A little information first, I'm helping a buddy out on his farm maintaining the equipment. I'm completely green (no pun intended) to farm tractors and am having to do some minor work on an older model 5410 (540?) with the hydraulics.
I'm also not terribly familiar with hydraulics, but I am an electromechanical engineering tech and have tons of experience working on many many other machines.
That being said I'm trying to learn about this tractor and how it works, and whether or not someone has hooked up a third SCV incorrectly......but as I'm new I'm probably going to end up using a lot of wrong terms or confusing things so I apologize ahead of time.
So first of all, picture number 1, These levers both make the (rockshaft?) move up and down but I don't understand the correlation between them and how they work together.
Picture number 2, What is this little pedal for? I can't seem to figure out what it does.
Picture 3 and 4. The previous owner had removed this (SCV?) from a 5500 model tractor and attached it to this 5410 and said he "hooked it up exactly like it was on the other tractor"
Unfortunately I forgot to mark down what was connected where to that hydraulic distribution block (whats this thing called?) but the top middle and bottom connectors are marked R T P on the plate they're mounted to.
If I'm not mistaken R (top) is hooked up to the middle port on the block. T (middle) is connected to the front most port, and P (bottom) is connected to the rear port.
Here's where things start to really not make sense for me. I'll do my best to explain.
We have a Wallenstein GX900 Excavator we're trying to hookup to the back of this tractor. I connect it's two hydraulic lines to T and P since that's where they fit.
In order for the excavator to work I have to move the bigger lever in picture number 1 to at least position 3, then the excavator will work and move etc.....but then the front bucket does not work. In order to make the front bucket work someone needs to hold the lever back to raise it, and a second person has to activate the boom on the rear excavator, then the front bucket will lift.
So I can only assume that someone has hooked up the 3rd SCV incorrectly. Also it has 3 connectors instead of two, the the top one (R) connected to a hose that isn't hooked up to anything.
Can anybody help me make sense of this? I'd like to understand how this all works and I'm guessing that the front bucket should still be able to operate independently of the rear excavator and the operation of one shouldn't affect the other?
The dipstick says the gearbox is full of fluid so it isn't withdrawing too much even with everything extended.
The last pictures are identifiers.