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Leaking Hydraulic tank:

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Dick in Ore..

07-01-2003 23:09:07




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On my backhoe the hydraulic tank has a small leak. The tank is actually an upright support arm on one side of the tractor. The leak appears to be a small crack on one of the welds.
Any suggestions on how I can easily repair this leak? It would be very difficult to remove, so it would be advantagous to be able to stop the leak without removing the tank..

Any suggestions would be appreciated.

Thanks,
Dick

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JMS/MN

07-03-2003 00:07:17




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 Re: Leaking Hydraulic tank: in reply to Dick in Ore.., 07-01-2003 23:09:07  
I would just grind the crack and reweld it. It wouldn't hurt to drain the oil from the tank, since that might interfere with getting a good weld- just like water does when you need to weld a water pipe.



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Dick in Ore..

07-03-2003 10:07:09




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 Re: Re: Leaking Hydraulic tank: in reply to JMS/MN, 07-03-2003 00:07:17  
Thanks for the suggestion JMS/MN..
What about danger of fire? Is there some way to keep the tank from catching on fire, even if I do drain the oil from the tank. Also,, how would you suggest welding the crack once it is ground out? Type of rod etc.

Thanks again for your suggestions,,

Dick



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JMS/MN

07-05-2003 12:23:28




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 Re: Re: Re: Leaking Hydraulic tank: in reply to Dick in Ore.., 07-03-2003 10:07:09  
Since it is a hydraulic oil tank, I wouldn't worry about fire, but I'd certainly have the extinguisher handy. No danger of explosion. I would v-grind the crack about 3/4 the thickness of the tank wall, and use the wire feed to weld it. Haven't used a stick much for the last 15 years- the wire feed is so much easier to use and with no slag to create holes in the weld, I can get a good solid weld. I think the heat of welding will cook out any oil that's in the steel.

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fred kobs

07-02-2003 20:38:42




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 Re: Leaking Hydraulic tank: in reply to Dick in Ore.., 07-01-2003 23:09:07  
If you can see where it's coming from, rub a bar of IVORY white soap into the leak. Temporary fix but might get you thru the season if your leak isn't too bad. Don't laugh, it works. I learned that trick from an oil delivery man years ago when he delivered a 55gal. drum that leaked out the bottom. Works on diesel fuel also but washes out rather fast from the sloshing. He said Ivory is the only brand that works. Might be worth a shot. Fred

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TO-35Man

07-02-2003 04:49:13




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 Re: Leaking Hydraulic tank: in reply to Dick in Ore.., 07-01-2003 23:09:07  
As advantagous as it would be to try and repair theres really no good way to repair a crack at a weld.You could try jb weld or others surface repairs but the problem is that the oil has gotten into the pores of the metal and odds of sealing it are against you.You also have to consider that if its broken or cracked at the weld that the torque and movement of the tractor will only worsen the crack in the tank espically since its mounted up right. I would recommend two possible aproaches to this repair. 1)Find a good welder and see if it can be welded on the tractor.
2) Or remove it and reweld it this way the tank can be drained and all the welds can be inspected and repaired easily.
You maybe better off to bite the bullet now to save a larger problem in the future such as a low fluid condition, thus creating abnormal pump wear and faliure.
As my grandpa use to say better to pay a little now...or lots later....
good luck hope this insight helps..

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