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Help with derby cover leak

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  #21  
Old 04-08-2011, 03:12 PM
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Originally Posted by noridinsavage
SO is it safe to say that a1999- 5 hole cover might fit a 93 EVO?
Here's what I did, I bought a used outer primary (black wrinkle) on e-bay for $35 bucks, check to make sure the gasket for the primary cover is the same, mine was, and then I popped it on, rolled the motor to check clearence, and its been working for 2 trouble free years now... Will it fit your '93? Don't know, but if its what you want to try find a buggered up one and test fit it and see. I am not sure what all clutch changes were made, if any, between '93 and '96 but I do know it was fun and drives guys nuts at bike events... "hey that can't be a '96, it's got a 5-hole primary" LOL
 
  #22  
Old 04-08-2011, 05:05 PM
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I also had this problem. Derby cover was warped... when I took it apart was obvious o-ring with rvc everywhere....when I reinstalled I used some heat and hammer to bend the derby cover back best I could and put the o-ring in and paper gasket back in because I wasnt convinced on by straightening skills. No leaks....I ordered a new derby cover but who wants to wait for that to come in..
 
  #23  
Old 04-08-2011, 05:48 PM
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Originally Posted by Doug S
Once you have it installed and not leaking, next time you have it off take a sharpie and mark the inside as to which way is straight up. I've found that getting them on with the same orientation eliminates much of the leak issues. I think they all warp a little and conform to the primary cover...works for me...


D
That makes real good sense!
 
  #24  
Old 04-09-2011, 05:39 AM
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good info, will try to find a 5 hole outer to fit, I'm over fighting the slow seepage on my 3 hole.
 
  #25  
Old 07-16-2017, 04:39 AM
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I bought a 1997 HD Classic FLHTC last year. I thought I was going to be smart and add all Live to Ride covers on everything. Well, since I added the three hole derby cover I haven't been able to stop it from leaking. I already bought a second gasket and put gasket sealer on it and it's leaking again. I guess I'll try the double gasket but if I could find an O ring I would put that on first and try it again. Anyone got any links to a new O ring to fit?
 
  #26  
Old 07-16-2017, 04:50 AM
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I found O rings for the primary cover at J&P Cycles in Iowa. Just ordered some.
 
  #27  
Old 07-16-2017, 05:13 AM
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Originally Posted by Mike T
It's a gasket the Harley shop sells now that's the same size as the inside cover. You can only use it one time. I guess the reason the TC's went to the 5 hole cover was all the trouble the evo guys have with that derby cover leaking.
This EVO went to a 5 Hole Cover as well .. Although this was the only EVO Big Twin in 2000 No question your statement is true ..
 
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  #28  
Old 07-16-2017, 05:22 AM
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Originally Posted by Johnny423
.... Don't think I over tightened them but is it possible that I still didn't tighten them enough? Should I have removed the o-ring all together?
Any suggestions are appreciated!

Thanks

John
Your cover is probably warped and never fit correctly from the beginning.
Either buy a new cover or clean off the surfaces real good, run a bead of Yammabond in the groove then reset the "O" ring and screw the cover back on. Let is sit for a few hours and it'll be tight as turtle *****.
 

Last edited by Hey Man; 07-16-2017 at 05:25 AM.
  #29  
Old 07-16-2017, 08:59 AM
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Originally Posted by JayStronghawk
This EVO went to a 5 Hole Cover as well .. Although this was the only EVO Big Twin in 2000 No question your statement is true ..
Originally Posted by Hey Man
Your cover is probably warped and never fit correctly from the beginning.
Either buy a new cover or clean off the surfaces real good, run a bead of Yammabond in the groove then reset the "O" ring and screw the cover back on. Let is sit for a few hours and it'll be tight as turtle *****.
Ya'll do realize you are replying to posts made 6 years ago right???
 
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