Tool Required VB-FIX Required
- Chatter on acceleration
- Distress on pulley #1, #2 & chain surface
- Ratio errors
Bore wear at the UV reduction valve allows pressure loss that compromises pulley control.
Renew critical clearances and regain pulley control by reconditioning the bore and installing Sonnax oversized UV reduction valve kit.
Oversized UV Reduction Valve Kit
- Damper Pin
Problems caused by UV reduction pressure leakage in Audi 01J and 01T units are common. As leakage increases, reaction time drops and pressure decreases at pulley #1 or pulley #2. Without proper control pressure and reaction timing, load on the chain decreases and slippage will occur. In other instances, the UV reduction damper pin may break causing further damage to the bore and end plug. The Sonnax oversized UV reduction valve kit 33741B-08K restores the critical hydraulic clearance between the valve and bore and prevents future wear with highly wear-resistant materials and annular grooves.
- Valve is hardcoat anodized to reduce wear
- Restores proper hydraulic sealing and OE pressure control
- Required Tool
- Related Parts
- You need this if...
- Related Tech Resources
- Valve Body Layouts
You need this if...
Vacuum testing at the port(s) indicated fails to hold the recommended minimum in-Hg, or if wear is visually detected.
Click here to view PDF if instructions do not appear below.
Valve Body Layouts
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