Symptoms:

  • Low line rise in Drive
  • Low line rise in Reverse
  • High line pressure in Reverse
  • Overheated fluid & TCC lining
  • Bushing failure

Cause:

Wear at the inner bore results in excess pressure and reduced cooler/converter flow. Boost sleeve wear allows oil loss, resulting in poor line rise.

Correction:

Sonnax oversized pressure regulator valve and boost assembly allows the valve body bore to be restored to normal operating condition.
  • 09G, 09K, 09M, 6F21WA, TF-60SN Oversized Pressure Regulator Valve & Boost Valve Kit 15741-01K
  • 09G, 09K, 09M, 6F21WA, TF-60SN Oversized Pressure Regulator Valve & Boost Valve Kit 15741-01K

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.

09G, 09K, 09M, 6F21WA, TF-60SN Oversized Pressure Regulator Valve & Boost Valve Kit Vacuum Test Locations