Frozen Loader controls: Kubota Review  -- Kubota Tractors Discussion Forum and Review Frozen Loader controls: Kubota Review -- Kubota Tractors Discussion Forum

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 01-04-2005, 11:06 Post: 103422
Zippy-Do-Da



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 Frozen Loader controls

My tractor is a 'bota L3400. I have been having a problem with my 4 way controller. It seems to be frozen in two locations. I can raise my boom, but can't lower it (Pushing up on the control). I can raise my bucket but can't lower it back down (Pushing right on the control). I can't even move the control into that location, as if there is an ubstruction. It seems to have progressively gotten worse. It would ususally thaw after 40 min of run time, but the other day, I had to run the tractor for 6 hours in order to get them to thaw. After taking a break for a half hour and let the tractor idle, I came back to find they are frozen again.

I spoke with the dealer and he was telling me to drill a 1/8 inch into the back of the control. I don't feel to comfortable doing this as I couldn't quite understand where he was talking about. Has anyone had this issue, and solved it by this method? Can anyone post a picture describing where to make the hole to relieve moisture buildup?






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 01-04-2005, 12:01 Post: 103426
Murf



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 Frozen Loader controls

The dealer is on the right track, but I think there's a train coming at him.

What he is talking about is drilling a vent or weep hole to drain off the condensation which is freezing and locking up your FEL control. This was a common trick used with older Dodge distributor caps too.

The problem is, it won't stop the problem from happening.

The fastest way to free up the controls is to use the fluid itself to make heat right in the control valve. Friction makes heat, so speed up the idle to about 1,000 rpm and use a bungee cord to open the bucket curl valve in any direction it will move and leave it there. This will cause the relief valve to open to bleed off the excess pressure and this in turn will heat up the valve and melt the ice.

We have had to do this for years with ours that we use for snow removal commercially.

Best of luck.






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 01-04-2005, 13:16 Post: 103438
Zippy-Do-Da



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I am probably paranoid, but will that procedure cause any damage over time? I beleive there is a blurb in the manual about not doing that, but if it works and is not harming the hydraulic system that will work for me. I take it this doesn't happen to tractors with cabs?






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 01-04-2005, 14:29 Post: 103448
Murf



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 Frozen Loader controls

A two part question needs a two part answer.

First, yes, prolonged use like this, say to run a device instead of using a remote designed for it, may result in premature wear of the relief valve. In reality, my machines probably accumulate more hours in a month than the average consumer's would in several years, we have yet to have a single problem from doing this.

Secondly, no, cab-equipped tractors are NOT immune to this. On almost every cab-equipped tractor the valve is outside the cab, it is run remotely via a cable system and a joystick that is located IN the cab.

Best of luck.






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 01-04-2005, 15:07 Post: 103449
beagle

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 Frozen Loader controls

The only freeze up I've had on the loader valve is the float detent. With about 10 minutes of use, the oil warms enough to thaw it out. Any freezing beyond that would tempt me to try an oil pan heater for a couple minutes on the valve body. Haven't tried it, but I would if I needed to.

Continuous running through the pressure relief sounds a little cruel for my poor frozen tractor.






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 01-04-2005, 15:11 Post: 103450
Art White



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 Frozen Loader controls

We currently are working with them by filling them with grease and that seems good so far for the past year or two as we have been getting them.






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 01-04-2005, 15:31 Post: 103453
Zippy-Do-Da



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Filling grease where? What kind of Grease, lithium?






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 01-04-2005, 23:12 Post: 103492
grassgod

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zip - I had the same problem as you not long ago. I was advised by the man that I beleive has all the answers & he advised me to spray white lithium grease on the valve that is mounted under your right foot (as your sitting on the seat). It comes in a spray can like wd40. I coated the daylights out of it & have plowed with my kubota twice since then with no freeze up. I was also advised to fill it up with grease but couldnt figure out were to inject the grease. Hope this helps.






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 01-05-2005, 19:55 Post: 103562
denwood



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 Frozen Loader controls

I had this problem with a Kubota and a JCB 1400 backhoe. Both had cable operated items. On the kubota, the moisture got in the cables that went from joystick to valve, and on the JCB, someone pulled the shutoff cable and left it off, and it froze in off. We used a torpedo heater to thaw it, but for the kubota, we had no easy fix other than repeated thawing. I have seen a syringe type of thing for sale that goes over one end of cable and injects oil down the cable. Sounds good but never tried it. Just one of the reasons I don't like cable operated valves. My kubota R520 and JD 4300 have direct joystick to valve connection and not a problem yet.






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 01-05-2005, 20:04 Post: 103563
grassgod

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Mine does not have a cable & still froze.






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