You can use the big O-ring that comes with the oil filter (Mann HU821X) in the vacuum pump by removing the front cover with four screws, since that's where it mostly leaks from. That orange seal inside the vaccum pump isn't available from Mercedes, and the aftermarket seal often fails too, which is why they make you spend $800 to replace the whole vacuum pump. Also, while you're at it, replace the metal gasket (MER-6420160280) where the pump connects to the engine, as that can leak over time as well. People have successfully done this on 2012-2015 ML, GL, and R class vehicles with the OM642 engine, but I believe it should work for all OM642 engines, regardless of the model year. Just remember to clean everything really well with brake cleaner and a lint-free cloth before installing the gaskets to avoid any leaks later on. Do this at your own risk since the vacuum is used for the brakes!
What is the location of the Vacuum Pump on a 2000 ML30 (W164)? This video looks as though it is next to the oil cap. My ML320 doesn't seem to have it in the same place. Could it be in the rear of the engine under the radiator fluid reservoir? (I can't see well enough back there) THANKS
Da, am dat cu siliconul respectin sub garnitura si peste de atunci nu am mai avut probleme. Mare atentie sa se usuce bine ca altfel poate sa traga silicon in pompa. Mult succes!
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You can use the big O-ring that comes with the oil filter (Mann HU821X) in the vacuum pump by removing the front cover with four screws, since that's where it mostly leaks from. That orange seal inside the vaccum pump isn't available from Mercedes, and the aftermarket seal often fails too, which is why they make you spend $800 to replace the whole vacuum pump. Also, while you're at it, replace the metal gasket (MER-6420160280) where the pump connects to the engine, as that can leak over time as well.
People have successfully done this on 2012-2015 ML, GL, and R class vehicles with the OM642 engine, but I believe it should work for all OM642 engines, regardless of the model year.
Just remember to clean everything really well with brake cleaner and a lint-free cloth before installing the gaskets to avoid any leaks later on. Do this at your own risk since the vacuum is used for the brakes!
What is part number for the red rubber seal ?
Hey, Is this fix still working? No oil is leaking and pump works as it's should?
What exactly was the problem at what were the symptoms of the problem? Thanks
Mine is leaking oil from the front cover. Can I seal it without removing the pump?
What is the location of the Vacuum Pump on a 2000 ML30 (W164)? This video looks as though it is next to the oil cap. My ML320 doesn't seem to have it in the same place. Could it be in the rear of the engine under the radiator fluid reservoir? (I can't see well enough back there)
THANKS
Since when 2000 ML320 is W164 and a diesel?
ML 320 W164 !!!!
???????????
Salut Marius, ai folosit aceasi garnitură?
Da, am dat cu siliconul respectin sub garnitura si peste de atunci nu am mai avut probleme. Mare atentie sa se usuce bine ca altfel poate sa traga silicon in pompa. Mult succes!
Mulțumesc mult, am înțeles!