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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
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How do I remove tight plugs from hydraulic pump

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Pete

04-19-2004 14:46:35




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I am working on putting a loader on my 1650 (the advice on mounting the frame under the axle was right on). I have an external valve to run the loader off of and I am trying to get the plugs out of the hydraulic pump so I can hook the hoses up. I have destroyed a 3/8 ratchet trying to break them free. I went and got a 3/8 drive breaker bar and tried putting a little heat on it with a propane torch but I still can"t budge either plug. I am afraid I am going to strip the square drive out of the plug if I keep going with it. Anybody have a magic bullet for this situation. I don't have an acetaline torch but I do have an arc welder.
Thanks
Pete

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Deere Mechanic

04-20-2004 06:05:26




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 Re: How do I remove tight plugs from hydraulic pum in reply to Pete, 04-19-2004 14:46:35  
Pete, I have had the same problem happen to me before. I used some spray lubricant, much like WD-40, I think it was Zepressive. Spray it on the threaded areas moderately. Let the lubricant set and soak for about 10 minutes or so. Take a hammer and tap a few times on the plugs. I used a 1/2 inch drive ratchet w/ a 3/8 inch adaptor on it.



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j meyer

04-19-2004 17:46:02




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 Re: How do I remove tight plugs from hydraulic pum in reply to Pete, 04-19-2004 14:46:35  
I had this very problem today at work! I am working on a 966 IH and a 3/8 inch plug just wouldnt budge. Heating it wouldnt even work. My co-worker reminded me by welding on an oversized nut would both give you an new surface to torque on, but also to heat the plug up. For a 3/8 inch plug, get a 3/4 inch nut and weld through the threads and keep going until our weld inside the old pipe plug "grows" enough to weld on the threads of the nut. If your weld is good and strong, the welded nut will be able to unscrew that stubborn pipe plug! Its a great trick, and if your weld is good, it works every time! One other though would be is before welding a nut onto the old pipe plug is to beat the top of the plug with a hammer, it loosens the rust. Having a 3/8 inch plug that fits a 1/2 inch ratchet works good too, but if your a novice mechanic, its really not neccessary to own. I tend to use mine alot at the implement, but its up to you on justifying buying one. But anyways, I'd highly recommend welding that oversized nut on. Just be sure to let it cool enough so the bolt isnt glowing any. Let me know how it turns out!

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J. Schwiebert.

04-19-2004 18:22:34




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 Re: Re: How do I remove tight plugs from hydraulic in reply to j meyer, 04-19-2004 17:46:02  
If you heat the plug to a dull red, bees wax applied to the threads will tend to loosen them too. When I worked in the other shop that was a common thing to do on Chevie oil gallery plugs (1/4 inch ). We also had a set of Snap-on sockets for plugs like that. Also I think I know what you are trying to accomplish. Send me your email address, I can save you some grief.



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RAB

04-19-2004 15:49:48




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 Re: How do I remove tight plugs from hydraulic pum in reply to Pete, 04-19-2004 14:46:35  
I hope you are not using a 3/8 drive for fitting that loader!
Ratchets, as you have found, are not for loosening (or final tightening?)of fixings. Use the largest drive T bar you can for loosening, and tighten to the appropriate torque with an appropriate wrench. That way you will not over-torque your socket set loosening, and over torque the fitting on re-tightening.
I would think a 3/4 drive socket set might be appropriate or a GOOD quality 1/2 drive for fitting a loader.
Regards, RAB

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Pete

04-19-2004 17:09:35




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 Re: Re: How do I remove tight plugs from hydraulic in reply to RAB, 04-19-2004 15:49:48  
No, I have been using a 3/4 inch drive socket to mount the loader with. I am using the 3/8th to try and get the plugs out because the square slot in the plug is 3/8 inch and the only thing I have to get on it is a 3/8 driver



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Wrenchbender

04-19-2004 17:20:41




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 Re: Re: Re: How do I remove tight plugs from hydra in reply to Pete, 04-19-2004 17:09:35  
They make a square drive to remove pipe plugs. A 3/8" breaker will work sometimes, but it will break at the ball to hold a socket on. You probably found that out :-). You may have to have an acetylene torch to heat the housing. WB.



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Myron KY

04-19-2004 17:54:27




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 Re: Re: Re: Re: How do I remove tight plugs from h in reply to Wrenchbender, 04-19-2004 17:20:41  
WB, Where do you get this "square drive" to remove pipe plugs at? I've always used the 3/8 ratchet and had the same results as Pete. ":^(

Myron KY



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Wrenchbender

04-19-2004 19:30:18




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 Re: Re: Re: Re: Re: How do I remove tight plugs fr in reply to Myron KY, 04-19-2004 17:54:27  
Myron, the one I have is a "Snap On". I'm sure the other tool companies sell them also. WB.



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Mike (WA)

04-20-2004 09:27:32




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 Re: Re: Re: Re: Re: Re: How do I remove tight plug in reply to Wrenchbender, 04-19-2004 19:30:18  
I've also used "key stock" or "bar stock" for this- use a long enough piece so you can grab the outboard end to stabilize it, then pull on it right next to the pipe plug with an 18" Crescent wrench- a wrench that big won't flex enough to slip off the bar, and has a long enough handle that you can get some real torque on it. The bar stock won't twist or break if you are applying the pressure right up tight to the plug.

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Myron KY... Thanks Mike.

04-20-2004 09:49:18




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 Re: Re: Re: Re: Re: Re: Re: How do I remove tight in reply to Mike (WA), 04-20-2004 09:27:32  
nm



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Myron KY...Thanks WB

04-20-2004 04:59:23




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 Re: Re: Re: Re: Re: Re: How do I remove tight plug in reply to Wrenchbender, 04-19-2004 19:30:18  
nm.



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