Creepy loader

[Rail9222]

Hi guys
I have an issue with my YM240 and hope you all might point me in the right direction. I made a short vid that shows what is going on.

Crap...it wont let me post links.

Any constructive advise is appreciated.

Thanks

 

[Rail9222]

Hi guys
I have an issue with my YM240 and hope you all might point me in the right direction. I made a short vid that shows what is going on.

Crap...it wont let me post links.

Any constructive advise is appreciated.

Thanks

 

[Rail9222]

Hi guys
I have an issue with my YM240 and hope you all might point me in the right direction. I made a short vid that shows what is going on.

Crap...it wont let me post links.

Any constructive advise is appreciated.

Thanks :thumbsup:

 

[Rail9222]

YM240 - YouTube

 

[Rail9222]

All loader cyls have been rebuilt. New screen in the system. Also new pump. The 3 point does bleed down when it's shut off but it takes a while. I haven't messed with the 3 point valve. I was hoping it could be an adjustment.

 

[California]

'They all do that.' Well most of them after they've been in service 40 years. I think it's fluid getting pushed past the 3-point cylinder's piston ring, by the weight of the rear implement. Or possibly past the 3-point control valve.

On my YM240 I normally have a backhoe mounted that is the maximum weight the 3-point can lift. If I keep it lifted it causes back pressure, and the loader gradually rising in float position, like you described.

With the loader valves at mid position (not float) and as the backhoe gradually moves down over several minutes, I can see pressure rising on a gauge I have ahead of the loader valve input.

I replaced my loader valve because it dribbled. That didn't make any difference in the loader-rising issue, so I don't think the problem is related to the loader valve. Float should allow fluid to flow back to the sump but the pressure from the falling implement seems to block this.

I decided to just live with it, it isn't hard to avoid using float when I don't need it.

 

[Rail9222]

Thanks for the reply. Would be nice to have this function work as designed but I think your right and I need to live with it.

 

[careyo63]

One thing That I see may help and Cali's right. My Ym2000 is the same 3pt. setup but no loader and I'm not there. But look over at your lift handle and make sure it's all the way forwards/Down position. And then I noticed that the spring to the 3Pt. looks to have Tension on it which is applying pressure to your 3Pt. control valve. You have a Lift handle Lock/Stop and it may not letting it go all the way down. So if that's correct remove it. Then The spring to the 3pt. valve may have a lot of pressure on it still causing the 3pt. to try and raise at all times. So basically Lift handle all the way forwards/Down position. No lock preventing that and no spring pressure. But you may want to set the spring start pressure as you raise the handle. I had to set mine like that but again no loader on the Yanmar. Just a guess that may help. Oh make sure the 3pt lock between your legs is open all the way also. the flat knob in the Pic.:2cents:

 

[rScotty]

I'm confused....are you concerned with the 3pt creeping down or with the FEL arms creeping down? How are your hydraulics hooked up? Does the same pump drive both 3pt and FEL simultaneously? Some do...and some have a separate FEL pump and reservoir.

I ask because most older tractors will creep down, but it takes an hour or more for most to do that. It isn't something you can watch in a 5 minute video. I don't mind either end creeping down if they do it slowly because like I said....old tractors do that. But I do expect them to stay up for an hour or so when I'm doing chores.

You have that knob that will lock the 3pt hitch. Is it working?? It should hold up just about indefinitely when the knob is closed. If not, its probably the 3pt cylinder/piston/rings. Easy to fix on a Yanmar.

On the other hand it it is the FEL And if you need the front bucket to stay up - and the cylinders are rebuilt good as you say - then I would guess you could just put a similar on/off valve in the loader hydraulic line. I've never actually done that, but it ought to work.

What one usually does if the FEL loader still drops after a cylinder rebuild is to replace the loaders directional valve block complete. Surplus Hydraulics has them for a few hundred bucks.
rScotty

 

[California]

I think he's talking about back pressure from the implement falling, pushing the loader up, if the loader was left in float position. My YM240 does that.

 

[Rail9222]

Cali is right. When the 3 point is down the float function works when the 3 point is up the fel creeps up rendering the float function useless.
I believe it is either the 3 point linkage or the valve having an internal leak. I just thought there might be something hereditary with it that I should look for.

 

[careyo63]

that lock knob is huge and should be a CK-4150. It's really small . I think it's preventing your Neutral Pos. as you say. May not stop it all but slow the raise down I believe.

 

[clemsonfor]

I'm confused....are you concerned with the 3pt creeping down or with the FEL arms creeping down? How are your hydraulics hooked up? Does the same pump drive both 3pt and FEL simultaneously? Some do...and some have a separate FEL pump and reservoir.

I ask because most older tractors will creep down, but it takes an hour or more for most to do that. It isn't something you can watch in a 5 minute video. I don't mind either end creeping down if they do it slowly because like I said....old tractors do that. But I do expect them to stay up for an hour or so when I'm doing chores.

You have that knob that will lock the 3pt hitch. Is it working?? It should hold up just about indefinitely when the knob is closed. If not, its probably the 3pt cylinder/piston/rings. Easy to fix on a Yanmar.

On the other hand it it is the FEL And if you need the front bucket to stay up - and the cylinders are rebuilt good as you say - then I would guess you could just put a similar on/off valve in the loader hydraulic line. I've never actually done that, but it ought to work.

What one usually does if the FEL loader still drops after a cylinder rebuild is to replace the loaders directional valve block complete. Surplus Hydraulics has them for a few hundred bucks.
rScotty

I have never seen one of these YM's in person stay up for hours. 5 to 10 mins. Not hours. .....well a guy down the road from my farm had a 2210 I think it was and that would stay up forever, but that's the only one thinking out loud.

 

[careyo63]

The knob is CK-4130 not 4150 The Receipt I looked at is 10yrs. old and then my R hand doesn't type very well either so I may have hit the wrong number. Sorry about that!
But here is the lock side and you can see I have mine turned so that at the lower side goes all the way down. I can loosen it and put it back on track but then I have at least 1/2" if not more before stopping it at the lowest possible. The Wire is just preventing it from unscrewing and loosing the knob. Again! I had a problem when I first bought the Ym2000 and ordered then correct setup. Been fine every since. When you have the handle as far as it will go down then go set the 3 point control valve. The adjustment on the side of the Control Valve with the set pin Adj. pointing straight up to start, Neutral. Mine stays in that Pos. now and no problems....

 

[rScotty]

I have never seen one of these YM's in person stay up for hours. 5 to 10 mins. Not hours. .....well a guy down the road from my farm had a 2210 I think it was and that would stay up forever, but that's the only one thinking out loud.

That's not my experience at all. FEL buckets may drift, but 3point hydraulics do have to stay where you put them for hours or longer. And it is good that most do, because otherwise none of us could pull a mower or a implement without constantly having to fiddle with the position of the lift. Imagine trying to plow a field with a plow that kept diving. Ugly.....
rScotty

 

[California]

....3point hydraulics do have to stay where you put them for hours or longer. And it is good that most do, because otherwise none of us could pull a mower or a implement without constantly having to fiddle with the position of the lift.

The feedback lever that senses the position of the 3-point arm, is linked to provide more hydraulic pressure as the implement falls. I think this automatic sensing and feedback is what maintains a plow etc at constant level.

 

[Rail9222]

I'll be messing with it today to see if I can make some adjustments on the 3 point. I brought it in the shop yesterday and noticed hydraulic oil dripping from one of the 3 point lift arms. Look like it will need some attention.
This is a rescue tractor that I paid $500.00 for so I don't mind the repairs. I replaced the front tires and rear wheels and tires.
It came with the loader but no bucket. I found a destroyed Kubota bucket for $60.00 and spent a weekend hammering and welding to make it work.
It needs new hydraulic lines for the loader which will be coming soon.
My goal is to make as reliable as possible.

Thanks for all the input.

 

[clemsonfor]

That's not my experience at all. FEL buckets may drift, but 3point hydraulics do have to stay where you put them for hours or longer. And it is good that most do, because otherwise none of us could pull a mower or a implement without constantly having to fiddle with the position of the lift. Imagine trying to plow a field with a plow that kept diving. Ugly.....
rScotty

When the tractor is on and the position lever is in place they all will stay put. I'm talking when the tractor is cut off. When running the feedback mechanism knows where it should be and keeps it there by adding fluid if it starts to let down a bit.

 

[clemsonfor]

I'll be messing with it today to see if I can make some adjustments on the 3 point. I brought it in the shop yesterday and noticed hydraulic oil dripping from one of the 3 point lift arms. Look like it will need some attention.
This is a rescue tractor that I paid $500.00 for so I don't mind the repairs. I replaced the front tires and rear wheels and tires.
It came with the loader but no bucket. I found a destroyed Kubota bucket for $60.00 and spent a weekend hammering and welding to make it work.
It needs new hydraulic lines for the loader which will be coming soon.
My goal is to make as reliable as possible.

Thanks for all the input.

Get those o rings from Hoye. The Japanese spec and impossible to find local. But anyway pull the bolt off the arm slide the arm off the spkined shaft. Take the oring out that's behind it, new one in there and out it back togeather. It takes about 5 mins per side and the o rings are like $2 each. Mine leaked when tractor was hot, now it hasn't leaked a drop since I out new o rings in .

 

[Rail9222]

So I went to remove the right lift arm and the bolt was loose. There was side to side slop in the arms. I pulled off the arm and inspected the o-ring. it looked good so I put it back together. I'll keep an eye on it but it looks to be good.

I lifted the 3 point with the box blade then shut the tractor off. It took 10 minutes for it to drop to the ground. Pretty sure I can live with this.

As far as the loader creep I'm convinced it is an issue with the 3 point valve itself. I may have to live with this as well.