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Milwaukee 8 Engine Problems

Old Sep 12, 2023 | 12:53 AM
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sjoko
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Originally Posted by Rounders
Venting, not oil movement. Not a lot, but some. through the jackshaft. Enough to help, I don't know. But what has changed? Why do you need the vent now? Bigger hotter engines. It doesn't do to everybody. Other theory I heard is it happens more in touring bikes cause they tend to get rode more, and longer distances. Nothing else, that is why you probably tend to seem more issues in touring bikes.

I have not had a need to work on my hydraullic clutched bike. Hopefully I don't get experience for awhile.
It really has nothing to do with heat and riding longer- , and greater distances....
The cause is that the gasket only closes the outhern ridge of the transmission , and not the inner ridges of the area where the actuator is located.
So every time when the clutch lever will be released , it sucks a little bit transmission oil through the very thin openings between the ribbons which are not covered by that too simple made gasket ( when there is no vent installed to abolish that "balloon pump" side effect )
The most easy way to press that collected oil away again , is not through the tiny openings called above, ...but through the hollow main shaft .
The reason that one M8 suffers more of that side effect than the other M8 , is probably due to little differences of the thickness of the gaskets or wee differences of the moulded inner reinforcement edges of the inner covers. ( I don't know ,...I never could have measured such differences of course )
( My question also was : Are there any differences between the inner cover of a TC - , and the inner cover of an M8 equipped with hydraulic clutches ? )
Luckily it's all resolved now ,....and translated from Dutch language we say "It's just mustard after the meal now"


Watch this ( and see what happens 5 minutes later from the start )
You will see an amount of collected ( sucked in ) transmission oil coming out , as soon the actuator was just removed.

 

Last edited by sjoko; Sep 12, 2023 at 01:55 AM.
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