scars all over primary and secondary faces?????

[KidWalleye]

Just got back from cooke and was looking sled over and discovered scars all over my primary and secondary clutch faces. where the belt rides. belt looks and feels brand new. I never noticed and sliping or anything at all.none of the scars have any burs or any thing hanging out of them. primary seems to have more of the scars then the secondary. dont really know what could have caused this?? there is more scaring on the bottom of the primary, where your belt would ride at low speed or RPMs but they come all the way out on the face all the way to the edge some are even on the very edge going over the top....

this is on a stock 2007 M1000

any ideas?????

Gary

 

[jim]

Debris...my money is on those hood vent clips...they fall out easy.

 

[promod631]

rescars

Check the small screws on back of secondary clutch ,they are the srews that hold the helix. friend of mine lost some from there and it marked his clutch,,, just a thought..let us know waht you find out ...

 

[BarryS]

Seen something that happened to a Rev in S.D. a year or so ago. A small bolt from a mounting bracket above or near the secondary fell out and got trapped by the rotating belt and chewed the heck out of the primary and secondary, top to bottom on both.

 

[ElectroTech]

Dont worry about it at all just take a scotchbrite pad to the clutches and clean them up good. It was probably a rivet mandrel from a bracket that vibrated its way out of the soft aluminum rivet, its a good idea to knock the mandrels out of the rivets near the clutches little bastards can make your clutches look like they have road rash, but it shouldnt really hurt it

 

[mysledblows]

Also might want to check the PTO bearing in the motor. Had a buddy that had one go. Made both clutches really ugly. We still find pieces of the bearing under the motor once in a while.

 

[thefullmonte]

I had the same thing. After blowing a belt on the trail and unable to properly clean out the clutch bay. Well, I finally found some very very small aluminum filings (from the damage caused by the blown belt) that became embedded in the new belt and scratched the heck out of the sheave faces. Look very closely at your belt.

 

[wheelz]

belly pan seal?

check to make sure your belly pan is sealed up to your bulkhead really well, and if you spent much time trailering on open trailer, road debris, sand and such can get in your vents, lays in the bottom of your tub. This wreaks havoc on your clutches once the sled starts being ridden. also hitting trees while riding can some times get trash in your cowling and it will end up in your clutches.

a good place to start looking is in the belly pan below your clutches, and the general area of your engine for anything loose in there.