3-Point Hitch Iseki 3 point & PTO

[BenPerth]

Hi

I have an Iseki TL2500F that I bought a few months ago and its not quite right. Just wondering if anyone can point me in the right direction.

When we bought it, everything worked at the dealer, I checked the FEL, 3PH and PTO as well as just driving it around to check steering, brakes and all that.

I had an overheating problem a few days later, this was fixed with flushing out the radiator. About a month after that the 3PH decided to go to the top and stay there. No amount of pulling levers or name calling was bringing it down. It would take about a week for it to leak back down again and as soon as you started up again the arms would raise to the top and defiantly stay there. Not long after that I couldn't get the FEL to do anything. You could push and pull on the levers all you wanted, it didn't care.

At the time I didn't know anything about hydraulics so I got someone out for a look and he found the filter was clogged up with a silicone like goo. He gave it a wipe and then ran it for about 30 seconds and I had amazing power in the FEL. I took the filter to work (truck dealership) and the workshop manager attacked it with the parts washer until it was like new.

About a week later it was full of this stuff again so I cleaned the filter again, then about a week after that, full again. I cleaned it and put it back in, but now it seems fine.

I wasn't happy with the idea of having who knows what pumping around the hydraulic system so I drained the oil and replaced it with "Castrol Agri MP Plus" which was recommended by a few places.

I then ventured under the seat and found the connections for the 3ph raise/lower lever on the steering column and the raise lower lever beside the seat were all messed up and with a bit of poking, prodding and WD-40 I managed to get the 3PH moving again.

It moves freely up and down to any position, but quite slowly. Lifting the revs up doesn't seem to make a different. It won't lift any weight though. It will however hold the weight. I attached a grader blade, set the lever to about the middle and then lifted the blade by hand. After resting my back, I could drive around over bumps and operate the FEL and the blade just stayed there. I could lower it, but raising it still required me to do the lifting.

I have removed the descent rate valve and checked that out, but that looks ok.

I also seem to have a problem with getting the PTO to spin. I have tried all the options with the H pattern. When i turn the switch on the dash, i get a red flashing PTO indicator but it still doesn't turn.

I'm no hydraulics expert but by reading things on here and harassing the mechanics at work I'm learning quite a bit. I'm guessing the following, can someone please let me know if I'm on the right track?

-Pump is ok because the FEL works great.
-Filter is ok because once I clean it, the FEL works great.
-As the filter isn't clogging up any more and I have changed the fuild, I probably have all of that goo out of it.
-Seals on the 3PH lift are ok because it holds weight

As the lifting is slow withoug weight and not happing with weight, I'm guessing now that its a problem with getting enough pressure to the back of the tractor. I'm guessing this could be:

-Blocked hydraulic lines from the FEL joystick to the back of the tractor.
-A relief valve that's stuck and letting all my pressure return to the tank.
-Something else?

All in all, I love my little Iseki, it certainly has other issues that need investigating (like where did the 4WD go?). It works really well, always starts and uses very little fuel. I give it lots of work to do and it never seems to run out of power to lift, push or dig at something.

If anyone could help me, that would be great.

Thanks

-Ben

 

[DennisArrow]

Can you please list just the problems please......I have a tl 2300 and are pretty much the same animal......God bless......Dennis

 

[moored4]

I know nothing about your machine and as DennisArrow said list your problems and The TBNer's Will try to help you out! I would start by changing out all the filters and fluids and cleaning all screens. Also try to find a manual for your machine!

:welcome: to TBN! :thumbsup:

Happy :tractor: ing!

 

[BenPerth]

Hi Dennis, thanks for your help.

The problem is that the 3PH won't lift but it will hold the weight of an implement if I set the height and then lift the implement myself.

I'm sorry if my post is a bit long, however I have done a fair bit of testing on it which I have documented above.

-Ben

 

[NHmitch]

I found a similar issue that someone was having on a different forum, see below. It kind of sounds like the oil may not be routed correctly from the loader to the 3 point lift, or you could have air bubbles in the system that are causing the problem, you may have to bleed the system. Just a thought. I also found a great article that may help on this. Try looking at the yanmar link below. This is from the Hoyetractor page:

"Three Point is Down & Won't Go Up At All.
The first thing to check if you have a loader on the tractor is if the loader is still working. This will rule out a pump problem. If the loader is working you can move on to the next paragraph. If the loader is NOT working then there is something wrong with the pump (normally caused by unhooking the hoses while the tractor is running which dead-heads the pump) or a problem with the oil supply (out of oil, dirty filter or screen?). You may need to remove the pump & inspect it for damage if the oil is full & the filters are clean.

If you don't have a loader or the loader is working and you have a clean filter & plenty of oil- the next place to check is the linkage going to the valve. Be sure that a rod or pin has not fallen out and that the lever actually moves all the way to the valve. If all of this is ok then you might need to do some more in depth troubleshooting. You could have a bad three point control valve."

That one sounds like your problem:

Yanmar Tractor Parts, Sales, Service, and Delivery.

http://www.tractorforum.com/f181/tractor-problem-20139/

 

[DennisArrow]

Ben.......my tl2300 should be very similar to your tl2500....they share the same parts book........mine though does not have a light on the dash to indicate that the PTO is engaged..........

The 3ph does have a lever next to the seat with a guage that goes from I think 0 to 10. All the way up lifts the 3ph perhaps 18 inches or so from all the way down.........

On the dash right hand side is a small lever that putting it up raises the 3ph all the way up; but when one puts this lever down it goes to the setting of the lever next to the seat. I use this for instance when I have a rear blade on and am grading my road. I set the depth of the blade with the lever next to the seat and the lever on the dash all the way down. Next, I grade a bit; but lets say I come to a low spot in the road, so I raise the blade with the lever on the dash so that I dont change my grade setting, back up or forward to pick up more material, then I lower the blade with the dash lever and plow that material forward into the low spot. /.......Hope you follow that..........

In addition, I have a set of switches on the fender that raise and lower one of the 3ph arms so I can use that to set the depth of my blade on one side or level it. In addition another switch allows the blade to "float"..............

The 3ph arms are directly connected to the trans/rear end housing no hoses or anything power them as in the above post indicates.........My FEL is fed by hoses.........

Do you have a knob directly under your seat between your legs, that controls how much the 3ph recieves power???????...........in other words if I tighten this knob all the way in, the 3ph doesnt move, as you describe. If I barely open it, it is very slow; but if I open it all the way the 3ph speeds up as it goes up and down........Maybe this is your problem??????.......just thoughts Bud...........God bless........Dennis

 

[Marcle]

Do you have a knob directly under your seat between your legs, that controls how much the 3ph recieves power???????...........in other words if I tighten this knob all the way in, the 3ph doesnt move, as you describe. If I barely open it, it is very slow; but if I open it all the way the 3ph speeds up as it goes up and down........Maybe this is your problem??????.......just thoughts Bud...........God bless........Dennis

Mines a different machine, however would the control under the seat also control the hydraulics to the front end loader?

 

[Dave Colantuoni]

Marcle,
You have the "Knob" under the seat.
It cuts off the hydrolics to the 3pt and send it to the FEL
It should be all on or all off,
If it part way you'll be slow but both will work.
see attache markup of your pix.

BTW: You should clean the input pickup screen
it were the hard line goe into the side of the transmision.

 

[Marcle]

Marcle,
You have the "Knob" under the seat.
It cuts off the hydrolics to the 3pt and send it to the FEL
It should be all on or all off,
If it part way you'll be slow but both will work.
see attache markup of your pix.

BTW: You should clean the input pickup screen
it were the hard line goe into the side of the transmision.

View attachment 270363

Hi Dave,

The knob you've labelled is for a hydraulic take off on the back of the tractor, in my case not connected. I've arrowed a flow control valve knob (A) which controls the rate at which the 3 point link arm raise and lower. B and C are the hydraulic hoses which go to the front end loader. D is the non user pressure relief valve. Before I change any settings I'm going to fit a pressure gauge to check what the pressures are.

 

[Dave Colantuoni]

I haven't figure it all out,
I get a headack every time I look at it.
Mine is the same as yours
but has an Aux port quick connect ,that I've never used.

You should have 3 hoses going to/from the FEL control valve.
1 high presure input
1 low presure return
1 high pressure return conected to down stream devices.

Not sure what that relief valve control.
It look like it for the 3pt only.


I haven't played with any of the knop becaue mine wirk fine as is.
But my 3pt doesn't gou up or down. Not an issue becaue backhoe make it useless.
I beleve the Knob I show would have to be turned to allow fluid to get to 3pt.
But it's may be as you said for the Aux port.
I don't think the little Tee handle (3pt lower speed) has anything to do with
the FEL.


Hard to tell what OEM and after market for the FEL
would be nice to have a barebones Tractor next to mine.


Dave