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Transmission leak from stud

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03Roadking
Posts: 195
Joined: Wed May 04, 2005 4:17 pm

Transmission leak from stud

#1

Post by 03Roadking » Fri Aug 05, 2005 7:08 pm

Description: I found that the leak is one of the studs on the bottom of the trans

I checked back 400 days and 200 threads Maybe someone remembers or knows this
I replaced the main seal behind the sprocket three times but this last time I didn't put it all back together I let it set for two days with all the sheet metal off I found that the leak is one of the studs on the bottom of the trans Someone once posted about the paper trick or tape trick I assume they were referring to plumbers tape on the threads of the stud but I want to be sure, if anyone knows or remembers please reply
I know the proper way is to weld and re-tap but I sure would like to ride the rest of summer before tearing it down



RussW
Posts: 170
Joined: Sun Apr 08, 2007 3:49 am
Bikes: 1961 FL
2007 Kaw. Vulcan 2000
Location: Western Mass

Re: Transmission leak from stud

#2

Post by RussW » Fri Aug 05, 2005 8:45 pm

Another option, they make those mount studs in a couple of oversizes should the stud be too loose a fit to be sealed with tape. Stock is 3/8-16x3/8-24, you can get 7/16-14x3/8-24, and 1/2-13x3/8-24. Should save you from a tear-down and reweld, at least for a while. I saw them in the J&P catalogue, but should be available from others.

Red55FL
Posts: 82
Joined: Fri Jan 14, 2005 3:35 am
Bikes: 1955 FL on a 54 frame
2012 Heritage Softail Classic
Location: Inola, Oklahoma

Re: Transmission leak from stud

#3

Post by Red55FL » Sat Aug 06, 2005 12:36 am

03Roadking
If it were my bike & the stud is not loose in the threads, I would---
Drain the oil out of the trans.
Remove the stud.
Clean the stud and the threads in the case with CRC contact cleaner or a good brake cleaner.
Reinstall the stud with Lock Tight (red or blue).
Let it set over night, then reassemble everything and refill the trans.
Ride it and check for leaks.
If the threads are worn to the point you can feel slop in them, use three or four wraps of Teflon tape on the studs after cleaning the threads.
If that doesn't work, then you may need to do as RussW said.

Red

03Roadking
Posts: 195
Joined: Wed May 04, 2005 4:17 pm

Re: Transmission leak from stud

#4

Post by 03Roadking » Sat Aug 06, 2005 4:36 am

Thanks Russ and Red
I am going to pull the trans tomorrow I had it out about three weeks ago and the threads felt good and tight on all of them I hope I didn't pull the thread went I put it back in I will let you know Sunday what happens

03Roadking
Posts: 195
Joined: Wed May 04, 2005 4:17 pm

Re: Transmission leak from stud

#5

Post by 03Roadking » Thu Aug 11, 2005 4:26 pm

Hello
I pulled the trans last Saturday the threads felt really good but they were not tight at all when I went to pull the studs they came out very easy I cleaned the hole and the threads with brake shoe cleaner I put a drop of lock tight and a wrap of tape (I know over kill) and put them back in It have been sitting for two days without any leaks I am going to take it out tonight for a little run but I think it is taken care of
Thanks for the suggestions

spinner
Posts: 11
Joined: Thu Jun 15, 2006 10:24 am
Bikes: 58/55 Mongrel Pan
Location: Dubai, UAE.

Re: Transmission leak

#6

Post by spinner » Tue Apr 21, 2009 8:16 am

Hi RK,
I know this was posted some time ago, but how did you go with the thread seal on your gearbox studs? I have the same. Both front studs leaking, and feel loose in the thread when I removed them.
I was considering going oversize, but wanted to know how your tape and Loctite deal went off? Any info really appreciated. Many thanks and kind regards, Spinner.

hjans
Posts: 219
Joined: Fri Mar 21, 2008 5:56 pm
Bikes: HD FLH'59
Location: Holland

Re: Transmission leak

#7

Post by hjans » Tue Apr 21, 2009 4:01 pm

had the same
put in teflon tape ( plumbers tape ??)
problem solved.
most easy way-most effective way-lowest cost way-safest way

Hans

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