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135 hydraulics

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J. B.

04-07-2001 10:36:29




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I have a 135 White that I believe has a hydraulic problem. I haven't had it too long and am not too familiar with White, but it has a closed center system and the problem is when you use the remote valve on a small demand if you fully extend the control lever, it squeals like an open center system that is trying to pump full volume against a small demand. If you move the lever to kind of match the load, everything sounds and works fine. Also the hydraulic couplers are very hard to uncouple, could this be the couplers or could it be in the remote valve?

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Wrenchbender

04-08-2001 08:10:01




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 Re: 135 hydraulics in reply to J. B., 04-07-2001 10:36:29  
The easy answers first. The couplers were hard to couple and uncouple on this tractor, the remote valve has poppets in it that keep remote cyls. from leaking down or drifting up, this traps hyd pressure in the hoses and makes the couplers hard to work. The best soulution is to put a set of Pioneer breakaway couplers on your tractor. They have levers so the pressure is shut off and then the hoses release more easily, they are expensive. Your squealing noise may be as simple as the ends on the hoses, they need to be the one with the nipple shaped end and not the ball. There is a restrictor valve located below the upper spool, this is to regulate the flow back from the cyls.. I would try to isolate the problem by putting the cyl in question on the other remote valve or a different cyl. on the remote that is squealing. Play around with it a little and see what happens, report your findings back here and I'm sure someone will be able to help you out. Good luck, WB.

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J. B.

04-08-2001 10:31:30




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 Re: Re: 135 hydraulics in reply to Wrenchbender, 04-08-2001 08:10:01  
Thanks for the advice. The couplers on the implement I was using, actually it was an auger wagon, do have the Pioneer ends on them, and both valves squeal when you fully entend the lever. One valve runs the folding mechanism of the auger, the other operates the gate to regulate the flow of grain into the auger. I will put Pioneer couplers on the White since I have other tractors with Pioneer couplers. One other question, aren't the very newest Pioneer couplers supposed to couple and uncouple under pressure without the shut off lever? Maybe this wouldn't work on the White with the poppet valves, just thought I didn't want to get the very expensive shut off type. It seems that moving the lever on the valves when the tractor is shut off doesn't have any effect on them uncoupling any easier. About the only way they uncouple easy is if you just let it sit for a time. I do this if I don't have to hook onto the next implement immediately, but this isn't always practical. One funny thing though is they always seem to couple easily no matter what, just have a heck of a time uncoupling.

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MCL in IN

04-07-2001 18:34:21




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 Re: 135 hydraulics in reply to J. B., 04-07-2001 10:36:29  
We had a 2-135 and still have a 2-105. The difficult couplers were standard equipment I think. We have a 170 Workhorse now with the lever couplers. Much better.



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Delbert

04-07-2001 11:18:19




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 Re: 135 hydraulics in reply to J. B., 04-07-2001 10:36:29  
I had a 2135, when i retired I sold my farm equipmet and kept my toys. It sounds like you meed to adjust the flow control adjustments on the hydrolics. I don't remember the specifics to explain what to do, if you have an operators manual it is explained there. The couplers are hard to couple and uncouple, work the hydrolic levers so the pressure is not on the hose you are uncoupling, then do the same for the other hose, with the proper procedure it is much easier, experiment to find the best method, or you could buy some of the expensive couplers with a valve. Hope this helps. Delbert

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darryl

06-26-2004 20:28:41




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 Re: Re: 135 hydraulics in reply to Delbert, 04-07-2001 11:18:19  
white tractor couplers are notorious to uncouple , even when the pressure is off, if you don't know how to do it. what i do is, once the pressure is off, push in on the coupler with my right hand, and then reach behind the mount with my left hand, and hold the hose back. the equipment end should easily uncouple if you do this. i used to dread hooking up and unhooking for this very reason. but, it's a cinch if you can understand what i'm trying to explain. e-mail me if you don't. i just realized that this discussion is 3 years old. you probably don't even still have the tractor! well, maybe someone else will benefit.

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