Symptoms:
- TCC slip
- TCC slip codes
- TCC apply & release concerns
Cause:
Excess wear of the OE lockup boost sleeve/valve assembly allows main line pressure to cross-leak further down into the bore. This prevents proper hydraulic control of the lockup control valve.Correction:
Restore proper hydraulic control and renew line pressure performance by replacing worn OE parts with a Sonnax drop-in lockup boost valve kit.AS66RC, AS69RC
Lockup Boost Valve Kit
Part No. 122740-30K
You need this if...
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The lockup boost valve/sleeve assembly in Aisin Seiki AS66RC and AS69RC transmissions is prone to wear. As the sleeve oscillates from vibrational forces and the valve strokes over time, the wear that occurs prevents proper hydraulic control of the lockup control valve, resulting in a multitude of TCC complaints. Some common symptoms of these side-effects can be TCC slip, TCC slip codes and TCC apply and release concerns. Installing Sonnax drop-in lockup boost valve kit 122740-30K will restore normal TCC operations by re-establishing the proper hydraulic integrity of the Lockup control circuit.
- Sleeve is manufactured from highly wear-resistant aluminum
- Hardcoat anodized aluminum valve combats premature wear
- Drop-in Zip ValveTM parts install quickly and easily
- Valve
- Sleeve
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.
Aisin Seiki AS66RC, AS69RC Valve Body Layout
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.
