09G TF-60SN CVT automatic transmission K1 drum clutch assembly
Key Specifications & Analysis
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Function: 1st/3rd/5th gear engagement in VW/Audi transverse 6-speed applications.
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Design:
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3-piston clutch pack (5 friction plates, 6 steel plates)
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Drum material: Hardened aluminum (Si-Cu alloy) with anti-wear coating
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Critical Tolerances:
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Plate clearance: 1.2–1.6mm (new), >2.0mm requires replacement
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Piston stroke: 2.8–3.2mm
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Failure Modes:
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Seal leaks (causing delayed engagement)
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Drum spline wear (>0.2mm play leads to shudder)
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Overheating (if ATF degraded, causing plate glazing)
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Note: Uses VW G 055 025 A2 fluid; common failure in high-mileage units.



09G TF-60SN CVT transmission clutch
,automatic transmission K1 drum assembly
,CVT clutch assembly with warranty
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