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Originally Posted by samiam4
cars with ABS require pressure bleeding per the MB shop manual.
Problem with the old pumping the pedal method is you are pushing the [iston cups beyond their normal travel point. That area is where the crude will lie and this ussually shortens the M/C life. Much better to either pressure bleed or on older cars you can use something like a vacuula.
Michael
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Usually, you are safe if you only pump the pedal 1/4 - 1/2 of the way down. Also, you can still bleed them manually regardless of ABS. It's the traction control systems that you have to worry about.