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Author Topic: Final Drive leak.  (Read 2998 times)

Offline Mikey063

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Final Drive leak.
« on: August 02, 2016, 12:24:14 PM »
I think that my drive has a substantial leak.  Here are the details.  My bike is a 95 Connie and it has been running great for the last 8 years, but over the weekend I found a huge leak, well huge to me.  This occurred after a weekend in which I had a rider in which I was doing quite a lot of slow riding. 
While the last part is probably not the cause, I just wanted to show what occurred during the problem.  Here are the pictures of the mess.  Any and all help is most appreciated.   I am probably going to either replace all the o rings that may cause a leak ($56.56) OR just buy a used final drive hub for about $125 total.  Not sure of which is the best deal.










« Last Edit: August 02, 2016, 05:16:38 PM by Mikey063 »
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Offline Mikey063

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Re: Final Drive leak.
« Reply #1 on: August 02, 2016, 04:04:19 PM »
I have removed the final drive and did a partial tear down. 









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Offline MAN OF BLUES

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Re: Final Drive leak.
« Reply #2 on: August 02, 2016, 08:20:20 PM »
 :popcorn:
Well, you are pretty much commited now... hope you have done a rebuild on a drive unit before this one....

You should have asked HOW to remove that big outer seal, without disassembling the whole thing, before jumping in....
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46 YEARS OF KAW.....  47 years of DEVO..

Offline Mikey063

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Re: Final Drive leak.
« Reply #3 on: August 03, 2016, 10:35:28 AM »
I already looked up how to do it, I used the Clymer guide and from looking at various other threads.  So at this point, I am actually going to do both things.  I am going to purchase a used final drive, and also replace the o-rings on this one.  Also, I have NOT removed the outer seal yet.  I have only done a tear down up to the outer seal.  I have read about the difficulties in taking that one out, so that is why I have NOT removed it.  I do appreciate your input.
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Offline RFH87_Connie

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Re: Final Drive leak.
« Reply #4 on: August 05, 2016, 10:57:05 AM »
That big outer seal is piece of cake and pretty inexpensive too.  That is probably where your leak is.  Drill a small hole (1/8") and pull it out with a sheet metal screw.  Only drill thru the seal because it is aluminum below it.  Clean it all down and tap a new one in.  I used a nice flat smooth piece of 1/2" oak plywood with a hole in it.  I brushed some Permatex gasket sealant on the seal edge just before putting it in.
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Offline MAN OF BLUES

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Re: Final Drive leak.
« Reply #5 on: August 12, 2016, 02:08:41 PM »
Pretty much my response, but it was all taken apart... before I could say "hey, wait..... do it like..........."
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Offline Mikey063

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Re: Final Drive leak.
« Reply #6 on: August 12, 2016, 04:33:53 PM »
Update. 

I replaced the big seal, and then put back together.  Filled with gear oil up to the cap.  Drove for 10 miles and no sign of a leak.  I am very happy with the outcome.  Thanks.
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