Tool Required VB-FIX Required

Printpartsummary
Symptoms:
  • Chatter on acceleration
  • Distress on pulley #1, #2 & chain surface
  • Ratio errors
Cause:

Bore wear at the UV reduction valve allows pressure loss that compromises pulley control.

Correction:

Renew critical clearances and regain pulley control by reconditioning the bore and installing Sonnax oversized UV reduction valve kit.

Tool Required VB-FIX Required

01J, 01T

Oversized UV Reduction Valve Kit

Part No.

33741B-08K

Oversized UV Reduction Valve Kit
  • 33741b-08k_combo

  • Oversized UV Reduction Valve Kit

  • 33741b-08k_measure

Small_33741b-08k_combo Small_33741b-08k Small_33741b-08k_measure

01J, 01T

Oversized UV Reduction Valve Kit

Part No. 33741B-08K

  • Valve
  • Damper Pin

Complaint:

  • Chatter on acceleration
  • Distress on pulley #1, #2 & chain surface
  • Ratio errors

Cause:

Bore wear at the UV reduction valve allows pressure loss that compromises pulley control.


Correction:

Renew critical clearances and regain pulley control by reconditioning the bore and installing Sonnax oversized UV reduction valve kit.

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 Tools

Related Parts

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.

  • Test Locations
  • Test Locations

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Valve Body Layouts

Sonnax valve body layouts provide a detailed overview of individual units making it quick and easy to determine what’s available for the specific valve body you’re working on. See all Sonnax valve body layouts.

Valve Body Layout Audi 01J
Valve Body Layout Audi 01T

Related Tech Articles

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