clutchbell bearings

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benny

benny

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i have blown up 2 sets of clutchbell bearing with the last gallon of fuel ive used what is causeing these bearing to blow apart???
 
could it have somthing to do with not meshing my clutchbell and spurgear right?
 
I like to push the gears all the way together than slightly tighten one of the rear screws and leave the other 3 loose. Now start to push the clutch away from the spur a little bit and spin the spur. If you didnt back it off to much than it will either turn half the way around and stop or turn but make a clicking sound. Keep backing the clutch away from the spur till the sound goes away and the gears move smoothly when the spur is spun. Tighten one of the front screws now and spin the spur again. If its all still spinning smoothly than test for slop in the mesh. hold the clutch bell and wiggle the spur back and forth. There should be very little, if any play in the gears. If it feels like you have little to no slop in the gears, than tighten the rest of the screws and your done.
 
I'm not sure how you are meshing you sg/cb, but here is a link on spur gear/clutch bells....http://www.hpieurope.com/walk.php?lang=en&id=13. It show some symptoms and what is the correct mesh. Personally, I put the plastic bag that a spur gear comes in between the CB and SG, get them tight together, then remove the bag. Hope this helps you out and good luck bud!
 
Last edited by a moderator:
i know this is gonna sound like a complete moron but i think ive been putting the slipper clutch pad on wrong the past couple years ive had my savage, do u stick the slipperclutch pad to the spur gear or the metal piece on the slipper clutch???
 
Stick it to the spur.

An additional note is to verify that the CB doesn't have any "lateral" play on the crank shaft.

In other words, be sure that the CB doesn't have any play back and forth along the crank shaft.

Also, be sure that the outer bearing races fit tightly in the CB. A drop or two of loc-tite or super glue between the outer race and the CB will keep the outer bearing race from slipping in the CB, and causing heat and wear.
 
I used an inner race of one of the bearings that failed, and filed it down to use as a spacer between the new bearing, and the retainer screw. Make sure it is not too tight, but keeps the bearings "snug".
 
I'm having a brain fart and the retainer screw is on the end of the crackshaft in front of the CB right?
 
OFNA also sells a clutch shimming kit that comes with a lot of great spacers, screws and shims in it.
 
MotoPsycho said:
Stick it to the spur.

An additional note is to verify that the CB doesn't have any "lateral" play on the crank shaft.

In other words, be sure that the CB doesn't have any play back and forth along the crank shaft.

Also, be sure that the outer bearing races fit tightly in the CB. A drop or two of loc-tite or super glue between the outer race and the CB will keep the outer bearing race from slipping in the CB, and causing heat and wear.
Click to expand...

It is supposed to have some moto... :resp:
 
Personally, I have had the best luck with "very little" slop. This comes after changing several bearings out - I am up to 2½ gallons on the same bearings this time - I went through 5 "non-shimmed" bearings in the first 1½ gallons.

As you can see in the pic, I have changed the screw to a cap head bolt.

Brgspcr.jpg
 
i just got a brand new CB and i have new bearing on the way so ill see if it still wiggles
 
And I did mean VERY little. Just enough to feel and barely see. I also use the OFNA kit to shim my CB. LOL side to side huh :duh: its cooked!
 
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