- Insert multipoint adapter T10474(1) into poly V-belt pulley and fit an open-end spanner (width across flats 17 mm) to it.
- Insert hexagon socket or TORX socket (2) into alternator shaft.
- Turn generator shaft clockwise (left-handed thread) to loosen it, counterholding it with the open-end spanner.
- Hold poly V-belt pulley with freewheel stationary with your hand and turn alternator shaft until poly V-belt pulley with freewheel can be removed.
- Release socket drive (1) and pull off grip (2).
- Turn torque wrench grip (2) 180° and reinsert socket drive.
- Set turning direction of torque wrench to anti-clockwise at socket drive.
- First screw poly V-belt pulley with freewheel onto alternator shaft by hand as far as possible.
- Insert multipoint adapter T10474(1) into poly V-belt pulley and fit an open-end spanner (width across flats 17 mm) to it.
- Insert hexagon socket or TORX socket (2) into alternator shaft.
- Turn alternator shaft anti-clockwise using torque wrenchV.A.G 1332(3) in order to tighten poly V-belt pulley with freewheel.
Other VW procedures
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- Removing and installing camshaft – VW Golf Cabriolet · 47 torque figures
- Adjusting valve timing – VW Passat B5 · 83 torque figures
- Removing and installing camshafts – VW Passat B6 · 39 torque figures
- Removing and installing coolant pump · 53 torque figures
- Removing and installing high-level brake light M25, Golf GTI/GTD/Blue Motion from 6/2009
- Removing and installing engine control unit J623, Polo
- Removing and installing starter, 1.4 l, 118 kW TSI engine, dual clutch gearbox (DSG) DQ200-7F
- Removing and installing cigarette lighter U1 – VW
- Repairing threaded connections
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.