Symptoms:

  • Low cooler flow
  • Overheated fluid
  • Low converter pressure
  • TCC slip
  • TCC slip codes

Cause:

Bore wear in the cooler, main converter pressure relief and/or converter relief valve can cause excess leakage and/or sticking valves in their respective circuits resulting in various overheating and converter apply and release issues as well as TCC slip codes.

Correction:

Restore hydraulic control by reconditioning the bores and installing Sonnax oversized cooler, main converter pressure and converter relief valve kit.

AS66RC, AS69RC

Oversized Cooler, Main Converter & Converter Relief Valve Kit
Part No. 122740-10K


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

Aisin Seiki AS66RC and AS69RC units often suffer overheating and converter slip/code issues caused by excess wear in the cooler, main converter pressure and converter relief bores. This wear allows fluid loss, which can lead to poor cooling, low cooler feed, low converter charge, TCC slip and TCC slip codes. When working properly, these valves dampen/absorb pressure spikes to ensure proper apply and release of the TCC.

Reconditioning the bores and installing Sonnax oversized cooler, main converter pressure and converter relief valve kit 122740-10K re-establishes correct clearances for proper valve function.

  • Steel valves combat premature wear
  • Annular grooves, where appropriate, help center the valve in the bore to reduce side-load wear
  • Springs calibrated to match OE function
  • Cooler Relief Valve
  • Cooler Relief Valve Spring Blue
  • Main Converter Pressure Relief Valve
  • Main Converter Pressure Relief Spring Brown, Gas
  • Main Converter Pressure Relief Spring Red, Diesel
  • Converter Relief Valve
  • AS66RC, AS69RC Oversized Cooler, Main Converter & Converter Relief Valve Kit 122740-10K
  • AS66RC, AS69RC Oversized Cooler, Main Converter & Converter Relief Valve Kit 122740-10K details

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.

Vacuum test with a tapered plastic tip and ensure that the damper piston is against the separator plate.

AS66RC, AS69RC Oversized Cooler, Main Converter & Converter Relief Valve Kit Vacuum Test Locations