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Looking for some advice and to see if anyone has had a similar issue. I have a 1977 GS750 that now, for the 4th time, has had the stator rotor come unpressed from the crank stub and backed the bolt out. There is no key way or splines for the rotor to grip the crank stub, only a tapered press fit. I have used lock tight and the bolt comes factory with a lock washer but neither one prevents the bolt from backing out. I'm assuming that the rotor is free spinning on the crank stub on heavy acceleration or deceleration/engine braking causing the bolt to back out. I'm temped to have a mobile welder come out and put a couple tack welds on to hold the two together. Any thoughts or experience on my situation?
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get some valve lapping compound and work the rotor back and forth to get a better mating surface1978 GS 1000 (since new)
1979 GS 1000 (The Fridge, superbike replica project)
1978 GS 1000 (parts)
1981 GS 850 (anyone want a project?)
1981 GPZ 550 (backroad screamer)
1970 450 Mk IIID (THUMP!)
2007 DRz 400S
1999 ATK 490ES
1994 DR 350SES -
As the other post says some fine grinding paste and lapping the two surfaces to get a better fit, there is a very good product that Loctite makes called 660 quick metal that is made to solve the problem you have, clean the lapped surfaces thourerly coat the surfaces with the product tighten as normal do not start the bike and leave for 24 hours. It is not cheap but is an excellent product.The big guy up there rides a Suzuki (this I know)
1981 gs850gx
1999 RF900
past bikes. RF900
TL1000s
Hayabusa
gsx 750f x2
197cc Francis Barnett
various British nailsComment
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Make sure you are also using red Loctite on the bolt (number 9 in this picture) that secures everything in place.
Last edited by cowboyup3371; 06-25-2016, 06:59 AM.Cowboy Up or Quit. - Run Free Lou and Rest in Peace
1981 GS550T - My First
1981 GS550L - My Eldest Daughter's - Now Sold
2007 GSF1250SA Bandit - My touring bike
Sit tall in the saddle Hold your head up high
Keep your eyes fixed where the trail meets the sky and live like you ain't afraid to die
and don't be scared, just enjoy your ride - Chris Ledoux, "The Ride"Comment
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Just curious. What symptoms did you experience when rotor came loose?http://img633.imageshack.us/img633/811/douMvs.jpg
1980 GS1000GT (Daily rider with a 1983 1100G engine)
1998 Honda ST1100 (Daily long distance rider)
1982 GS850GLZ (Daily rider when the weather is crap)
Darn, with so many daily riders it's hard to decide which one to jump on next.;)
JTGS850GL aka Julius
GS Resource Greetings
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Is 660 comparable to a metal epoxy like JB weld?Comment
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I have never used jb weld but as the name suggests it may stick the parts together but can you get them apart? 660 is made so that it can be disassembled.Originally posted by Tyler View PostThe big guy up there rides a Suzuki (this I know)
1981 gs850gx
1999 RF900
past bikes. RF900
TL1000s
Hayabusa
gsx 750f x2
197cc Francis Barnett
various British nailsComment
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Might be worth buying a new bolt, maybe the threads are stretched causing the repeated loosening,GS\'s since 1982: 55OMZ, 550ES, 750ET, (2) 1100ET\'s, 1100S, 1150ES. Current ride is an 83 Katana. Wifes bike is an 84 GS 1150ESComment
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