oil leak from stator plug
Cruiser
Joined: Jul 2006
Posts: 224
Likes: 21
From:
You can just change the grommet that seals the stator. It is a separate piece. But to answer your question yes you need only replace the stator and of course the primary gasket assuming the one you remove cant be reused
Elite HDF Member
Joined: Nov 2010
Posts: 3,846
Likes: 173
From: Simi Valley, CA
The easiest way to repair it is with some RTV (silicone) sealer. Do the RTV correctly and you'll never have a problem again. Both of my bikes have had this done. Here's a link to a thread that describes the process and I've attached a couple of pics... https://www.hdforums.com/forum/touri...-oil-leak.html
And these pictures sure make my bike look filthy. I swear it doesn't look that filthy to the naked eye.
And these pictures sure make my bike look filthy. I swear it doesn't look that filthy to the naked eye.
Thread Starter
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Tourer
Joined: Jun 2009
Posts: 400
Likes: 2
From: Montreal (Quebec)
The easiest way to repair it is with some RTV (silicone) sealer. Do the RTV correctly and you'll never have a problem again. Both of my bikes have had this done. Here's a link to a thread that describes the process and I've attached a couple of pics... https://www.hdforums.com/forum/touri...-oil-leak.html
And these pictures sure make my bike look filthy. I swear it doesn't look that filthy to the naked eye.
And these pictures sure make my bike look filthy. I swear it doesn't look that filthy to the naked eye.
Its not easy to put the rtv between the plug and the motor....
Elite HDF Member
Joined: Nov 2010
Posts: 3,846
Likes: 173
From: Simi Valley, CA
Yeah. The first two pics are the Softail, the third is the Bagger and it gets wiped off more than ever washed so the engine gets some crud. The pictures make it look like its time for a hose job to the engine... but I swear it doesn't look anything like that bad when you look at it. The flash on the camera really highlights the dirt.
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Seasoned HDF Member
Joined: Jun 2010
Posts: 9,332
Likes: 3,873
From: Upstate New York
This has been a problem since I can remember with the Evo. Fact is, the rubber plug and the cavity are both oval in shape. Over time, the rubber plug shrinks into a "dogbone" shape and it no longer fits tightly in the oval hole. This setup worked in the Shovelhead, where you ran essentially a "dry" primary with just a drip feed for the chain, and a scavenging port in the bottom of the primary case to return the oil to the tank. The Evo runs a wet primary with a quart or more of oil circulating, and the plug just can't cope with it
As I always say, "show me an Evo, and I'll show you a leaking stator plug"
Over the years, I've tried just about everything to seal the leak. What finally worked for me (so far) was "flowable" RTV sealant. They sell this stuff in auto parts stores to seal windshield leaks. You need to clean the plug and case area thoroughly with brake cleaner or electrical contact cleaner, being sure to get it down into the gap between the case and the plug. Then you apply a bead of the flowable RTV around the plug. In a few minutes it will disappear down inside the gap between the plug and case. Apply some more to be sure you fill the gap, then let it cure overnight.
I really didn't expect it to work, but my bike's been dry for months.
As I always say, "show me an Evo, and I'll show you a leaking stator plug"
Over the years, I've tried just about everything to seal the leak. What finally worked for me (so far) was "flowable" RTV sealant. They sell this stuff in auto parts stores to seal windshield leaks. You need to clean the plug and case area thoroughly with brake cleaner or electrical contact cleaner, being sure to get it down into the gap between the case and the plug. Then you apply a bead of the flowable RTV around the plug. In a few minutes it will disappear down inside the gap between the plug and case. Apply some more to be sure you fill the gap, then let it cure overnight.
I really didn't expect it to work, but my bike's been dry for months.
Last edited by Uncle G.; Mar 25, 2013 at 07:00 PM.
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Seasoned HDF Member
Joined: Jun 2010
Posts: 9,332
Likes: 3,873
From: Upstate New York
This applies to Evos, as I know absolutely nothing about twin cams.
Last edited by Uncle G.; Mar 25, 2013 at 07:19 PM.
Thread Starter
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Tourer
Joined: Jun 2009
Posts: 400
Likes: 2
From: Montreal (Quebec)
This has been a problem since I can remember with the Evo. Fact is, the rubber plug and the cavity are both oval in shape. Over time, the rubber plug shrinks into a "dogbone" shape and it no longer fits tightly in the oval hole. This setup worked in the Shovelhead, where you ran essentially a "dry" primary with just a drip feed for the chain, and a scavenging port in the bottom of the primary case to return the oil to the tank. The Evo runs a wet primary with a quart or more of oil circulating, and the plug just can't cope with it
As I always say, "show me an Evo, and I'll show you a leaking stator plug"
Over the years, I've tried just about everything to seal the leak. What finally worked for me (so far) was "flowable" RTV sealant. They sell this stuff in auto parts stores to seal windshield leaks. You need to clean the plug and case area thoroughly with brake cleaner or electrical contact cleaner, being sure to get it down into the gap between the case and the plug. Then you apply a bead of the flowable RTV around the plug. In a few minutes it will disappear down inside the gap between the plug and case. Apply some more to be sure you fill the gap, then let it cure overnight.
I really didn't expect it to work, but my bike's been dry for months.
As I always say, "show me an Evo, and I'll show you a leaking stator plug"
Over the years, I've tried just about everything to seal the leak. What finally worked for me (so far) was "flowable" RTV sealant. They sell this stuff in auto parts stores to seal windshield leaks. You need to clean the plug and case area thoroughly with brake cleaner or electrical contact cleaner, being sure to get it down into the gap between the case and the plug. Then you apply a bead of the flowable RTV around the plug. In a few minutes it will disappear down inside the gap between the plug and case. Apply some more to be sure you fill the gap, then let it cure overnight.
I really didn't expect it to work, but my bike's been dry for months.