Chrisa112 Posted October 22, 2012 Report Share Posted October 22, 2012 Alright guys, Hoping for someone to shed some light on this problem I currently have. I've got an STM slipper clutch on my supermoto and I need to change the plates. Issue I have is...How the fook do I get the central nut off without the clutch spinning? I cant use a clutch holding tool because whilst all the plates are still in the clutch it has nothing to get hold off. You can only use it when the plates are out to hold the basket still, correct? Any ideas would be good as I don't want to jam something in there to stop it spinning and f*ck the clutch up. P.s. I dont have or have access to an air wrench Link to comment Share on other sites More sharing options...
RonniB Posted October 22, 2012 Report Share Posted October 22, 2012 Jam the primary gear with an old/used bearing shell.. Link to comment Share on other sites More sharing options...
bazdude Posted October 23, 2012 Report Share Posted October 23, 2012 You could try to shove clean rags into the two main recesses but I doubt it would work. I have used this method well for clutch's that have pretty much the entire circumferences well exposed enough to jam rags around it. Rattle gun and the nuts off in a jiffy. Link to comment Share on other sites More sharing options...
MonkeyJim Posted October 23, 2012 Report Share Posted October 23, 2012 put it in gear and get a mate to stand on the rear brake, whilst you undo the centre nut Link to comment Share on other sites More sharing options...
Gix Posted October 24, 2012 Report Share Posted October 24, 2012 put it in gear and get a mate to stand on the rear brake, whilst you undo the centre nut ^ this, in fact, you can hold the rear brake yourself and do it. Alternatively take the red anodised cap off (in the pic) and there is an allen head on the end of the crank Are you familiar with STM's ? Once you have cracked off the nut (it shouldn't be too tight) make sure you lay the bike on it's left side other you run the risk of the ball bearings in the hub coming adrift from their ramps and dropping into the case. Also, there is a serated washer behind that nut that must go in the same way it came out. Yours is an early version STM and pretty easy to work on Link to comment Share on other sites More sharing options...
Chrisa112 Posted October 24, 2012 Author Report Share Posted October 24, 2012 Cheers Gix! Got a mate who can lend me a compressor and an impact wrench, so should be a lot easier than planned. Will let you know how I get on! Link to comment Share on other sites More sharing options...
Gix Posted October 24, 2012 Report Share Posted October 24, 2012 shouldn't need one as it shouldn't be that tight...definately don't do it back up with an impact wrench Link to comment Share on other sites More sharing options...
Chrisa112 Posted October 26, 2012 Author Report Share Posted October 26, 2012 shouldn't need one as it shouldn't be that tight...definately don't do it back up with an impact wrench Right, had a bash at undoing the clutch nut. Stopped the crank turning using that allen head bolt (didn't know it was there, cheers!) and a wrench. Tried undoing the nut, anti-clockwise as usual, but it did not budge...I thought i was just undoing the nut (felt like undoing a really tight nut, but it never got any looser). Not sure where to go from here. When I tried to undo the clutch nut, the pressure plate on the front (with the writing on it) would move out like I was engaging the clutch. Any ideas? If you didn't realise, I've never delt with a clutch before haha. Link to comment Share on other sites More sharing options...
Chrisball Posted October 26, 2012 Report Share Posted October 26, 2012 I used to have a stm evo clutch on my 748R which looked similar, i had a special STM tool to hold it while you un did the nut which located on the 6 nothcs you can see on your pressure plate! unfortunately i dont have the tool any more. It looked like this if its any help. http://www.google.co.uk/imgres?q=stm+evo+clutch+holding+tool&um=1&hl=en&sa=N&rlz=1W1ADFA_enGB476&biw=1024&bih=585&tbm=isch&tbnid=T88AqwC_-I22VM:&imgrefurl=http://www.superbikesupply.com/mm5/merchant.mvc%3FScreen%3DPROD%26Store_Code%3DSBS%26Product_Code%3Dclutch-stm-slipacc-07%26Category_Code%3Dclutch-stm-slipacc&docid=ScgFJUmyo5anyM&imgurl=http://www.superbikesupply.com/mm5/graphics/00000001/67-4771EvoCltchHoldr.jpg&w=1039&h=665&ei=KueKUNPtIcbG0QWXp4HYDQ&zoom=1&iact=hc&vpx=81&vpy=147&dur=3500&hovh=180&hovw=281&tx=125&ty=74&sig=101879566620744563892&page=1&tbnh=107&tbnw=167&start=0&ndsp=15&ved=1t:429,r:0,s:0,i:71 Link to comment Share on other sites More sharing options...
Chrisa112 Posted October 31, 2012 Author Report Share Posted October 31, 2012 Would of needed that tool ^ if I didn't borrow an air wrench off my mate Span the nut off easy as pie. Replaced the clutch plates as per the Hinson instructions sheet. The old plates didn't look very worn to be honest, so I hope that fitting the new ones soaked in the correct oil will make a difference. Everything is back together now, ready to try out tomorrow. It's all shiny! Link to comment Share on other sites More sharing options...
Chrisa112 Posted November 1, 2012 Author Report Share Posted November 1, 2012 FIXED! Cheers for all the help. Link to comment Share on other sites More sharing options...
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