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I spent an hour trying to figure out this but still confused. My tranny is 722.971 with MCT
In WIS, it still says Drain ATF from torque converter for transmission 722.9 with drain screw on torque converter.
Problem is, we all know MCT does not have torque converter, but this bullet point is still in my WIS. It's very confusing. Mercedes should let us know if our tranny has this plug or not. Did I miss anything in WIS?
I won't be able to physically find it until I go for the oil change. That's why I'm spending time trying to find answers online.
Multiple C63s owners with 722.9 MCT said they did no find "torque converter" drain plug when they change ATF.
Originally Posted by chassis
The MB "startup clutch" is directly analogous to the turbine-type hydraulic torque converter+lockup clutch. The MCT unit is filled with out. WIS will indicate whether it can be drained or not.
@konigstiger may have posted WIS for this in the W212 section although I haven't seen it.
Similar but not identical wet clutch systems from BorgWarner and ZF are shown for comparison.
Yes I posted the WIS on that a few posts back. I don't know the answer but WIS implies the MCT has a drain plug. Actually, EPC might answer the question, if there is a part callout for a plug with sealing washer. But I was going to say just pull the inspection cover and rotate the engine 360. If no plug, then there's no plug. That is definitive.
Yes I posted the WIS on that a few posts back. I don't know the answer but WIS implies the MCT has a drain plug. Actually, EPC might answer the question, if there is a part callout for a plug with sealing washer. But I was going to say just pull the inspection cover and rotate the engine 360. If no plug, then there's no plug. That is definitive.
07-25-2023, 12:10 PM
