Pressure Regulator Valve CD4E

Pressure Regulator Valve CD4E Converter Regulator Valve Oversized Pressure Regulator Valve Lubrication Plugs (4) 1 extra Converter Regulator Spring Sonnax oversized pressure regulator and converter regulator valve kit 73840-RK featires a converter regulator valve and PR valve which work together to limit converter pressure, yet ensure flow continues during a failsafe condition. Updated valves flow a safe regulated pressure into both the line and converter circuit, yet maintain control under low pump volume and high line conditions Improved line-to-lube circuit allows full-time cooler flow Includes an EPC pressure limit relief valve Redesigned converter regulator valve has a lengthened spool to eliminate cooler pressure loss Tapered spool design of the converter regulator valve ensures flow at extreme pressure Hardcoat anodized aluminum valves combat premature wear and feature annular grooves to prevent side loading NOTE: This kit cannot address the loss of valve control at the converter bypass circuit. Wear at the bypass valve contributes to codes 628, 1740 and related converter slip codes. For information on that repair, see part number 73840-BK. Symptoms: Bushing failure Code 28, 1744, 1740 Cracked drum High line pressure Loss of lube oil No cooler flow during failsafe Planetary failure Cause: Worn casting bores at the pressure regulator and converter regulator valves, and insufficient cooler and converter flow. Correction: The oversized PR valve restores the balance circuit to correct high line pressure and guards against excess EPC/TV pressure. The PR valve and converter regulator valve have modifications to properly regulate converter and cooler flow.