Fluid leak between transmission sproket shaft

Lotsacabbage

New Member
I have a leak between the sproket shaft on the my transmission and the rubber seal on the shaft. The leak was found because I was looking to see if the "cap" behind the sproket was leaking. The cap is not leaking but there is fluid coming out between the rubber gasket and the shaft teeth.. Any help or direction would be greatly appreciated. Thanks to all the posts forgetting me as far as I have come so far.. Any illistarations would be helpful
 

phatchopper300

I just wanta ride
Are you refering with the sprocket on the right side under the clutch cover on which the final drive belt side. I just posted a thread myself on the exact same thing. I had to take off the belt to see if I had play up and down on the sprocket. And sure enough I do. So I am having the seal and bearings replaced. Was it leaking enough to spray back all over the bike and tire. Mine was a very slow leak but when I rode it splattered all over. I am at the point all is off except the tranny. Which I will have it out tonight.
 

Lotsacabbage

New Member
Yes sir. Same area. I dint have any play in the belt and the bearings seem ok also. Only issue I am having is tranny fluid leaking out of the shaft. It is coming out surfing riding threw the teeth of the shaft. I am trying to get a photo of it up do you mind if when I find you thread I jump in and get a little advise?
 

phatchopper300

I just wanta ride
Yes sir. Same area. I dint have any play in the belt and the bearings seem ok also. Only issue I am having is tranny fluid leaking out of the shaft. It is coming out surfing riding threw the teeth of the shaft. I am trying to get a photo of it up do you mind if when I find you thread I jump in and get a little advise?
Sure I like to help as much as poss. bigdogtech1 a member on here is fixing me up. Might want to contact him. He did say that the seal was easy to change. Did you take off the belt to the pully. Did you have any play up or down. I did so I am having to send him my tranny to change the bearings and seals. I am sure the forum will jump in and help also. Thats what is so great about this forum everyone is here to help!
 

bigdogtech01

Well-Known Member
I have a leak between the sproket shaft on the my transmission and the rubber seal on the shaft. The leak was found because I was looking to see if the "cap" behind the sproket was leaking. The cap is not leaking but there is fluid coming out between the rubber gasket and the shaft teeth.. Any help or direction would be greatly appreciated. Thanks to all the posts forgetting me as far as I have come so far.. Any illistarations would be helpful
Yes sir. Same area. I dint have any play in the belt and the bearings seem ok also. Only issue I am having is tranny fluid leaking out of the shaft. It is coming out surfing riding threw the teeth of the shaft. I am trying to get a photo of it up do you mind if when I find you thread I jump in and get a little advise?
All the seals are easy to change out. Is it behind the drive sprocket or the seal in the end of the main drive gear/main shaft? About the same diameter as a quarter.
If it's that small one leaking, take a small flat head screwdriver and carefully pry it out of the end of the drive gear. To install the new one, put a little oil onto the seal and carefully tap it into the end of the main drive gear. Make sure you go just beyond the end of the main shaft with the seal ( a little less than 1/8")
If it's the large one behind the Drive Sprocket, that ones very easy to remove and replace. There are 2 seals with that. The large one that is easy to see behind the Sprocket and then a quad seal that is under the Sprocket spacer. The spacer is located on the main drive gear and can be removed by either grabbing it with your fingers and pulling it off, or may have to carefully use a pair of channel locks to grab hold of it.
**Note** When you remove the seals and sprocket spacer from the transmission, grab hold of the main drive gear and try to move it up and down. If any play, most likely the bearings in the transmission are bad. How many miles are on the tranny
 

Lotsacabbage

New Member
Yes!!!! Awsome thanks!! Those were the seals leaking and also Easy as pie!!! Inexspensive also... Thanks for the help it is greatly apprecited.. I will be reassembled in about 30 min I will let you guys know 1oo% if that was it but at this time feel like it was.. Part # replaced are 11165 O ring quad seal and 12067b oil seal main shaft.. Both are HD numbers
 

bigdogtech01

Well-Known Member
Yes!!!! Awsome thanks!! Those were the seals leaking and also Easy as pie!!! Inexspensive also... Thanks for the help it is greatly apprecited.. I will be reassembled in about 30 min I will let you guys know 1oo% if that was it but at this time feel like it was.. Part # replaced are 11165 O ring quad seal and 12067b oil seal main shaft.. Both are HD numbers
Bearings are fine No play.. Only 9800 on tranny
Cool man, sounds good :2thumbs: Glad we were able to help you out.
:cheers:
 

turk1

Member
Am I safe to assume the 1 7/8" nut that holds the drive belt sprocket on is reverse thread? Right side drive / 6 speed trans.
 

PHATASS

Active Member
All the seals are easy to change out. Is it behind the drive sprocket or the seal in the end of the main drive gear/main shaft? About the same diameter as a quarter.
If it's that small one leaking, take a small flat head screwdriver and carefully pry it out of the end of the drive gear. To install the new one, put a little oil onto the seal and carefully tap it into the end of the main drive gear. Make sure you go just beyond the end of the main shaft with the seal ( a little less than 1/8")
Got a part number for that little seal?
 

Dragonman

Member
I noticed my bike doing the same thing today! did you buy your parts through harley?? have you had any more issues??
 
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