sonnax-black Facebook-color LinkedIn-color maillink printlink r_and_r_only SERVOFIX-logo-web Twitter-color VBFIX-logo-web video-logo-web warranty_only Youtube-color

Symptoms:

  • Overheated fluid, bushings & converter
  • Poor shift quality
  • Harsh Reverse
  • TCC slip
  • TCC surge

Cause:

Bore wear at the spring end of the valve allows the SLT circuit and regulated converter pressure to cross leak. Bore wear at the balance end of the valve reduces converter and lube flow. Boost sleeve wear results in converter pressure bleeding into and elevating EPC.

Correction:

The Sonnax valve and boost assembly corrects circuit pressure loss and restores control over the secondary pressure regulator valve and boost valve function.

09D, TR-60SN

Secondary Pressure Regulator Valve Kit
Part No. 25741-11K


You need this if... View Instructions

A worn secondary pressure regulator valve in vehicles with an Aisin AW TR-60SN, VW/Audi 09D transmission can cause several problems. Overheating the fluid, bushings, and torque converter can all be caused by a worn secondary pressure regulator valve. Drivability issues include harsh reverse engagement, TCC slip resulting in RPM surge, and poor shift quality. Sonnax kit 25741-11K is designed to correct the pressure outputs from the secondary pressure regulator valve and fix these drivability issues.

  • The hard-coat anodized aluminum valves are wear-resistant for extended life
  • The boost valve sleeve is highly wear-resistant to increase life
  • Annular grooves have been added to the secondary pressure regulator valve to better center the valve in the bore
  • The secondary pressure regulator valve has additional spool length to increase valve support
  • Secondary Pressure Regulator Valve
  • Boost Valve
  • Boost Sleeve

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.

Aisin AW TR-60SN Valve Body Layout

Tr 60sn vbl thumb

January 26, 2015

Aisin AW TR-60SN (VW/Audi 09D) Solutions

Topics: Diagnostics And Theory Transmission Aisin AW VW/Audi 09D Transmission 09G, 09K, 09M Transmission TR-60SN Transmission TF-60SN Transmission

Read Now

September 30, 2005

Anatomy of a Transmission: Oil Flow in the Pump-PR-Converter-Cooler Lube Circuits

Gregg Nader

Topics: Diagnostics And Theory Transmission

Read Now
  • 25741 11k combo
  • 25741 11k  1

You need this if...

A vacuum test fails to yield the indicated 16 or 18 in-hg or greater, depending on the port tested as shown, or if visual wear is detected.

  • 25741 11k