The torque converter powers the transmission pump and sends transmission fluid back to the transmission via cooling lines The transmission oil pump also has a seal to prevent any fluid from leaking.
Automatic transmission oil pump seal importanceThe transmission oil pump seal is a vital component that lets necessary fluid movement so that the transmission stays cool and shifts gear. The transmission pump includes a seal that prevents fluid from leaking and going past the torque converter shaft. The transmission oil pump seal must remain in good working order to keep the fluid circulating to the cooling lines and back to the transmission.
Common problems with a faulty automatic transmission oil pump sealA faulty transmission oil pump seal can lead to leaving, low transmission fluid, and shifting problems.