Pressure Regulator Valve A500,A518

Pressure Regulator Valve A500,A518 OE valve must match '78-later design. See instructions for details. Under extreme pressure or temperature conditions, the converter/lube circuit in listed Chrysler RWD units can be restricted by the PR valve. The practice of drilling a hole between passages is problematic. This outdated technique contributes to slow engagements or — if the hole is improperly drilled — excessive converter pressure and low line pressure.The best way to improve oil flow is to replace the OE valve with Sonnax lube regulatored pressure regulator valve 22771A-02K, which ensures oil flow under extreme operating conditions and prevents drainback when the truck is off. Improves converter feed/lube oil flow at critical low RPM and high load conditions Redesigned valve prevents fluid drainback & slow engagements Helps charge the converter in Park 22771A-02K and Sonnax 22771-09 can be used independently, but are of greatest benefit when used as a pair PR valve/manual valve pair Symptoms: Converter bushing failure Delayed engagement Lube failures Pressure regulator buzz Cause: Poor converter line feed pressure causes delayed engagement, pump bushing and lube failure. Correction: Install this steel valve for improved stability. Lube regulation improves converter feed at low RPM and high throttle conditions. WARNING: To prevent converter slippage, restricted cooler flow and possible hydraulic noise, remove the cooler line drainback valve.