Symptoms:

  • Overheating
  • Repeated converter failure
  • TCC slip
  • TCC slip codes

Cause:

Bore wear can cause excess leakage or sticking valves in the converter and lube circuits resulting in various overheating and drivability issues.

Correction:

Restore hydraulic integrity by reconditioning the bore and installing Sonnax oversized converter and lube relief check valve kits.

U660E, U660F, U760E, U760F

Oversized Converter and Lube Relief Check Valve Kit
Part No. 47740-60K


You need this if... View Instructions Find a Distributor

Common problems associated with Toyota/Lexus U660E, U660F, U760E and U760F transmissions are overheating, TCC slip, TCC codes and converter failure. These issues can be caused by excess wear at the converter and lube relief check valves. This can cause the valve to leak fluid and significant wear can cause the valve to become stuck in the bore.

Reconditioning the bore and installing Sonnax oversized converter and lube relief check valve kit 47740-60K re-establishes correct clearance for proper converter and lube functions.

  • Valves (2)
  • Converter Spring White
  • Lube Spring Yellow
  • U660E, U660F, U760E, U760F Oversized Converter and Lube Relief Check Valve Kit 47740-60K
  • U660E, U660F, U760E, U760F Oversized Converter and Lube Relief Check Valve Kit 47740-60K

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.

U660E, U660F, U760E, U760F Oversized Converter and Lube Relief Check Valve Kit Vacuum Test Locations