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Post by cineman on Mar 25, 2007 16:33:11 GMT
Having found my steering head bearings on my 96' 900 were totally shot ( someone had tightened them to oblivion) I'm replacing the original Yam ball rollers with a set of taper rollers. What I need to know is if there is any difference in the setting procedure?
P.S.The outer races were a bit of a mare to get out. The lower one has at least cutaways to allow a long drift to bash em out. The upper is a horror, I had to carefully grind through the race with a hand held electric grinding tool - there is no way you can get a drift on it from below!!
cheers
Cliff
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Post by General Gman on Mar 25, 2007 19:48:02 GMT
errr.... no.
just whack em in, lube em up and tighten yer stem.
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Post by CD on Mar 28, 2007 15:25:35 GMT
Where's the best place to get taper rollers for head bearings?
Thats for D600 AND D900
Are there any standard bearings that will fit? Rather than mega price "made for bikes" stuff.
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Post by Deleted on Mar 28, 2007 15:35:57 GMT
Having found my steering head bearings on my 96' 900 were totally shot ( someone had tightened them to oblivion) I'm replacing the original Yam ball rollers with a set of taper rollers. What I need to know is if there is any difference in the setting procedure? P.S.The outer races were a bit of a mare to get out. The lower one has at least cutaways to allow a long drift to bash em out. The upper is a horror, I had to carefully grind through the race with a hand held electric grinding tool - there is no way you can get a drift on it from below!! cheers Cliff Taper roller bearings work differently from ball races. Usually you nip them up, back off the lock nut slightly so there is no play, and lock the main nut and lock nut. If you tighten taper rollers up hard they won't turn! |
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Post by CD on Mar 28, 2007 15:42:57 GMT
P.S.The outer races were a bit of a mare to get out. One option for pulling out bearing races is a slide hammer. But if the internal step is too deep the grinder option is the only way to do it. PS Hope you cleaned off all the grinding filings. I found out the hard way - when they rust they can stain paint and alloy. |
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Post by Deleted on Mar 28, 2007 16:04:12 GMT
P.S.The outer races were a bit of a mare to get out. One option for pulling out bearing races is a slide hammer. But if the internal step is too deep the grinder option is the only way to do it. PS Hope you cleaned off all the grinding filings. I found out the hard way - when they rust they can stain paint and alloy. When you've broken the slide hammer ;D (happened on the swing arm bearing job!), apply heat. If you can get a quick heat from a small arc welder it will break the rust/ dirt seal. My mate used to do it on his racing bikes, a quick run with the rod round the stuck race usually did the trick. |
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Post by General Gman on Mar 28, 2007 20:18:51 GMT
agree with top man Gordy - usually just a blob of weld on the outer race will drop it out. getting the inner one off the stem is another matter.When I did the bearings on the gixxer (17 year old originals they were..), had to use a die grinder and air chisel to get the bugger off.
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Post by Fiasco on Mar 28, 2007 21:27:50 GMT
Where's the best place to get taper rollers for head bearings? Thats for D600 AND D900 Are there any standard bearings that will fit? Rather than mega price "made for bikes" stuff. Got mine from shop.wemoto.com/pictures.dyn?u=5834959qqq25618HTH Dave ;D |
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Post by cineman on Mar 28, 2007 22:00:19 GMT
Thanks for your advice all, I managed to fit the new set of taper rollers today - hooray. Chirodave I was careful to remove all the filing and grind dust but I found I had ground into the race seat slightly  so a fair time was spend with wet and dry rubbing it down smooth! A slide hammer bearing remover?? is what I'll use next time!! To get the new races into the headstock Haynes blather on about making a puller device using threaded bar, washers and so on. After spending half a day constructing it I found it impossible to get it to pull the races in straight. In the end I put the races in the deep freeze for a few hours. Then they slipped into the headstock up to a point and a few wacks with a large faced rubber mallet really got them inserted! To get them fully down straight (or of course up in the case of the lower one) I carefully tapped them home with a pin punch. To get the taper roller on the steering stem I heated the roller in the oven and put the stem in the freezer! it made it easier but was still a bit of a bugger. Got the bearings from wemoto and adjusted them as per rollers. Cliff |
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Post by Deleted on Mar 29, 2007 20:18:34 GMT
Sounds like we've got another fitter on the site, well done my lad, proud o' ye. ;D
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so a fair time was spend with wet and dry rubbing it down smooth! A slide hammer bearing remover?? is what I'll use next time!!