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

Tooling:

122740-TL10

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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

Contents

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

Valve Body Layout

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.