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Driveshaft Theory Question


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Just got my driveshaft back from a friend that helped out with centre support bearing replacement. While it was away, I was looking at the parts diagrams and noticed all the parts at the front end of the driveshaft. I could not remember them when I had taken the shaft out last Oct.( could have been there, could have been missing, I just never knew to look)

Parts 1to9. http://realoem.com/bmw/showparts.do?model=2583&mospid=47141&btnr=26_0136&hg=26&fg=10

thankfully they were there.

Now the questions:

1). What do these parts do?

2) Is there any maintenance required for these parts?

Thanks in advance


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It actually IS pretty important- the rubber ring (gooeybow) doesn't guarantee that the shaft stays centered.


The centering ring does, and it provides a defined pivot point for when things deflect.


They can wear out, and they can wear grooves on the trans output shaft, too.




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With your driveshaft out, pack lightly with good grease; I like Redline.  This bearing can get a little noisy if it gets dry.  You will know that if you think a nest of crickets made a home in your transmission at certain speeds (like 35 MPH).  I suspect the centering bearing restricts excessive movement in the guibo, helping to extend its life.



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