Tool Required VB-FIX Required

Printpartsummary
Symptoms:
  • Lube failures
  • TCC apply & release concerns
  • TCC codes
Cause:

Excessive valve to bore clearance

Correction:

The Sonnax TCC lockup clutch regulator kit salvages the worn valve body by restoring the hydraulic integrity of the TCC lockup clutch regulator circuit.

Tool Required VB-FIX Required

722.6

Oversized TC Lockup Clutch Regulator Valve Kit

Part No.

68942-10K

Oversized TC Lockup Clutch Regulator Valve Kit
  • 68942-10k_combo

  • Oversized TC Lockup Clutch Regulator Valve Kit

Small_68942-10k_combo Small_68942-10k

722.6

Oversized TC Lockup Clutch Regulator Valve Kit

Part No. 68942-10K

  • Valve
  • Spring

Complaint:

  • Lube failures
  • TCC apply & release concerns
  • TCC codes

Cause:

Excessive valve to bore clearance


Correction:

The Sonnax TCC lockup clutch regulator kit salvages the worn valve body by restoring the hydraulic integrity of the TCC lockup clutch regulator circuit.

Excessive clearance at the outboard spool fed by the PWM solenoid allows modulating lube to exhaust. The resulting pressure loss causes reduced TC lockup clutch apply pressure, creating TCC-related complaints. Bore wear at the inboard spool can contribute to reduced line pressure. The Sonnax kit 68942-10K salvages the valve body with an oversized hard-anodized valve and a custom spring.

  • Oversized valve salvages valve bodies with worn TC lock-up clutch regulator valve bore.
  • Kit restores normal converter charge and cooler flow.
  • Valve design corrects harsh or no TCC apply, TCC slipping and burn-up.

Required Tools

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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 Mercedes 722.6

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