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5th Gear Mainshaft Seal - How To Remove?

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Old 03-25-2012, 01:18 PM
M&P340
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Default 5th Gear Mainshaft Seal - How To Remove?

I'm trying to remove/replace the 5th gear seal in the tranny mainshaft in the primary with the shaft in place, in a '04 FXDP with TC88.

Can anyone describe how you've managed to remove that seal with the shaft in place without damaging the inner/outer seal surfaces?

Sure appreciate any suggestions that have been successful in past.
 
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Old 03-25-2012, 03:10 PM
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Last edited by Dan89FLSTC; 03-25-2012 at 03:27 PM.
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Old 03-25-2012, 03:32 PM
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I guess I don't understand why my question is so confusing. It's the 5th gear seal. How many 5th gear seals are there on a TC88 mainshaft? It is the seal between the tranny mainshaft, and the 5th gear mainshaft. Sorry for being confusing.
 
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Old 03-25-2012, 03:53 PM
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Originally Posted by M&P340 View Post
I guess I don't understand why my question is so confusing. It's the 5th gear seal. How many 5th gear seals are there on a TC88 mainshaft? It is the seal between the tranny mainshaft, and the 5th gear mainshaft. Sorry for being confusing.
You said 5th gear seal in the tranny mainshaft in the primary and that does not make sense.

The fifth gear seal is inside fifth gear (main drive gear) not in the mainshaft, and certainly not in the primary.

It is the seal between the tranny mainshaft, and the 5th gear mainshaft.
You mean the seal between the tranny mainshaft and the 5th gear.

Get a couple of small sheet metal screws, thread them into the seal and pull it out with pliers.
 

Last edited by Dan89FLSTC; 07-08-2017 at 08:00 AM.
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Old 07-06-2017, 02:35 PM
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Originally Posted by M&P340 View Post
I guess I don't understand why my question is so confusing. It's the 5th gear seal. How many 5th gear seals are there on a TC88 mainshaft? It is the seal between the tranny mainshaft, and the 5th gear mainshaft. Sorry for being confusing.
I understood the question. I'm looking for the same thing, but a little more detail. I know it's there somewhere. I can see the fluid leaking from it, but can't get to it, or find it I should say.
 

Last edited by Tunes from Cleveland; 07-06-2017 at 03:03 PM.
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Old 07-08-2017, 08:04 AM
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Here is a pic of the seal and a fifth gear (main drive gear) on the bench.This seal is often overlooked when hunting down a transmission leak.
 

Last edited by Dan89FLSTC; 07-08-2017 at 08:07 AM.
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Old 07-08-2017, 10:16 AM
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I have used a straightened paper clip with a hook bent on the end to remove a couple of them. BTW, I found that at least some aftermarket seals (Cometic for one) are narrower on the OD than the HD seal. PITA to put one back together and find a leak...An old Indy advised me a long time ago to use nothing but the Harley seals and gaskets, now I do after a couple of redos.
 

Last edited by Lakerat; 07-08-2017 at 10:23 AM.
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Old 07-10-2017, 04:07 PM
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Once you get it out
http://www.georges-garage.com/trans_pre_o7.htm


620080 MAIN DRIVE GEAR SEAL INSTALLER
Will do the trick
 
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