Oversized Lockup Boost Valve Kit

Oversized Lockup Boost Valve KitPart No. 22771-19K '94-Later with boost oil delivery tube Tooling: F-22771-TL19 VB-FIX Chrysler 42-46-47-48RH/RE transmissions are equipped with a lockup boost valve that is prone to wear. When this valve wears, it causes a loss of converter and lubrication flow, which can result in TCC slip and an overheated converter. Lockup boost valve wear also causes excessive line pressure, and line rise during TCC apply or in 4th Gear can be lost. Sonnax oversized lockup valve boost kit, 22771-19K restores the lockup boost circuit pressures. The lockup boost valve kit will correct TCC apply, lubrication and overheat problems, as well as maintain proper line pressure. Hardcoat anodized aluminum valve combats premature wear Spring is calibrated to match OE pressure with the oversized valves Contents Lockup Boost Valve Plug Valve Spring Spring Retainer Symptoms: TCC slip under load No line rise during TCC apply in 4th Overheated converter Loss of lube oil High line pressure with no indication of boost No lockup TCC cycling Cause: Excess boost valve bore wear reduces oil pressure to the switch valve, resulting in a partial stroke position, restricting the converter and lube circuits. Correction: Sonnax oversized lockup boost valve kit restores the proper pressures to the switch valve and main regulator valve, ensuring proper flow through the converter and lube circuit and correcting line pressure.