Iseki 35

freedomlives · Mar 22, 2018

Here is where the hydraulic system is tapped in to:

This is the set of controls-- the far right hose is what connects to the pump output, and the far left hose continues on to the rest of the tractor's hydraulics:

Two angles on the hydraulic "thing" attached to the steering "thing" with the hydraulic lines going in to the steering:

I wonder if the screw sticking out on the right would adjust the tightness of the steering gear. The manual for the TS3510 shows something like that to be adjusted.

Lines going in to and out of the transmission:

For completeness, the hydraulic pump:

freedomlives · Mar 22, 2018

Other interesting thing-- on the front axle there is a stamp T50F - 000167. So the serial number there matches with the serial number on the ROPS. Interestingly, the photo label of the tractor in Thailand has T50F on one line.

Google searching "Iseki SF" turns up a lot of photos of lawnmowers for me as well. But on the other hand, the google translate app translates the top line of the sticker on mine as "full frame tractor", so maybe there was an extremely obscure series of SF138 tractors? It sure would be great if there were someone Japanese speaking, even better native, on the forum who could be our "spy" in to that world.

Kernopelli · Mar 22, 2018

freedomlives said:
The bucket being full didn't matter, but it was by then in somewhat thick mud when I noticed, since it was by then that I was making tight maneuvers where I needed to turn the wheels hard, ideally before moving.

There is also what seems like to me a lot of play in the steering. With the wheels pointed straight ahead, I turn the steering wheel to either side at least 20ｰ before any steering happens, which seems excessive.

There is some sort of box on the steering mechanism with hydraulic lines going to it, and then two of those go in to the steering mechanism. That's why I'm sure it has power steering.

I just went out and checked. The line going out from the hydraulic pump has been opened, and now the hydraulic fluid first goes up to the controls for the FEL before returning to the circuit where it continues in to the transmission (for controlling the 3pt). Separate lines go to and return from the transmission housing for the power steering.

Is this really a good arrangement? When I've seen threads of people adding FELs to their tractors on here, I see them putting Ts in to the hydraulic lines so the FEL is in "parallel", not putting it in "series" (can these terms from electrical engineering be applie to hydraulics?).

Some other things need to be checked to-- I was surprised to learn that the diesel pump has two places that need engine oil poured in to them. In my car the diesel injection pump is lubricated by the diesel fuel, so this surprised me.

It's interesting that your steering only steers hard when stopped, even with an empty bucket ( not much load on the steering) but works fine while moving with a full bucket ( much bigger load on steering). Hmmm, I gotta think more about that.

I don't know the first thing when it comes to your steering system but in past experience when I had a similar issue with "slop" (play) in the steering, it was due to worn bearings or bushings on the steering column shaft. I am certain it could be a number of other things too.....just cant speculate on that.

The system of plumbing sounds correct, this is how my FEL is plumbed. In general, you don't want to tee the pressure line from the pump, this can rob another function in the circuit.

There are a number of different injector pumps/ types and some have oil lubrication. Good catch on your behalf BTW.

Don't know if this will help you but I find parts diagrams invaluable. Iseki made a lot of Massey Ferguson's compact models. Sometimes searching the MF models can reveal a lot of crossover to Iseki models. I have used AGCO Parts Books or ( AGCO Parts Books enter site as "Guest") many times to figure out Iseki models. I would suspect if there is a "similar" MF model, it would be in the 30-40 HP 11XX or 12XX compact series.

freedomlives · Mar 22, 2018

Glad to hear that its normal for FEL to be plumbed in that. I need to learn about hydraulics.

I'm a bit irked by the paintjob on the tractor actually. There are several small informational labels on hydraulic components that got painted over, as well as one on the frame that I presume has more model number information. Maybe a heatgun will lift the paint. I was looking at some various paint strippers in the store today as well.

I guess this will force me to finally get proxy stuff set up for myself. The AGCO site doesn't allow guest access for people connecting from a european IP, and it doesn't function correctly using one of the free online proxies...

Another thing I found out today from the seller is what types of fluids the importer puts in-- ISO 46 hydraulic fluid and 15w40 engine oil. Neither of which fits with the recommendations in the TSxx10 series manual. How do you swap out hydraulic oils? Do you just drain the main reservoir and let what ever is in the lines mix with the new stuff?

freedomlives · Mar 22, 2018

I've just watched this video, which explains what is Power Beyond: How to Use the Power Beyond Facility in a Hydraulic Directional Control Valve (with improved audio) - YouTube

Looking at that, I get the impression that there should be a third connection on the bank of spool valves leading to the tank.

At least the FEL valves, being newly added, have the label with part number from a European manufacturer, so i can figure out how they're supposed to work.

Kernopelli · Mar 22, 2018

Concerning AGCO, have you tried going through Massey Ferguson UK Massey Ferguson and navigating to "Parts"? When I do it, it directs me to the North America guest parts look up....maybe it will allow you access that way?

I do have a return to tank line on mine. So your valve only has a pressure supply into the valve and a line running from the power beyond to the pressure pressure line running to the 3 point?

freedomlives · Mar 23, 2018

It doesn't work for me that way. I just set up a tunnel to a US server, so I'm in the parts catalog. The White 2-35 is the closest match for sure, at least with the power steering gear. The screw I thought might be for adjusting it is precisely that on the parts list.

Yes-- just pressure in to the valve and a line running out to the power steering flow divider. I'm not sure if the outlet port on the valve block is Power Beyond or just Tank. When I get home (at a restaurant having coffee and working on my laptop while my son has piano practice in town), I'll look up the part number on the valve.

What do you think of the hydraulic fluid? It seems like running heavier weight fluid than specified could cause problems as well, no?

freedomlives · Mar 24, 2018

Looked over the tractor again last night, particularly those labels that had been painted over. I noticed that the one on which I could see stamped numbers (so had to be metal) had loose, paper like edges. Or, in other words, masking tape. I guess it was Friday afternoon and whoever was charged with uncovering the stickers after spraying the body missed this one.

So according to the label on the frame of the tractor, next to the front axle, it is an "agricultural tractor (passenger type)".
Agricultural machine model name: T0014
Sales model name: TS35F
Vehicle model name: T50F

Why the label on the ROPS gives the model SF138 will perhaps remain a mystery.

thepumpguysc · Mar 24, 2018

You had better snap a pic of the injection pump & post it..
cuz if the fuel system doesn't have any oil in it.. the power steering wont matter much. if ya know what I mean..