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Fuel line fix

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Doug

04-03-2003 06:01:31




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I have an older Allis HD6 crawler that has a leaking fuel line(diesel). I believe the line is copper. I believe that the line has worn throught due to years of vibration against the frame. I can get to the leaking spot but I can;t get to the connections to take the entire line off without tearing into the underside of the machine. Is there some way to patch this line without taking it off? I thought about a hose clamp with rubber gasket but was afraid the diesel would disolve the rubber. Any suggestions out there? The leak is under the seat which I can easily take off and access but not much room to maneuver. Thanks in advance.

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Don LC

04-05-2003 06:27:27




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 Re: fuel line fix in reply to Doug, 04-03-2003 06:01:31  
Cut the line with a very small tubing cutter...slip on a couple ctamps and about 2" of rubber fuel hose..... ..... .



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mj

04-03-2003 15:25:14




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 Re: fuel line fix in reply to Doug, 04-03-2003 06:01:31  
Can you cut out an inch or so out of the line at the break and then slip a section of neoprene fuel-line hose over each cut end? You could secure the hose on each side with worm-drive hose clamps.



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another shade tree idea

04-03-2003 14:12:10




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 Re: fuel line fix in reply to Doug, 04-03-2003 06:01:31  
when I did the seal-all 'repair' I split a piece of hose, coated the inside with seal-all, and clamped it down with a hose clamp. Maybe the same idea with RTV or JB Weld as the hose 'liner' would hold in your application?

ksbob



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Paul Janke

04-03-2003 17:21:40




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 Re: Re: fuel line fix in reply to another shade tree idea, 04-03-2003 14:12:10  
On a diesel the RTV is probably OK, but it hates gasoline. RTV must absorb gas, because it swells forever when in contact with it. I learned the hard way.



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T_Bone

04-04-2003 05:53:36




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 Re: Re: Re: fuel line fix in reply to Paul Janke, 04-03-2003 17:21:40  
Hi Paul,

Permatex red or copper is fuel rated for continous fuel use.

T_Bone



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thurlow

04-03-2003 14:08:02




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 Re: fuel line fix in reply to Doug, 04-03-2003 06:01:31  
If this is not a pressure hose; just go to your local parts house (may need to be one that deals with farmers, industrial,etc rather than just automotive) and get rubber hose that's impervious to diesel/gasoline in proper dimension..... ..



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ksbob

04-03-2003 14:01:27




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 Re: fuel line fix in reply to Doug, 04-03-2003 06:01:31  
You might look at Permatex part number 12020 - it's a two part putty for fixing gas tanks, but I've had it on a diesel storage tank for 2 years now with no problems. With diesel you do have to get the area clean and push it down as hard as you possibly can to get it sealed. I have no idea how it would do with the vibration in your application. I've also used a product called seal-all on a leaking line to keep going for a while but only for a couple of days till I could stop and change the line.

HTH
Bob

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Peter(NY)

04-03-2003 10:50:34




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 Re: fuel line fix in reply to Doug, 04-03-2003 06:01:31  
Can you possibly cut it and use a compression fitting? Or if it is steel, cut it and flare the ends and use a proper fitting. Good luck to you.



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Ludwig

04-03-2003 10:17:27




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 Re: fuel line fix in reply to Doug, 04-03-2003 06:01:31  
Diesel rubber lines exist. My Mercedes diesel car has rubber lines from the steel hardlines under the car into the pump.



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C

04-03-2003 07:12:21




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 Re: fuel line fix in reply to Doug, 04-03-2003 06:01:31  
Fuel line is normally NOT made out of copper tubing. It will work harden and become brittle from the vibrations of the crawler running and working. That is why steel tubing is used. Steel tubing is often copper plated or terne plated (tin/lead mix) to prevent rusting. Perhaps yours is copper plated and thus you think it is solid copper. OR someone has replaced it with copper long ago and now it has workhardened and broke?
The steel tubing is readily available as brake line at your local auto parts supply. If you need longer than the ready-made pieces you can get a roll about 25 feet at most places.

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