Valvekit CD4E Master

Valvekit CD4E Master The CD4E transmission frequently exhibits such symptoms as lube failure, harsh shifts and line pressure instability as well as a variety of TCC Lockup issues. Sonnax master kit 73840-MK contains both the Regulator Kit 73840-RKand the Bypass Kit 73840-BK to address issues in both areas. See the individual kits for more detail. Both the Regulator and Bypass Kits require reaming for installation. See options below: Use 73840-BTL & 73840-RTL or Use 73840-BTL & F-73840-TL & VB-FIX 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.