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Old 02-03-2014, 06:52 PM
97 SL320 97 SL320 is offline
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Quote:
Originally Posted by Stretch View Post
I can't think of a single part in a 722.1 that's made of cast iron - what do you mean by graphite? Do you mean very fine swarf?
I can't say for sure on the .1 , but in many transmissions, cast iron is found in the front pump housing. Clutch drums are usually cast steel but modern transmissions use stamped steel. Cast steel is a sort of cast iron but more towards steel but not quite. One piece rotors / hubs are made from cast steel as well. As these materials wear they make a dust where steel makes flakes.

Graphite is a form of carbon.
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