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Main Area => General GS500 Discussion => Topic started by: Iarn on March 17, 2015, 07:05:18 AM

Title: Upper Petcock Brass Fitting Loose. (SOLVED)
Post by: Iarn on March 17, 2015, 07:05:18 AM
One of the two brass fittings where fuel flows from the tank fuel petcock has become dislodged. Every time I try to reinsert it, it is very loose. It falls out at the slightest tug, so removing my tank is a mess and I'm concerned it will fall out during a ride and I'll be without fuel.

How do I secure this brass fitting in its hole?

I can post pictures after work, if needed.
Title: Re: Upper Petcock Brass Fitting Loose.
Post by: Janx101 on March 17, 2015, 09:01:44 AM
I tapped mine back in gently but firmly with a small nylon mallet.....

But... Very loose?

Either eBay a new tank petcock.... Or... Maybe silver solder it? .. Lots of care with that though!
Title: Re: Upper Petcock Brass Fitting Loose.
Post by: sledge on March 17, 2015, 09:10:58 AM
Common problem, and not just with GS5s

A smear of 2 part epoxy will hold it in in place and seal it......a smear that is.

Title: Re: Upper Petcock Brass Fitting Loose.
Post by: Joolstacho on March 17, 2015, 07:10:44 PM
One of mine came out but it was a nice tight fit to tap back in and doesn't leak.
I wonder if it's possible to slightly swage out the brass tube with a taper pin to make it a nice tight fit.
A smear of 24 hour epoxy should work too.
Title: Re: Upper Petcock Brass Fitting Loose.
Post by: rg500gamma on March 17, 2015, 07:16:17 PM
 :cool:
Title: Re: Upper Petcock Brass Fitting Loose.
Post by: ned from PA on March 24, 2015, 07:11:51 PM
I would use JB Weld (original, not quick-set) on the brass tube.  Try to get the glue onto both mating surfaces as best as possible, and leave a chamfered bead of JB Weld around the outside of the tube where it meets the housing.  Allow a full 24 hours to set (at room temp) before use.

I did such a repair on my Ford F-250 carburetor, and it's been good for years.
Title: Re: Upper Petcock Brass Fitting Loose.
Post by: J_Walker on March 24, 2015, 07:45:48 PM
you know.. funny mine started doing this like 3 days ago. its been banished to the outside under a cover tied onto it. until I can care to deal with the fuel just leaking everywhere [bad bowel gaskets on the carbs too  :technical:] not much was left in the tank, so all well.

I was gonna just try to use a tiny cut-off of fuel hose, and shove it up in there... creating a gasket and a really tight seal. I didn't think JB would work, considering it was in contact with fuel..  :embarrassed:
Title: Re: Upper Petcock Brass Fitting Loose.
Post by: Iarn on March 25, 2015, 05:39:45 AM
The fitting from my tank came off in the fuel hose and the hose was pulling it out, preventing a tight fit. Removal of the fitting from said hose and a gentle tapping into its seat with a rubber mallet seemed to secure it well enough, for me. I also lengthened the hose about two inches to alleviate further pulling from the hose on the fitting.

Haven't had much issue thus far, though the screw clamps I'm using to secure the hoses because I'm cheap are doing a poor job of preventing leaks.
Title: Re: Upper Petcock Brass Fitting Loose.
Post by: Suzuki Stevo on March 25, 2015, 04:49:23 PM
Tap it in with a mallet then swage/swedge the fitting around the tube by center punching it in 4 places, my brass tube came out right away, this is how I permanently repaired mine.

Center punching the fitting around the tube displaces the metal, expanding it so it squeezes the brass tube.

EDIT: You don't need to get "AnImAl" with the hammer and punch to pick up the few thousands of an inch it will take to make it tight

http://en.wikipedia.org/wiki/Swaging (http://en.wikipedia.org/wiki/Swaging)