07 RK primary leak.....again
Thread Starter
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Road Master
Joined: Dec 2017
Posts: 976
Likes: 49
From: New York
07 RK primary leak.....again
So this has happened before, 2007 RK custom bagger, built 107ci stage 4. Had a primary oil drip awhile back, more severe the hotter it is outside. Took forever to locate but at the time I changed the starter clutch and the leak stopped. I even saw the drip going down from the starter hole at the time this was happening. Well it started again. Hard to believe the starter clutch has gone bad again? Unless the whole starter is trash. It was changed 4 years ago by a shop (I should've done it myself) and I swear that's when it started leaking. Unless I'm totally wrong and it's the inner primary seal. Anyone have this issue? Appreciate the imput.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,143
Likes: 11,212
From: San Diego, CA
So this has happened before, 2007 RK custom bagger, built 107ci stage 4. Had a primary oil drip awhile back, more severe the hotter it is outside. Took forever to locate but at the time I changed the starter clutch and the leak stopped. I even saw the drip going down from the starter hole at the time this was happening. Well it started again. Hard to believe the starter clutch has gone bad again? Unless the whole starter is trash. It was changed 4 years ago by a shop (I should've done it myself) and I swear that's when it started leaking. Unless I'm totally wrong and it's the inner primary seal. Anyone have this issue? Appreciate the imput.
Leaks are tricky in general, and specifically can be misleading where the primary is concerned... be sure to confirm the cause of the leak..
If it is the inner primary seal, it's not a hard fix, but time consuming....
Since 2007 has the original version of the automatic primary chain adjuster #39929-06, it may have ratcheted the primary chain too tight, which can lead to that seal leaking... in extreme cases it has caused issues with the inner primary bearing and the trans main shaft..
I would check your auto tensioner when you have the primary apart to fix the seal....
They upgraded that original tensioner around 2010ish to #39929-06B and it was much more reliable and much less problematic. They recently (last couple of years) upgraded it again to the #39939-06C version. Not sure if they actually made any changes this time, or just switched vendors...
In any case, I'd get the newest version and replace it if your's is the 2007 OEM version...
Good luck with your repair..
Tourer
Joined: Feb 2010
Posts: 420
Likes: 202
I just finished my 2003 rk inner primary seals, baker bearing etc.
All is holding perfect. No more leaks.
The one area I seemed to have the problem with was the MAIN SHAFT "lip seal" or my book calls it a
QUAD seal. I was not careful installing it the first time so it leaked. Second time I was VERY CAREFUL installing it and now it's holding.
It's probably best to have the EXACT tools for removing and especially installing that seal since it seems fragile. Be sure to add lots of oil to the lips and make sure the garder spring is intact.
It's EASY to think it's the MAINSHAFT OIL SEAL leaking when it's actually the quad seal.
All is holding perfect. No more leaks.
The one area I seemed to have the problem with was the MAIN SHAFT "lip seal" or my book calls it a
QUAD seal. I was not careful installing it the first time so it leaked. Second time I was VERY CAREFUL installing it and now it's holding.
It's probably best to have the EXACT tools for removing and especially installing that seal since it seems fragile. Be sure to add lots of oil to the lips and make sure the garder spring is intact.
It's EASY to think it's the MAINSHAFT OIL SEAL leaking when it's actually the quad seal.
Thread Starter
|
Road Master
Joined: Dec 2017
Posts: 976
Likes: 49
From: New York
Leaks are tricky in general, and specifically can be misleading where the primary is concerned... be sure to confirm the cause of the leak..
If it is the inner primary seal, it's not a hard fix, but time consuming....
Since 2007 has the original version of the automatic primary chain adjuster #39929-06, it may have ratcheted the primary chain too tight, which can lead to that seal leaking... in extreme cases it has caused issues with the inner primary bearing and the trans main shaft..
I would check your auto tensioner when you have the primary apart to fix the seal....
They upgraded that original tensioner around 2010ish to #39929-06B and it was much more reliable and much less problematic. They recently (last couple of years) upgraded it again to the #39939-06C version. Not sure if they actually made any changes this time, or just switched vendors...
In any case, I'd get the newest version and replace it if your's is the 2007 OEM version...
Good luck with your repair..
If it is the inner primary seal, it's not a hard fix, but time consuming....
Since 2007 has the original version of the automatic primary chain adjuster #39929-06, it may have ratcheted the primary chain too tight, which can lead to that seal leaking... in extreme cases it has caused issues with the inner primary bearing and the trans main shaft..
I would check your auto tensioner when you have the primary apart to fix the seal....
They upgraded that original tensioner around 2010ish to #39929-06B and it was much more reliable and much less problematic. They recently (last couple of years) upgraded it again to the #39939-06C version. Not sure if they actually made any changes this time, or just switched vendors...
In any case, I'd get the newest version and replace it if your's is the 2007 OEM version...
Good luck with your repair..
Thread Starter
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Road Master
Joined: Dec 2017
Posts: 976
Likes: 49
From: New York
Yeah I did. Definitely some old grime there still but the primary case is fresh wet. Weird problem
Road Warrior
Joined: Apr 2016
Posts: 1,399
Likes: 307
From: Salem IN
My shifter shaft seal was leaking. I got on Ronnies and ordered every seal in the primary, also did the baker bearing. Leak free for 5 years....knock on wood!
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Thread Starter
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Road Master
Joined: Dec 2017
Posts: 976
Likes: 49
From: New York
Well, changed the starter out yesterday. Quite an annoying job ever since changing to a 2-1 exhaust. Anyways, test rode and it would appear I have a dry garage floor! I went with a Terry Component starter and even spoke with one of their techs. This is what he had to say.
"This type of leaking occurs because most brands do not use the correct
clutch and bearings. The 1.5kw (2007-2016) starter needs to have a
clutch shaft with a seal and use a sealed bearing. We use a triple
sealed bearing."
Anyways, hope this will help others with the same issue.
"This type of leaking occurs because most brands do not use the correct
clutch and bearings. The 1.5kw (2007-2016) starter needs to have a
clutch shaft with a seal and use a sealed bearing. We use a triple
sealed bearing."
Anyways, hope this will help others with the same issue.
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