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Post by stusco on Sept 2, 2014 15:24:11 GMT 1
any one know the correct part number for the bearing at the back of the clutch ,the one i have is 93305-20502, it comes up as a circlip on fowlers site,or any place better to buy one.
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Post by Trubrit on Sept 2, 2014 15:54:38 GMT 1
Norbo Sells Em...
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Post by muttsnuts on Sept 2, 2014 15:55:00 GMT 1
that's the right part number, its the main shaft clutch side bearing, its an OEM bearing as far as I have been able to find out so all of the bearing places I tried couldn't get one like it, Yambits do one which is the same make as the Yamaha one, but the bearing is expensive - circa £40, noit sure where Yambits are getting them from, but they are the right one and I've had no problems with the ones I've had from them - one of the few things I still buy from them TBH
HTH
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Post by stusco on Sept 2, 2014 16:02:57 GMT 1
Thanks just to make sure I check all the bearings before I built the gear box all seemed great now there seems to be movement on the clutch shaft doesn't seem right to me but it's been 20 years since I last done one so any advice will be welcome
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Post by oldelsieboy on Sept 2, 2014 16:11:01 GMT 1
seems to be movement on the clutch shaft doesn't seem right to me Up & down, side to side or in & out? OEB |
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Post by stusco on Sept 2, 2014 16:32:01 GMT 1
All of the above
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Post by midlifecrisisrd on Sept 2, 2014 16:48:51 GMT 1
This is the bane of my life.
New Bearing (TSS Upgrade), New bush, new spacer, new thrust washers, billet basket, wiseco rubbers.
Still got play and a clatter off the primary shaft/Clutch basket
Steve
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Post by muttsnuts on Sept 2, 2014 17:05:13 GMT 1
movement in and out is ok - to a point anyway, as that is taken out when the clutch assembly etc is all tightened up.
side to side is not good as isn't up and down
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Post by stusco on Sept 2, 2014 17:08:55 GMT 1
Strange though the bearing is nice n smooth so can't see where the movement is , so should I strip it back down and change it?
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Post by muttsnuts on Sept 2, 2014 17:11:10 GMT 1
its a dual race bearing, it does get some hammer and is the bearing that normally fails more than most, if there is any up and down movement with the clutch basket etc removed, e.g. you are holding the shaft and that is moving up and down then the bearing is on its way out. If its not much you might get away with it, but if its say a few millimeters or more then I would be changing it as its a full engine strip down to change at a later date if it fails
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Post by steven on Sept 2, 2014 17:16:58 GMT 1
Hi,
Are you checking for play with the clutch basket etc all built up onto the shaft?, or are you getting the play by holding the shaft and waggeling it without the clutch etc fitted?
You will feel slight play if the clutch basket etc is fitted to the shaft, but if you are getting play on the shaft itself, before the clutch basket etc is all fitted, then that is a bit more serious.
steven.
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Post by stusco on Sept 2, 2014 17:44:47 GMT 1
I felt play before I fitted the clutch but built it anyway to see what it's like fitted but I'm not happy so it's a strip down and new bearing got new bush coming as well now just have to get a bearing
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Post by midlifecrisisrd on Sept 2, 2014 17:49:28 GMT 1
I felt play before I fitted the clutch but built it anyway to see what it's like fitted but I'm not happy so it's a strip down and new bearing got new bush coming as well now just have to get a bearing I never fitted the bush as the new one had a bigger id than the old one. I have in and out play with everything installed. You can hear it clattering through the clutch side and the opposite side of the shaft. Only at idle. Steve |
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Post by muttsnuts on Sept 2, 2014 18:00:56 GMT 1
Steve, sounds like your gear cluster needs shimming up, there are very thin shims between some of the gears, this is to take/remove some of the side play, basically if memory serves me right you shouldn't have much more than a few thou of movement on the gears, the shims tend to get worn through and "disappear", most gearboxes that I have stripped and rebuilt have always been minus the shims or left with just wafer thin ones
HTH
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Post by midlifecrisisrd on Sept 2, 2014 18:10:24 GMT 1
Steve, sounds like your gear cluster needs shimming up, there are very thin shims between some of the gears, this is to take/remove some of the side play, basically if memory serves me right you shouldn't have much more than a few thou of movement on the gears, the shims tend to get worn through and "disappear", most gearboxes that I have stripped and rebuilt have always been minus the shims or left with just wafer thin ones HTH Was thinking it must be some thing like that. I used a very low miles 250 gearbox which seemed perfect so I never even took them apart. Was at a loss till I had the case off for some thing else and noticed if you pulled in and out on the basket it made the noise. Only done 800 miles since building the motor in 2 years so will get round to stripping it again eventually lol You live and learn. Cheers for the advice Steve |
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Post by Tone on Sept 2, 2014 18:44:44 GMT 1
Did you replace the bearing at the other end of the shaft? I had this on my LC2 when I built it up with a New Genuine clutch shaft bearing and noticed slight side to side play after building the clutch up. Decided to strip the cases again and replaced the bearing at the other end of the shaft, built it up again and the play had gone. Shown on the parts list as "Bearing, cylindrical" item #13 on the gearbox section.
Tone
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Post by midlifecrisisrd on Sept 2, 2014 19:00:28 GMT 1
Did you replace the bearing at the other end of the shaft? I had this on my LC2 when I built it up with a New Genuine clutch shaft bearing and noticed slight side to side play after building the clutch up. Decided to strip the cases again and replaced the bearing at the other end of the shaft, built it up again and the play had gone. Shown on the parts list as "Bearing, cylindrical" item #13 on the gearbox section. Tone Yes, also a toss upgraded one Steve |
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Post by stusco on Sept 2, 2014 19:18:34 GMT 1
I already replaced that one after dropping the first one on my manky garage floor
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Post by 4L0luvvr on Sept 2, 2014 20:55:30 GMT 1
When checking or ordering parts from Fowlers website take the hyphens out of the part number. They have this in stock.
I am no great fan of Fowlers but I am really surprised how much they keep in stock for a 30+ year old bike.
If you order any special order parts though they don't keep you informed of the progress of the order and they can take ages to arrive.
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Post by stusco on Sept 2, 2014 21:37:04 GMT 1
Thanks for the advice but I've ordered it from somewhere else
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Post by muttsnuts on Sept 3, 2014 8:59:31 GMT 1
yes you can, but trying to machine a bearing race is a bloody nightmare, they are as hard as hell, so not worth the hassle TBH
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Post by stusco on Sept 5, 2014 20:39:53 GMT 1
I felt play before I fitted the clutch but built it anyway to see what it's like fitted but I'm not happy so it's a strip down and new bearing got new bush coming as well now just have to get a bearing I never fitted the bush as the new one had a bigger id than the old one. I have in and out play with everything installed. You can hear it clattering through the clutch side and the opposite side of the shaft. Only at idle. Steve My new bush also has a bigger ID than the one fitted fiver doon the drain |
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