Guest Anonymous Posted May 28, 2003 Share Posted May 28, 2003 My manual says to replace the o-ring between the crankshaft and timing gear. What are they talking about? Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted May 28, 2003 Share Posted May 28, 2003 timing gear and... oh, wait a minnit- is that a fix for an oil leak down the inside of the pulley? Certain motors leaked oil down the keyway, and out the front bolt hole. That could be what they're thinking. But I've never seen one on the 5 or so m10's I've taken apart... t Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted May 29, 2003 Share Posted May 29, 2003 dumb little circlippy type thing that is replaceable. Quote Link to comment Share on other sites More sharing options...
Guest Anonymous Posted May 29, 2003 Share Posted May 29, 2003 You did not say which manual advises to replace the o-ring, but I can say for certain that the OE BMW service manual says the exact opposite. In section 11 21 501 "Replacement of crankshaft" they reference removing Woodruf key & the o-ring (shown in a picture), followed by an installation note which states "the o-ring can be omitted". I've never installed one & don't see a need for it. I've never had a pulley hub leak past the nut. Quote Link to comment Share on other sites More sharing options...
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