Toxic Performance

            The Torque Converter should be replaced under any of the following conditions The vehicle has TCC shudder and/or no TCC apply. First complete all electrical and hydraulic Diagnosis and check for proper engine operation. The converter clutch may be damaged. Also the converter bushing and/or internal 0-ring may be damaged . . Evidence of damage to the oil pump assembly pump shaft turbine shaft drive sprocket support and bearing or metal chips/debris in the converter. Metal chips/debris are found in the converter or when flushing the cooler and the cooler lines. External leaks in the hub weld area lug weld or closure weld . Converter pilot is broken damaged or fits poorly into the crankshaft. The converter hub is scored or damaged. The transmission oil is contaminated with engine coolant engine oil or water. If excessive end play is found after measuring the converter for proper end play. If metal...

                   BD Diesel Duramax Allison Transmission Component and System Description   Engine/Transmission Connection   The converter housing of 1000 Series transmissions mates directly to the engine block. DB Diesel Flex plate drive is used for engine to transmission torque transfer. DB Diesel Duramax Torque Converter    Several torque converter  are available to match the transmissions to a wide variety of diesel and engines. The torque converter is a single-stage, poly phase, and 3-element unit, consisting of a pump, stator, and turbine. At lower output speeds, the torque converter multiplies torque and provides a fluid coupling to the engine. At higher speeds, the torque converter clutch. is automatically engaged to provide direct drive from the engine to the transmission. Hydraulic fluid for converter charging pressure comes from the sump and is supplied by the input pump. The TC...