Quick question: Stem Races 75' CB550

Drey6

Over 1,000 Posts
Currently installing the new steering stem races. Have them flush but of course the new races aren't the same size as the old ball bearing races. So I'm thinking I need to have the races hydraulically pressed all the way down to their respective seat and then use the kits provided washers to bring the bearing up to it tightly when I reinstall the trees, correct? Thanks as always gents.

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It's flush and I can't get it down any further. I guess I thought this inner lip was the seat,
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I would assume it's actually seated then.
 
put the old bearing cup against it and see if it goes, if it is seated the hammer will just bounce off with a real soild feel
 
That bearing surface doesnt look seated at all.
Also doent look like the inside of the frame area was cleaned properly before installing the new bearing cup.

You cant use the OEM bearing because that is different. I held balls, not a cone bearing.
Find a socket or something that is slightly smaller then the OD of the bearings. And drive it home. You can see the lip in the frame that the bearing should sit against....thats why it should have been cleaned better.

The washers are to go under the cone roller bearing part hat gets driven onto the stem, not on the frame.
 
And that's why you always clean the inside of the head tube, and look at the seat before you start. That way you'd know if that was the seat or if you're in it now :)
I'd wager you need to go a bit further
 
XB was saying use the old bearing cup to drive in the new one (like the idea of using a socket). Obviously, it's not the same bearing type, that's why I'm doing this in the first place to upgrade to the cone bearing!

I have a family friend that owns a car shop so I'll have him press them in the rest of the way. Also, I did clean and grease the seat, just didn't clean the whole head tube :)
I should have taken a picture before I started, I guess.

The second image shows what I thought was the seat but that's another quarter of an inch, that's what my real question was. I also understand that the washers are used to to raise the bearings upon reinstalation of the triple, that's what made me post this asking if it does indeed need to be driven in the rest of the way to that lip, then the washer would bring the new bearing up to the same heighth.

Up to this point I froze the bearing cups for a day, they slid in relatively easy. I used a flat piece of 3/8 steel and a hammer to get it flush. Before going further I made this post before I began to drive it further, to insure I wouldn't have to do it twice. Hope this makes sense that I understand the function of the bearing. Just simply asked if I had to go further instead assuming I did and damaging the new cup.

Thanks gents, this was just a quick question but somehow it gets to how I cleaned it wrong, don't understand the function. I just wanted to check before I proceeded.
 
My new friend, Chuck (Chuck78 on here) just mentioned grabbing this kit to finish the job. http://m.harborfreight.com/10-piece-bearing-race-and-seal-driver-set-95853.html?utm_referrer=direct%2Fnot%20provided

So after I purchased that I removed the races, cleaned the head tube, regressed and pounded them home. Worked out great and for $35 bucks I'm bound to use it again (especially with the wheel bearings).
 
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