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Taper roller head bearings

Posted: Sat Jul 01, 2017 3:09 pm
by PaulD738
I seem to remember fitting taper roller bearings to the steering head isn't a straight swap?
Does this also apply to the T500 and what is involved?

Re: Taper roller head bearings

Posted: Sat Jul 01, 2017 3:54 pm
by BAZ
Dont know but why change them........

Re: Taper roller head bearings

Posted: Sat Jul 01, 2017 5:06 pm
by PaulD738
The standard ones where s*****d Baz, I've never seen a bearing set so worn!
I've fitted taper rollers to modern bikes before and the difference was really noticeable so I thought while the bike was in bits I may as well fit them.

Re: Taper roller head bearings

Posted: Sat Jul 01, 2017 5:19 pm
by Alan H

Re: Taper roller head bearings

Posted: Sat Jul 01, 2017 5:30 pm
by PaulD738
Thanks Al, nice to spend an hour in your man cave today. Just a shame your Hippo is poorly :cry:

Re: Taper roller head bearings

Posted: Sat Jul 01, 2017 6:02 pm
by mizzytheman
PaulD738 wrote:I seem to remember fitting taper roller bearings to the steering head isn't a straight swap?
Does this also apply to the T500 and what is involved?

Or similar post here http://www.kettleclinic.co.uk/kcforum/v ... 3890#p3890

Re: Taper roller head bearings

Posted: Sun Jul 02, 2017 9:58 pm
by PaulD738
Mmm, problems today. The bearing kit I bought off eBay is the wrong size?
The supplied bearings are 48x25x15 and 48x27x14. The o/d is correct at 48mm but my steering stem is actually 25.4mm or one imperial inch? There is a removable sleeve against the bottom yolk which is 28mm dia.
At first I thought the stem had been turned down for some reason but the finish leads me to believe me it's standard and my parts book shows the sleeve listed as part of the inner race (part # 51611-16500)
It's a bit of a long shot but has anyone got a T500 steering stem they could measure up for me?

Re: Taper roller head bearings

Posted: Sun Jul 02, 2017 10:03 pm
by Alan H
That sounds about right. Click on the links in the replies above and there's some diagrams of what to do. I used a length of emery tape to 'file' the stem of both 550s.

Re: Taper roller head bearings

Posted: Sun Jul 02, 2017 10:25 pm
by canaletto5
PaulD738 wrote:Mmm, problems today. The bearing kit I bought off eBay is the wrong size?
The supplied bearings are 48x25x15 and 48x27x14. The o/d is correct at 48mm but my steering stem is actually 25.4mm or one imperial inch? There is a removable sleeve against the bottom yolk which is 28mm dia.
At first I thought the stem had been turned down for some reason but the finish leads me to believe me it's standard and my parts book shows the sleeve listed as part of the inner race (part # 51611-16500)
It's a bit of a long shot but has anyone got a T500 steering stem they could measure up for me?
That's what happens when you carry out unnatural acts :lol: Fit the proper ball bearings. Any one who says they aren't as good as taper don't know how to pre-load 'em. The last set lasted for40 year ! That'll make you 120 before they need doing again :lol: :lol: :lol: :tw

Re: Taper roller head bearings

Posted: Sun Jul 02, 2017 11:06 pm
by itsnotateapot
It's a bit of a long shot but has anyone got a T500 steering stem they could measure up for me?[/quote]
Yes