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  • Excess TCC slip
  • Low converter & lube flow
  • Low cooler flow
  • Overheating
  • Shudder
  • TCC apply & release concerns
  • TCC codes
  • TCC lining failure


Excess wear at the TCC control valve bore due to continuous oscillation allows critical fluid loss that causes multiple TCC and lube/cooler circuit concerns.


Salvage the pump and restore proper TCC apply/release and cooling circuit operation by installing Sonnax oversized TCC control valve kit.


Oversized TCC Control Valve Kit
Part No. 144510-07K

You need this if... View Instructions

Common concerns associated with Ford 6F35 units are high TCC slip, TCC lining degradation, TCC slip codes, and converter apply or release concerns. These issues are often caused by excess wear at the TCC control valve bore. In addition, converter/lube and cooler flow can be inhibited, resulting in an overheat situation. Reconditioning the bore and installing Sonnax oversized TCC control valve kit 144510-07K restores hydraulic integrity for renewed TCC, lubrication and cooler operation.

Proper TCC control relies on correct line pressure; if line pressure problems are discovered, Sonnax offers oversized pressure regulator valve kit 144510-03K.

  • Hardcoat anodized aluminum valve combats premature wear

Requires a 1/2" spacer plate between VB-FIX and pump body; see instructions for details.

  • Valve
  • Spring

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.

Ford 6F35 Valve Body Layout

Fd 6f35 vbl thumb

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
  • 144510 07k combo
  • 144510 07k

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.

  • 144510 07k test