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Sportster Motorcycle Engine Conversions Advice, questions, and tips for 1200, 1250, 1340, 1450 etc... for Sportster and Buell motorcycle engine conversions

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1275, big bore kit, custom build, custom oil tank, lithium ion battery

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  #1381  
Old 24th August 2021
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Quote:
Originally Posted by BestCoastXL View Post
Today I received the Oil seal for the Primary Cover.
<SNIP>
Then, using a 13 mm deep socket(for something to grab on to) I gently wiggled the socket on top of the seal until it seated up against the bushing.


A quick visual check shows that the seal is now squarely up against the bushing and ready for service.

I hate to mention this because your install may work out just fine, but:

http://sportsterpedia.com/doku.php/t...ifter_assembly

Quote:
NOTE: There is a TSB (M-1350) related to the 'NEW' Shifter Shaft Seal P/N 11000101 being installed with Special Tool HD-51337. The new seal has a 'garter spring' to help seal the shifter shaft from leaks. In this TSB, the following caution is made: If the tool is not used, install seal to a depth of 0.125-0.135 inches. DO NOT bottom the seal in the bore. Bottoming the seal will damage it and prevent it from sealing properly. (While this bulletin refers to Big Twins with 6-spd transmissions, this shifter shaft seal is used on other models, including the Sportsters.)

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  #1382  
Old 24th August 2021
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https://www.georges-garage.com/produ...l-installer-2/

I used something similar to the tool listed in this link when installing a new seal on my '86 Sportster. Keeps the seal from bottoming out in the transmission case and sets it to the correct depth.
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Too many updates to list. Let's say I've spent more in upgrades than I paid.... but how many times over is your guess.

My 1275 Hammer Performance upgrade http://xlforum.net/forums/showthread.php?t=2078737 IT WAS DELETED BECAUSE OF HAMMER'S SHODDY QUALITY CONTROL
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  #1383  
Old 24th August 2021
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Quote:
Originally Posted by HawkeyeTX View Post
https://www.georges-garage.com/produ...l-installer-2/

I used something similar to the tool listed in this link when installing a new seal on my '86 Sportster. Keeps the seal from bottoming out in the transmission case and sets it to the correct depth.
Hmm, now is a good a time as any to check my understanding.

How does putting the seal up against the bushing with no apparent difference in mating around the shaft cause a degrade in performance?

I would have thought that fluid pressure being what it is, if fluid got between the seal and the bushing in the cover then even though there’s a vent, fluid might work against the seal and cause a leak in that manner.

I might be way off...but does anyone have a picture of the tool and can describe the operation of it?

Edit: nvm.

http://sportsterpedia.com/lib/exe/fe...in:tsb1350.pdf

This too I can see gets in between the garter spring and the outer wall of the seal and sets it to the right depth.
If I measure with a caliper I can tell if I’m good to go.

The more important question now is if there’s the oil seal AND the rubber spacer that goes between the seal and the shifter lever/pawl then how does the seal being bottomed into the cover end up being affected if the spacer seals that seal off anyways?

Last edited by BestCoastXL; 24th August 2021 at 20:50..
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  #1384  
Old 24th August 2021
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See the link for a picture. It slides over the shifter shaft and bottoms out on the transmission cover. Nothing to it really.

https://www.georges-garage.com/produ...l-installer-2/
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  #1385  
Old 24th August 2021
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This would not be the first time that Harley has been wrong on a measurement.

Belt tension anyone?
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  #1386  
Old 24th August 2021
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Quote:
Originally Posted by HawkeyeTX View Post
See the link for a picture. It slides over the shifter shaft and bottoms out on the transmission cover. Nothing to it really.

https://www.georges-garage.com/produ...l-installer-2/
See my edit.
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  #1387  
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JM-767.pdf

here is Jim's version and their instructions with pics that might help.
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  #1388  
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Quote:
Originally Posted by HawkeyeTX View Post
Attachment 21053

here is Jim's version and their instructions with pics that might help.
Did you notice that the Jim’s manual doesn’t protect the seal from the splines?
No knocking their tools. Just noticing
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  #1389  
Old 24th August 2021
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Quote:
Originally Posted by BestCoastXL View Post
Did you notice that the Jim’s manual doesn’t protect the seal from the splines?
No knocking their tools. Just noticing
Yes, sir. Some instructions leave out "need to know" tips/tricks. The tool does allow for some protection of the inside of the seal to some degree. The seal sits on the recessed portion of the tool offering some protection from the splines, but it's still a good idea to cover with tape or some similar when installing.

Last edited by HawkeyeTX; 24th August 2021 at 21:07..
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  #1390  
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Quote:
Originally Posted by HawkeyeTX View Post
Yes, sir. Some instructions leave out "need to know" tips/tricks. The tool does allow for some protection of the inside of the seal to some degree. The seal sits on the recessed portion of the tool offering some protection from the splines, but it's still a good idea to cover with tape or some similar when installing.
This may mean a reversal of some steps for me, but it’s not game changing. I haven’t put fluid in it yet.

Still waiting to figure out if dissimilar fluids will react.
Example: mixing clutch plates soaked in DS with Bely-Ray Fluid
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