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Old 05-19-2013, 11:42 PM   #9
Joined: Jul 2005
Location: Traveler
Oddometer: 5,218
I don't know a way to be absolutely sure they are good except to completely disasemble the rollers. If they feel tight they are still good.

I just replace mine every 15-20k miles and redo the water pump because I know they will fail.

Gunnerbuck has a very good thread on rebuilding them in the index.

I couldn't find his video but here's some of his wisdom.

We didn't see a picture of the metal on the magnet...were there broken pieces or just fuzz.

If it's chunks, I'd keep looking.

What year is your machine?

'02 KTM 640 Adventure-lowered
"On the road there are no special cases."
Cormack McCarthy-The Crossing

The faster it goes the faster it breaks.
And high performance=high maintenance.
Bill Shockley
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