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@ DavidPrivett – The fluid getting hot is a somewhat solved problem, but intimately linked to the super short 3ph travel. Either there is no upper stop, or a mechanical stop fell off, so the fluid was only getting hot if I had the lever ALL the way up. It was continuing to try to push the 3ph up constantly, so the pressures got wonky, and it got hot. At least that seems to be the observation. Setting the 3ph lever down just a hair until it was enough to take the pressure off was enough to alleviate the hot lines, and funky joystick function. It kinda blew my mind, but things have not overheated in 2 days as long as I make sure to check that placement.
I am not sure where the draft comes in, but I moved a little gravel today, and set the 3ph from 97%(ish) to around 80%ish.. As I was traveling to the pile and back, I heard the clanking of my 3p arms dragging on the ground. Decided to try adjusting them upward tomorrow as I was driving home.
@ Bob Rooks I did get the D3 going today. All she needed to get started was a new battery. ($200.. ouch) But her alternator seems dead. No additional voltage when its running. Back to Napa tomorrow it seems.
I think there is a draft control for the three-point on the 454. That could be part of the problem.
It definitely has draft control on there. If there is any adjustment to the draft on the backside, it is very possible it was never set correctly, or I have altered it when loosening and removing the draft to access the triangular Hyd PTO port underneath when installing and removing a JM-03 backhoe attachment.
From what I have read.. the bottom 50% of the 3PH lever throw should be the draft control, with the top 50 being positional. It only moved the arms yesterday at the very tip top of the throw, and since I bought it, has maybe had a max positional throw of 5-10%, leaning closer to 5.@ DavidPrivett: I am pretty sure it is a single pump, single sump at the rear. I too, have never messed with the knob before, and after a look (w/o a magnifier) yesterday, pretty sure I may have to dig through paint to even find the set screw for it.
The 3PH lift is controlled by a single lever, and from what I have read, the bottom 50% of its travel should be the draft control, with the top 50% being the positional control. With no load yesterday, only the very tip top (~1-2%ish) affected the position I am going to add an implement today, and see if those ranges change any with weight.
I probably do still have Ron’s instructions. Although they are likely buried in storage along with the chinese manuals from that time. I did not get the D3 going yet, its battery and the alternator for the Jinma are in the truck, all prepped for a visit to Napa in the morning.
So here’s the funny thing… while looking around, I gave things a try per this video.(& the solution found in its comments.)
Apparently the loader valve seems to be ok, The kicker is actually the 3pt control being out of adjustment. The lever was all the way up, and apparently constantly trying to push the 3pt through the frame. Lowering the lever took all the load and heat off the Hyd system, and the loader control functioned properly.
Now for the new rub. My 3pt control has never been “right”. Currently, I would say about 98% of the throw does nothing at all. The last 1-2% takes it from bottomed to all the way up.
I just purchased a stump grinder that will require much finer adjustment than all the way up, or all the way down, soCan anyone point me toward the procedure to adjust the 3pt travel per lever distance?
I have not yet tried the flow adjustment under the front seat, tho from what I have read about its function so far, I am not hopeful that is the solution. (But damn hopeful to hear that it might be)
The control valve looks pretty similar, at least to my untrained eye.
It was getting dark when I finally got finished talking to the logger, so I'll have to get those tank dimensions on another run.
Is it possible for the hoe to move if the lines on the hyd pump were backwards? I can't say I have the utmost confidence in the assembler. Otherwise, my only guess would be the swivel connection on the back of the pump.
It all comes out of the fill cap. The cap has holes out the sides, it can manage everything from dribbling out to a pretty good arc.
The current pump is what it came with out of the crate I assume. I am looking at swapping it out for a PTO shaft driven one.. so it can be used on non Jinmas.
My tank is quite a bit different than the one pictured above. I'll try to get measurments next time I am up there. But I do have an old pic from when I first bought it.
Is is possible that my 454 is too powerful for the JW-03? I think I ran across a seller who had JW-03's listed for 18-25hp, and JW-04's listed for 30-45's?
Rich, Thanks! that kinda blows the theory I had out the window. Good thing, I was rather avoiding the idea of taking that whole thing apart. I'm going to be heading up to the property tomorrow, and was planning to tinker and move things around a bit, I'll check between the sump n pump for anything loose.
RonJ, I think the last time I moved it around,(2+ yrs ago) it was probably everywhere from quite full, down to half full. It's effetively brand new, even though its several years old now. Never dug a single bucketful. I filled it from dry, and basically just moved all the cylinders around. Eventually it heated up and blew a ton of oil out. (if I recall corretly anyway). I think I assumed It was overfilled… so I let it cool, then did it all again. Pretty sure I dumped 3-5 gallons or more on the ground, got pretty frustrated, and parked it. Its not a small leak when it blows out, it dumps a large portion out and makes a helluva mess. Stuck it a ways down on the to do list
.I read a thread somewhere that was recommending keeping the level below the end of the tube for foaming issues… figured I might try it again tomorrow and see what happens
Jackpine, what was the problem that led to you tearing the valve body apart?
My JW03 foamed incessantly when I got it, eventually dumping all the fluid on the ground. I was guessing (or am afraid) it was a leak in the low pressure end.. probably those seals in the valve body you mentioned. I am wondering if you could verify what your problem was, as that's what I am planning on doing as a fix.
I haven't been in a hurry to fix it, as I have a Case 590 for hoe duties… the 03 just came with the 454 when I purchased the auction.
Or if anyone else is familiar with the foaming problem, would love to hear about it!
thanks!
