Thursday, December 6, 2012

Found this in my mesh oil screen

From my 2010 Husky TE250.
I had some trouble getting the mesh oil screen out of the bike... found it was hung up on some metal particles. Used a magnet to pull them out, so they are magnetic.

Man, I hope this isn't a significant problem. But these are more than a shaving. Almost look like parts from a tiny ring or washer...
Any ideas?

Well, this ended up being a disaster.
Ok, so here is my wrap-up. 5 weeks and $1100 later and my bike is back and ready for action. We found all the bearings and some of the cage bits under the right hand side cover. The rest of the bits were under the left cover stuck to the magnetic parts there. And there were a few bits crushed and wedged up against the crank bearing. Here a pic of my collection:

Here are my tips for the next person with this problem:

- Count your bearings. If you can find them all and most of the cage bits without splitting the cases... well some people might consider that good enough. If all you do is ride in the back yard on your farm, I might not split the cases. But we did find some bits in there. And its hard to flush them out. I ride in the desert and on trips far from home and a failure out in the field would really spoil a vacation (at the least). So I split the cases and looked.
- The replacement bearings from Husky look identical to the original. They are marked: "NSK 6901 INDONESIA". You might do some research to see if you can get something that is *known* to be better. I'm hoping my originals just were from a bad batch.
- There is a chance that this gear and bearing could be replaced fairly easily during a valve adjustment. I might consider upgrading/replacing the bearings at that time.
- The bearings were $15 and the gear was $22. The parts are cheap.
- Don't ignore and metal pieces in your oil! If you find anything check that top timing gear's bearings. Maybe you can catch it before it falls apart.

No comments:

Post a Comment