Transmission lube into Primary
Thread Starter
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Road Warrior
Joined: Jul 2012
Posts: 1,307
Likes: 195
From: Ohio
Transmission lube into Primary
OK I think I know the answer to this question , but I need to ask just to make sure.
If I understand correctly tranny lube can't leak from the tranny into the primary unless the tranny output shaft is hollow and then the tranny lube may run into the primary if the tranny is overfilled.
Is this correct?
If I understand correctly tranny lube can't leak from the tranny into the primary unless the tranny output shaft is hollow and then the tranny lube may run into the primary if the tranny is overfilled.
Is this correct?
Last edited by P51Driver; May 8, 2013 at 07:11 AM.
OK I think I know the answer to this question , but I need to ask just to make sure.
If I understand correctly tranny lube can't leak from the tranny into the primary unless the tranny output shaft is hollow and then the tranny lube may run into the primary if the tranny is overfilled.
Is this correct?
If I understand correctly tranny lube can't leak from the tranny into the primary unless the tranny output shaft is hollow and then the tranny lube may run into the primary if the tranny is overfilled.
Is this correct?
Thread Starter
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Road Warrior
Joined: Jul 2012
Posts: 1,307
Likes: 195
From: Ohio
Well the output shaft is hollow because that is what the clutch actuation rod runs through and I guess if you way over filled the tranny fluid could run through it. If you have a tranny seal leaking you could have tranny fluid in the primary. I would doubt that a year old bike would have a bad tranny seal, but like the previous poster said, his has been leaking motor oil into the primary since new, so anything is possible. Isn't it still under warranty?
If the tranny seal was leaking wouldn't the tranny lube be leaking in between the tranny and the inner primary housing behind the transmission belt sprocket?
In other words, the tranny and the inner primary housing don't share a common seal so if i am correct tranny lube couldn't leak into the primary via the shaft seals.
Last edited by P51Driver; May 8, 2013 at 11:31 AM.
But the tranny seal doesn't come in contact with the inner primary housing.
If the tranny seal was leaking wouldn't the tranny lube be leaking in between the tranny and the inner primary housing behind the transmission belt sprocket?
In other words, the tranny and the inner primary housing don't share a common seal so if i am correct tranny lube couldn't leak into the primary via the shaft seals.
If the tranny seal was leaking wouldn't the tranny lube be leaking in between the tranny and the inner primary housing behind the transmission belt sprocket?
In other words, the tranny and the inner primary housing don't share a common seal so if i am correct tranny lube couldn't leak into the primary via the shaft seals.
Elite HDF Member
Joined: Jul 2007
Posts: 4,749
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From: sand mountain Alabama
My 07 ultra did it.
started leaking at the primary, at the seam underneath.
It was a warranty issue. After replacing the seal it never leaked again.
How do you over fill the transmission?
It holds one quart when drained.
started leaking at the primary, at the seam underneath.
It was a warranty issue. After replacing the seal it never leaked again.
How do you over fill the transmission?
It holds one quart when drained.
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I just had my tranny apart there is no seal that I seen that keeps the oil from running down the clutch actuator rod. Oil does fill/flow through the bearings into the side of the RH cover
You would have to really overfill the tranny. It only takes a quart. Drain it fill it with one quart and add some red food coloring dye
You would have to really overfill the tranny. It only takes a quart. Drain it fill it with one quart and add some red food coloring dye
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Ultimate HDF Member
Joined: Feb 2010
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From: Jayhawk Country
Maybe 1 quart works for your bike, not mine. My bike won't hardly register on the dip stick with 1 quart. I think I actually ended up with 22 oz's to bring it to the middle of the dip stick.
Last edited by KCFLHRC; May 8, 2013 at 02:15 PM.
Thread Starter
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Road Warrior
Joined: Jul 2012
Posts: 1,307
Likes: 195
From: Ohio
Well beings 32 oz = 1 quart then it would seem you are underfilling your trans with 22 oz's