Fits: Mercedes Benz 722.6
Symptoms:
Wear at the TCC damper valve bore allows signal pressure to leak, resulting in harsh TCC apply.
The drop-in-place improved Sonnax TCC damper valve kit restores hydraulic sealing.
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.
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