Jinma 554 rear hydraulics

[bigtruckmaker]

Brand new Jinma 554 with front end loader and rear axillary hydraulics.

My question is why does it have 2 female quick connects rather than 1 male and 1 female?

The other question is neither line seems to have pressure... Am I missing something here? Something to turn on the rear hydraulics?

Front end loader works fine - hydraulic level is good -

 

[3RRL]

Hi bigtruck and welcome.
My 554 Kama came just like that except it had 2 sets of rear remotes ... all female connections. Actually, that is Ok if your hydraulic implement(s) have males on them. I did switch mine to one male and one female per set. So I get the the same up or down hydraulic movement instead of sometimes getting them switched.

You say they don't work?
Are you using the correct lever to operate them? You should be able to see which valve the rear remote lines are going to. Then try that lever. I know on my wife's 284 Jinma, the levers are all right next to each other ... a bunch of them.

 

[bigtruckmaker]

Hi bigtruck and welcome.
My 554 Kama came just like that except it had 2 sets of rear remotes ... all female connections. Actually, that is Ok if your hydraulic implement(s) have males on them. I did switch mine to one male and one female per set. So I get the the same up or down hydraulic movement instead of sometimes getting them switched.

You say they don't work?
Are you using the correct lever to operate them? You should be able to see which valve the rear remote lines are going to. Then try that lever. I know on my wife's 284 Jinma, the levers are all right next to each other ... a bunch of them.

The rear remotes have a lever? The only lever is lift for the rear arms - does that need to be in certain position?

 

[doxford jim]

The rear remotes have a lever? The only lever is lift for the rear arms - does that need to be in certain position?

Hi,

Yes, the two rear remotes are on the RHS by the side and at the rear of the drivers seat. Just in front of the rear remotes there should be two levers - one for each set (i.e. two).
The long lever on the RHS that is immediately to the side if the driver seat is the lever for controlling the three point lift. Pull lever up, TPH lifts up - push lever down towards the platform and the TPH will lower.

That is how it works on my 2007, Jinma 554.

HTH

Jim

 

[3RRL]

The rear remotes have a lever? The only lever is lift for the rear arms - does that need to be in certain position?

Hmmm, I was thinking your rear remotes look something like the ones on my wife's 284 Jinma. They are on the inside of the right rear fender there. See the hoses coming from them? They go to a valve with a lever to operate them.

 

[3RRL]

If yours don't look like that, do yours come out of the hydraulic box with steel lines?
Maybe they look like some of these shown on Ronald's RanchHand Supply web site?
RanchHandSupply Lift Boxes
Click on those thumbnails to see if they're like yours.
Do you have any pictures of yours? A couple pictures would help a lot.

If they are like those, then they are 1/2 remotes which can power a single acting hydraulic cylinder such as used on a dump trailer or some log splitters. I think the way to activate them is to turn the knob under the seat shut or in (clockwise). I believe this is right, but I hope someone will verify it for you. Anyway, with the knob turned shut, the 3pt lift will not work now, but your 1/2 remotes will. (BTW, I have never done this myself) Then after using the 1/2 remotes, turn the knob under your seat back open to get the 3pt to work again.

If this is the case with yours, one other thing is not to put any load on the 3pt or raise it up full while the knob is turned shut to operate the 1/2 remotes. I've read where the 3pt can get stuck up there and the knob is really hard to turn back open unless you relieve the pressure on the 3pt by lifting it up manually first (to take the load off it). Maybe someone can elaborate on that too.

Hopefully you have a valve that operates your rear remotes that will operate a double acting cylinder.
Hey Jim, I see you posted. Maybe you could post a picture of yours?

 

[bigtruckmaker]

Mine has the full cab which makes locating a little more difficult.
Inside the cab

Right side
There is one lever to raise and lower the 3pt.
The FEL control
Throttle
High and low shifter
Foot throttle control

Left side
PTO speed lever
Pto engage lever
2wd and 4wd selector

Nothing under the seat inside the cab

The quick connects
One goes directly to the case the other one disapperas behind the case (difficult to tell for sure).

 

[greg_g]

I'm guessin' here - so bear with me. After looking at your photo, there's a chance you've got a latter-day variation of the dump trailer remote that Rob described.

Originally, some smaller Chinese tractors only had one remote fitting; hydraulic pressure provided lift, gravity forced return. It was controlled by the TPH lift lever too, but a hex head bolt on the side of the sump (connected to an internal valve) had to be turned to make it work. It would divert fluid from the lift arms to the remote fitting. Lift arm up, hydraulic pressure moved fluid out the remote. Lift arm down, gravity pushed fluid back into the sump. Only problem, this temporarily disables the TPH. It's one or the other, never both at the same time.

What you MAY have could be the same concept - except now with a dedicated return line. Look on the side of the sump for a hex head bolt that looks outa place from the rest. If your TPH works fine, that valve should be all the way in one direction. Turn it as far as it will go in the opposite direction (usually 1 turn or less) to divert flow to the remote(s). Turn it back to the original position to resume TPH operation.

//greg//

 

[bigtruckmaker]

I will check that this evening. I am assuming this would be located near the TPH control.

It is difficult to see where the one disconnect line goes - it appears to be heading towards the front of the tractor and not the rear case. I can see that it does go past the TPH control along the trans. But the floor of the cab blocks me from seeing exactly where it goes after that.

 

[3RRL]

What Greg said is what I was getting to.
From the looks of your photo with those hard lines, I think those are half remotes with a dump line. One line is pressurized and the other is for dump back to tank (I think). Some Chinese tractors have a hex to turn and some use a knob under the seat on the hydraulic box to activate those half remotes.

On my KAMA tractor, it is exactly like Greg said.
I took my tractor apart for you so you could see exactly what Greg was describing. (not really)



Shown here is what my 1/2 remote looks like capped off without the QD on it. And also the hex to activate the rear remote. Look for that on your hydraulic box. I'm still hoping Jim or Scott can post a photo of their 554 rear remote valves. I know they have true rear remotes, and they are different than your photo.
Come on guys...

 

[bigtruckmaker]

Still haven't found anything that made a difference.
I did find the speed adjustment for the hydraulics/
And one hex bolt that looked like it was it - but it just kept coming out but didn't divert the flow - I wasn't sure how far was too far - I thought the diverter bolt would not actually come out but rather just spin... Does it actually come out or should it just spin? I can keep turning it but didn't want to before asking if it should come out.....

 

[bigtruckmaker]

Here is a picture of the bolt in question

It is located towards the front

 

[bigtruckmaker]

Finally found it it - it was in another post - The trick was the 3ph lever position....

RonMar wrote:
From what I have gathered studying my system, rear hydraulics seem to have been a afterthought on the Jinma. The pressure supplied to that rear pressure quick connect is the same pressure supplied from the 3point hitch hydraulic control valve to the 3PH lift cylinder. The only difference is the pressure going/comming from the 3PH cylinder goes through the lowering speed regulating valve located in front of the seat. In order to apply pressure to that quick connect, you must have the 3PH control in the "Raise" position. To keep the 3PH cylinder from raising the arms at the same time and the control linkage that is attached to the right arm from bumping the 3ph control lever back to "neutral" when the arms reach the top, you must fully close the 3PH speed/rate control knob in front of the seat(turn fully clockwise, be sure and loosen the locking setscrew first). This will prevent fluid from being sent to the 3PH cylinder and the arms will not try and raise. With the control knob screwed closed, all the pressure/flow will be sent to that rear female quick connect fitting.