TCC Damper Valve & Sleeve Kit

Fits: Mercedes Benz 722.6

Symptoms:

  • Harsh lockup

Cause:

Wear at the TCC damper valve bore allows signal pressure to leak, resulting in harsh TCC apply.

Correction:

The drop-in-place improved Sonnax TCC damper valve kit restores hydraulic sealing.

TCC Damper Valve & Sleeve Kit

Part No. 68942-23K

  • TCC Damper Valve 
  • TCC Damper Sleeve 
  • Spring 
  • Retainer Ring 
  • O-Rings (2)

Late model 722.6 valve bodies added a TCC damper valve at a previously vacant bore in the casting. This damper valve acts like an accumulator for the converter clutch. If there is leakage due to bore wear, signal oil can leak to exhaust, resulting in harsh TCC apply and lock-up.

  • The highly wear-resistant sleeve incorporates o-rings to seal against previous bore wear, without the need to ream the bore.
  • Annular grooves have been added to the Sonnax valve to better center the valve and prevent future wear.
  • No machining required.
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