what is this part, & why cant i find it on my other wheels?

BiffTirkle

the diagram says that this is a collar, ive searched everywhere, and i havent been able to find the one i may have taken out.

i have 4 rear mag and 2 rear spoke wheels. one im rebuilding for my project, pictures at the link.

650rider.com/index.php...pic&t=3343

but i cannot find this collar anywhere. is it part of the original bearing assembly?

HELP!!

5twins · Full Member Joined: Aug 05, 2006 Posts: 1616

It's pressed into the bearing and must be removed from the old one to use it in a new one. If all your wheels still have bearings in them, there should be one in every wheel. It may look like part of the bearing at first glance, like an inner race. If you threw the old bearings out from that wheel you're rebuilding, then you may have inadvertently thrown that spacer out as well.

BiffTirkle

ah hah!!!!! i knew it !!!!! and yes i do still have the old bearings, ive tried to keep everything in a pile of what it came off of. so thank you thank you!!!!!!

5twins · Full Member Joined: Aug 05, 2006 Posts: 1616

Some bad news, I'm afraid. That collar has a lip on the backside and must be installed from the rear of the bearing. The lip needs to be on the inside to act along with the tube spacer and properly space the 2 bearings apart. If you tighten the axle up without it, the inner races will be squeezed towards each other too much and the bearings will bind. Your new bearing will have to come out.

weekendrider

5twins wrote:

That collar has a lip on the backside and must be installed from the rear of the bearing.

So if you didn't think/know of that, chances are you'd ruin it pressing it out from the wrong side?

5twins · Full Member Joined: Aug 05, 2006 Posts: 1616

Probably, and the bearing, too.

BiffTirkle

fortunatly, the collar wasnt ruined. and i had not installed the wheel yet either. so, nothing detrimental happened except my having to install that collar with the bearing installed. which i did carefully, and everything looks good.

one more question while we are on the subject.

since these new bearings are sealed, do i need to grease anything before i put the spacers, bearings and seals back together?

5twins · Full Member Joined: Aug 05, 2006 Posts: 1616

New sealed and lubed "for life" bearings really don't come with much grease in them at all. I like to add a bit more. Carefully pry the rubber seal up in one spot on the new bearing using a small, sharp pocket knife and using a needle point attachment on your grease gun, give it a shot, rotate a bit and give it another. You don't want to totally fill the bearing - that's too much and will just ooze out when it gets hot - just about half full.

BiffTirkle

will do, thanks!!

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