woodruff key part no. N0127082 ???

[sailaz]

On drawing it is part no. 4 (OEM part no. N0127082)
what for it is used ? how it is used ? when ???

[simon20vq]

Simply locates & holds cam wheel to cam shaft when bolts holds it all together. The rounded side sits in the cam flat edge in wheel .

[UrS4boy]

Simply locates & holds cam wheel to cam shaft when bolts holds it all together. The rounded side sits in the cam flat edge in wheel .

Probably correct for some cam sprockets but not true for the AAN/ABY/ADUs (and maybe the 3B??) because the cam sprocket has a built-in "key" that fits into a groove in the end of the camshaft.

[UrS4boy]

Some better photos:

[sailaz]

ookeyyyy , so this is the one .. ... strange that ETKA shows this thingy as separate part for ADU !




Tommi's Billet AD001 cam sprocket has a built-in "key" as well (if I remember correctly I didn't have to fit it separately ...)

[GazzaG60]

be careful not to overtighten or pressurise the pulley wheel. the key is like cheese on aby wheels. I have broken a couple in my time.

[sailaz]

... what about hexagon bolt M10X1,25X30 (no.6 on diagram, part no.: N90256202) and washer (no.7 on same diagram, part no.: 027109143) - seems that these are special ones and
only OEM can be used



https://www.ecstuning.com/b-genuine-...ach/n90256202/
&
https://www.ecstuning.com/b-genuine-...ach/027109143/

[Thuppu]

On drawing it is part no. 4 (OEM part no. N0127082)
what for it is used ? how it is used ? when ???

Could this be for the chain sprocket? At least it looks like that one.