Three point valve broken!!!

[clemsonfor]

I was disking today. And as i was passing too close to my feeder i slamed on brakes so the disk would not catch the leg of the feeder. I had just lifted the disk and put the throttle in so i was maybe going half to 3/4 speed i guess when i went to hit brakes. All was well i went on by slow. Turned around for a pass back other way put lever down and pulled throttle back. It was not working tractor so i look back to see disk still in air?? I got off looked. Nothig was jambed or hung disk was just in air. If i stood on backnot would bypass the valve and disk would slow drift down just to go back up? When throttled up you could hear the releif squeeling??

Drove back to house and was sure it was a balve issue since the arms would raise back after pulled down. I get the valve off. Pulle the ends off and the shaft would not easy push out, i was sure that was the issue. It was like it got wedged too far back...maybe inertia let it get jambed...there was some corrosion and a rough spot on the back side the spool may of got hung on? Anyway i knocked it out with a socket put back togeather seemed to be sliding. Went to put caps on and as i tightened the button shot out. Picked it up and the circlip had busted out of the grove and let it fly out the front side!.

So now i either need to get that chrome buttton and try to put it back togeather or get the new one now that Hoye has them back in stock. We were just talking about these valves a week or two ago in a thread. I mentioned they were out but they have them back in stock i see. I mentioned thay mine was worn as it bypassed fluid and the implement would drift down when tractor was off or at low rpm. Maybe i just buy one...BUT its $300!!!

Anyone else had a valve break?

 

[kenmac]

Must be something in the air ! LOL I was also disking when the battery blew. you were disking when the 3 pt broke

 

[Indirocz28]

I wish my 3 point worked also.
I don’t know if it is that top valve or the o-rings on the larger piston inside of the front of the trans behind the lock out valve assembly.

Mine was also stuck/seizes after I had rebuilt the enigine and also found the lockout knob to be almost completely shut.

 

[clemsonfor]

Must be something in the air ! LOL I was also disking when the battery blew. you were disking when the 3 pt broke

Haha, well i was. I had just lifted the disk at the end of a row. When i hit the brakes to i didnt take out my deer feeder. When i turned around to go back, disk would not go down even when i put lever down.

Yea you saw i commented on your post, i thought the same thing!! Both disking!

 

[clemsonfor]

Must be something in the air ! LOL I was also disking when the battery blew. you were disking when the 3 pt broke

Did you get that new valve from houe? What was wrong with your old one?

 

[kenmac]

Did you get that new valve from houe? What was wrong with your old one?

no, I never bought one. I bought the Kubota instead LOL mine still leaks down when the motor is off

 

[clemsonfor]

no, I never bought one. I bought the Kubota instead LOL mine still leaks down when the motor is off

Mine leaks down as well. I think i may buy the new one and just be done with it and not worry will it get into that same position again, im 3 hours from my house and all my tools, and then there is the leak down when is off it would fix. Which is not a big deal but the height difference at low rpm vs full speed can get anoying. You can set the mower deck then take off you have to mess with it at operating speed as it will sag a bit at lower rpm.

 

[Indirocz28]

Mine leaks down as well. I think i may buy the new one and just be done with it and not worry will it get into that same position again, im 3 hours from my house and all my tools, and then there is the leak down when is off it would fix. Which is not a big deal but the height difference at low rpm vs full speed can get anoying. You can set the mower deck then take off you have to mess with it at operating speed as it will sag a bit at lower rpm.

This is the one with the banjo bolt under the seat on top of the transmission correct?

 

[clemsonfor]

This is the one with the banjo bolt under the seat on top of the transmission correct?

Yep your correct.

I just ordered one of the new valves Hoye has. They just recently got them in stock. I probably will be one of the first ones I bet. I'm sure I will be the first on this forum to try it out.

 

[Indirocz28]

Yep your correct.

I just ordered one of the new valves Hoye has. They just recently got them in stock. I probably will be one of the first ones I bet. I'm sure I will be the first on this forum to try it out.

I am debating on buying it as well. I probably need to call them and confirm that it is bad in some way.
I guess if I pull the main piston out behind the lock out valve knob and inspect it that should confirm the other is bad. Mine didn’t explode apart like yours did, I don’t think. Yet there is still much trouble with operation.

 

[clemsonfor]

Unless your oring had a huge cut in it or the cylinder wall galley there is nothing more to that part.

Lift the implement. Twist the lockout knob closed. Cut off tractor. If the implement stays up the cylinder piston and oring are perfect. If it slow leaked down O ring is probably worn but it will still work. If it drops like a sack of rocks you have problems in there.

 

[clemsonfor]

I should have added twisting the lock out valve closed all the way takes the valve out of the equation. It locks fluid into the piston past the valve. So even with a suspect valve it would stay up with that knob closed.

 

[Indirocz28]

I should have added twisting the lock out valve closed all the way takes the valve out of the equation. It locks fluid into the piston past the valve. So even with a suspect valve it would stay up with that knob closed.

Okay, so that confirms the main piston behind the lockout knob/valve is good then if the implement stays up, with it locked out.

Makes me curious as to what is wrong internally inside my 3 point control valve.

 

[clemsonfor]

Okay, so that confirms the main piston behind the lockout knob/valve is good then if the implement stays up, with it locked out.

Makes me curious as to what is wrong internally inside my 3 point control valve.

How tight is that internal fit in the valve? It's a machine fit and is very tight tollerence. Yours isn't sloppy is it? Knick internally from some prior ham fisted owner? It is turned around in the right direction? I don't think it would work other wise?

If you disconnect the lever from it you should be able to push that chrome button by hand or a tool for leverage and get it to raise or lower ruling out some misadjusted linkage or whatnot. The more you push it in the higher implement should go.

 

[clemsonfor]

Thought I would post a pic. Shows where the circlip busted out the Groove on the chrome button, and a random piece of circlip that fell out this time when I pulled it apart again. It had to come out of that center piston part , what retains that inner button in there. That's the only place I remember a split ring snap type ring. There is that internal shaft, a ball bearing...from what I remember and a tiny O ring in there. I do know it will go togeather back words and either works erratic or not at all, been there don't that.

Now let's see if the pic will load from my phone. Can't see a way to put a pic in from the phone...yall will have to wait till the morning when I am at the computer for the pic.

 

[kenmac]

Thought I would post a pic. Shows where the circlip busted out the Groove on the chrome button, and a random piece of circlip that fell out this time when I pulled it apart again. It had to come out of that center piston part , what retains that inner button in there. That's the only place I remember a split ring snap type ring. There is that internal shaft, a ball bearing...from what I remember and a tiny O ring in there. I do know it will go togeather back words and either works erratic or not at all, been there don't that.

Now let's see if the pic will load from my phone. Can't see a way to put a pic in from the phone...yall will have to wait till the morning when I am at the computer for the pic.

yeah, I wish there were an easier way to add pics like there is when sending a text with added pics

 

[clemsonfor]

Ok, sorry i didn't come into the office first thing, i went out to the field and then came in at the end of the day, but as promised here is a picture of the valve, the insides (minus, what i will call the internal piston in the center being disassembled) and you can see the broken pieces.

 

[Indirocz28]

Well mine looks just like yours, only not broken physically to the eye.
The figment of that piston inside of the bore on mine is extremely tight. If you may recall after I got it running again, the 3pt valve was stuck solid. I had to press the piston out of the note in that housing.

I was able to get it to slide back in and move again freely, and then re-assembled. Only now there is obviously the problem of an unusable 3pt due to how it acts.

I did raise the 3pt up with the box blade on it, and set the lock out valve. I left it for 24hrs and there was not even a smidge of release. However as soon as I unscrewed the lock out the box blade immediately fell to the ground.

 

[clemsonfor]

Sounds like the valve is suspect. It is a machined fit that center portion to the valve bore. Close tolerance fit.

And it will not stay up with the service lockout open and tractor running? Most of ours dropped with tractor off, not like other tractors you see them stop with implement in the air and it stays forever.

 

[Indirocz28]

Sounds like the valve is suspect. It is a machined fit that center portion to the valve bore. Close tolerance fit.

And it will not stay up with the service lockout open and tractor running? Most of ours dropped with tractor off, not like other tractors you see them stop with implement in the air and it stays forever.

Tractor running, service lockout open, the only way it will stay up with the box blade on the back is to have the 3pt control handle pulled all the way back. This causes issue of course because it is hitting the pressure relief the entire time. Since adding the loader, when this happens, it also makes the loadervalve leak around the joystick control ports, and fills up the boot.

Once I take the box blade off, and tractor running, the 3pt will stay up for a little bit on its own, but only if I close the speed lever under the seat ALL the way. This obviously just slows the process of it going down, but it takes a while.