Loose compensator nut and damaged crankshaft : V-Twin Forum: Harley Davidson Forums
» Sponsors

» Insurance
Go Back   V-Twin Forum : Harley-Davidson Motorcycle Forums > Technical Discussion Forums > Twin-Cam 88" Engine Technical Discussion
New User? Register Forgot Password

LinkBack Thread Tools Display Modes
Old 07-09-2011, 03:24 PM   #1 (permalink)
FNG :)
Join Date: Jul 2011
Location: Kalgoorlie
Posts: 3
kramtsew wants to know Dino or Syn?
Loose compensator nut and damaged crankshaft

I put my bike into the shop to get the stator changed out because it was not charging.
Once the primary cover was off it only got worse as the stator was cactus for sure because the compensator nut had come loose and the rotor had stripped its splines and was floating on the crankshaft and had managed to loose four of the magnets and spread it all over the primary case and attached to anything metal.
The mechanic in the shop reckons that the crankshaft will need to be replaced because you can not easily slide the splined shaft for the compensator onto it. The shaft itself to me does not look that damaged and with a bit of file work could easily be made to work as it should.
I would much prefer to fix up the crankshaft as apposed to replacing it as that way the motor will not need to be taken out and dismembered to replace the crankshaft.
My question is, does the crankshaft need to be replaced when it has only a few burrs on the spline that can be easily removed or are there any other reasons why I could not reuse it once repaired.
I am hoping that some one on here may have had a similar problem and as to what they did.
kramtsew is offline   Reply With Quote
Sponsored Links
Old 07-09-2011, 05:33 PM   #2 (permalink)
Join Date: May 2009
Location: vienna ga
Posts: 581
jgc89 wants to know Dino or Syn?
file the crank and put it all back try it will probley be ok.
jgc89 is offline   Reply With Quote
Old 07-09-2011, 09:54 PM   #3 (permalink)
NJ Rider's Avatar
Join Date: Oct 2010
Location: Edison, NJ
Posts: 792
NJ Rider wants to know Dino or Syn?
Use the correct file and de-burr the crank. If it works, you'll save a ton of money, if it don't, you needed it anyway.
NJ Rider is offline   Reply With Quote
Old 07-10-2011, 10:09 AM   #4 (permalink)
Nitram_b4's Avatar
Join Date: Jan 2010
Location: SC
Posts: 4,149
Nitram_b4 is reading this now saying WTF is this?
If it was mine I would file it and put it back together, what do you got to loose?
Nitram_b4 is offline   Reply With Quote
Old 07-10-2011, 10:21 AM   #5 (permalink)
Axe Man
BVBOB's Avatar
Join Date: Feb 2006
Location: Central WI
Posts: 5,536
BVBOB wants to know Dino or Syn?
I would be more concerned that the area the stator runs on is not worn and that the new one engages tightly on the splines, check the runout, if the splined extension goes on I doubt you have a problem
2007 Ultra
Donatell heads
553 bd cams
Power duals with re-core cvo
Welded crank

1982 FXRS
new paint
new tires
new brakes
new clutch
Soon to be back on the road

Being honest may not make you a lot of friends but it will always make you the right ones.
BVBOB is offline   Reply With Quote
Old 07-10-2011, 10:58 AM   #6 (permalink)
FNG :)
Join Date: Jul 2011
Location: Kalgoorlie
Posts: 3
kramtsew wants to know Dino or Syn?
Thanks for the comments and suggestions. I think I will clean up the shaft and see how the new rotor fits and as to how much runout there is.
kramtsew is offline   Reply With Quote
Old 09-12-2011, 03:52 PM   #7 (permalink)
FNG :)
Join Date: May 2007
Location: NY
Posts: 16
NICK56 wants to know Dino or Syn?
Aug 2011 on the way to sturgis my crankshaft end bolt "drilled" itself right thru the primary case. Part of the bolt stayed in the crank. Hd went for a new motor. 2012 road glide 2000 miles on it. Not good! Tow rentacar hotel.. Their bolt cost me $700! If you hear any lower end noises.. Get it to the dealer... Pronto!
NICK56 is offline   Reply With Quote
Old 09-15-2011, 03:59 PM   #8 (permalink)
FNG :)
Join Date: Sep 2011
Location: NJ
Posts: 4
20bagger03 wants to know Dino or Syn?
Same thing happened to me last wekeend. I was about 120 miles from home when I started it and heard the noise. About 80 miles into it, I heard a loud screech then the volt gauge dropped to around 12. It made it home, I removed the primary cover and the nut fell on the floor. The stator rotor teeth are all gone and the teeth on the crank are boogered up as well as the threads on the crank. I measured the runout on the crank just to see if anything happened and I got .0045 or total runout. It's a little much but I think as long as I can fix the threads I should be good.. Has anyone had to repair the threads on their crank?
20bagger03 is offline   Reply With Quote
Sponsored Links

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 06:57 PM.

Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
(C)2001-2012 V-twinForum.com All Rights Reserved (C)2001- V-twinForum.com All Rights Reserved
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum Ducati Scrambler Forum