6DCT450

The main constructive idea for shifting gears in DCT WD is adopted from n-speed transmissions and the shifting is performed by means of hydraulics and solenoids controlled by the control unit. Therefore many age-related problems are the same as n-speed transmissions: metal friction suspended material from hot ATF clogs valves of the valve body and solenoids, gets on the rubbing surfaces and promotes the wear of aluminum by vibrations and sticking of valves, especially when the friction clutches are worn out, that leads to a chain reaction of metal wear and further contamination of oil.

Therefore the 6DCT450 has more capacious outside filter in comparison with other CVTs. There are several filters-cartridges modifications, which are different for DCT450 and DCT470. The filter is included in the overhaul repair kit, but Gertrag engineers recommend to replace this filter more often, especially if the transmission has been used for a long time.