Imt 560 loader issues

[Jwells1993]

Hey guys new to the site, I’ve been having an issue ever since I got the tractor my up control barely works on the loader unless I rev the hell out of it. In the process I’ve changed loader control, replumbed the loader (hoses were junk), new auxiliary pump, and I still have the same issue t bucket tilt and down work good, just lift barely works I was wondering if there was like “blow by” in the lift cylinders but I think cylinders are good and tight because I can leave the loader bucket in the air and it doesn’t droop down. I don’t know what to try next and Im not sure who to ask, but here’s the gem I’m working with imt 560 I have a vevor open loader controller on it, it’s auxiliary pump feeds the loader

 

[used red MN]

Hello Jewell welcome to YT! First off let me say I have zero experience with an IMT tractor. I see they are Siberian built Massey Ferguson design tractors. To clarify when you say ”auxiliary” pump to me that means a pump driven by the PTO or off the front of the engine (which I don’t see) Can you clarify what you mean by “auxiliary”? Also your description sort of leads me to think that the “auxiliary pump” would have an oil reservoir separate from the tractor. I can’t see exactly what is going on with those connections in the first photo, but I interpret them as going into the tractors main housing somewhere. That does not seem to fit into what I described above. I would also say your cylinders seem to be performing okay if they hold the loader in the raised position, although occasionally that is not a 100 percent guarantee.

 

[BarnyardEngineering]

Ideally you would get the hydraulic system pressure tested and flow rated. Pressure can be tested with a simple gauge, a quick connect to fit your outlets, and adapters to make the two fit together. The tool to test for flow rate is thousands of dollars, more than the entire tractor is worth so it's something you'd pay a mobile mechanic to come and do for you.

According to tractordata, the stock hydraulics on that tractor are only 4.8GPM, so your loader is going to be SLOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOW. Even the optional 7.9GPM hydraulics would be SLOOOOOOOOOOOOOOOOOOOOW. There may be nothing at all wrong with your tractor, and that's just the way it is.

 

[caterpillar guy]

I would say it is the small pump. Our loader is a 574 IH and the 12GPM pump has 3 GPM prioritized for the steering and such so only about 9 GPM to lift with and it is slow will of course lift faster if opened up some on the throttle but still slow. This is all going off Barnyards information. Now if you have a PTO driven pump with more capability then it might be a problem with that portion of the system. Yours looks like it is plumbed into the tractor system though. So unless you can increase the size of the pump in the system which I doubt you can it will be slow. Newer loader tractors have bigger pumps in some of them helping the lift speed. Ideally you want about 20GPM or more for loader work to be well balanced.

 

[bob p mn]

I had a similar thing happen to me I mounted a schwartz loader on a 4000 Ford and the loader arms went up & down terrible slow, the bucket worked fine. I had bought a bunch of swivel adapters for hooking hoses to the cylinders and it turns out one of the fittings was a restricted flow fitting, spent alot of time trying to find the problem and when I finally found it that fitting only had avery small hole for the oil to flow through. The restricted fitting was put in the wrong package, those are the kind of things that really throw you for a loop. Not saying that's your problem but I do see a lot of new fittings on your valve, just something to check.

 

[m16ty]

I wouldn’t rule out the lift cylinders bypassing. You can have bad piston seals and if everything else is good the loader still won’t drop. This is due the the area the rod takes up within the cylinder.

 

[Jwells1993]

Imt had an option of an auxiliary pump that runs off the main pump that feeds a set of rear remotes I did away with the rear remotes and feed my loader with that

 

[used red MN]

I wouldn’t rule out the lift cylinders bypassing. You can have bad piston seals and if everything else is good the loader still won’t drop. This is due the the area the rod takes up within the cylinder.

Good point, to check if that is what is happening raise the loader off the ground to any point where it seems to have difficulty raising. You can shut of the engine for this next part if you want to. Loosen the hose fitting going to the rear port (retract side) on the cylinder. If that allows the loader to drop then the piston seals have some leak by. When doing that just beware of the possibility of highly pressurized fluid in the connection, don’t let it spray directly at your skin of face.