1/2 Remote on Kama 554

[3RRL]

I recently got a hydraulic dump trailer that has a single acting hydraulic cylinder on it. My Kama 554 has a 1/2 remote on it and supposedly, that is to run a single acting cylinder. Past research led to a couple possible answers, but I wanted to run it by the experts to confirm before I start to use it.

I took these photos a while ago when I had the top of the hydraulic box off. In the first photo, I asked what the elbow and adjusting screw on the left side of the hydraulic box are for.



Then later, after some information was returned, I found that elbow is the 1/2 remote on my Kama 554.
Here are a couple of good pictures.

 

[3RRL]

I was still not sure what that adjusting screw was for until Larry (gugliols) replied that he had the same question. He has a Jinma 354 with the same 1/2 remote and mystery adjusting screw like mine. This is what he told me:

Rob,

That "remote" capped off output on the left center of the TPH box is whats called a 1/2 remote. It can be used for a single acting cylinder (one hose going to the cylinder). So you only get power in one direction and gravity return. It can be used on a simple dump trailer cylinder. It cannot be used for double acting cylinders. Fluid is pumped out that one remote when you lift the TPH lever then returns back though the exact same port by gravity when you lower the THP lever.

Trouble is, in order to get that 1/2 remote to work you loose the function of the TPH arms. Unless you have a single acting cylinder dump trailer - that "remote" is pretty much worthless.

The "Mystery" bolt on the left MAY be what we turn to activate it ?


Then he got his manual out and read that the adjusting screw was to engage the 1/2 remote.

Rob,

Ok just read the Chinenglish operators "manual".
My version:
...the "mystery" Bolt is indeed what activates the 1/2 remote.
Screw it in (CW) will allow the TPH position lever to control fluid in & out that capped off 1/2 remote output. Screw it out (CCW) to restore normal TPH operation.

If we were to screw that bolt in with the 1/2 remote capped off, then raise the TPH lever we might just "dead head" the pump and blow it up.

So you un-cap the 1/2 remote elbow and turn the adjusting bolt clockwise to use the 1/2 remote. Then you can use the 3pt raise and lower lever to run the 1/2 remote. Turning the bolt back counter clockwise would again activate the 3pt raise and lower. But don't cap it off without screwing the adjustment counter clockwise and pull the 3pt levers, or it might deadhead the pump.

Well, I was not planning on using mine before, but now I want to.

My questions are:
1) Is there no relief valve for the 1/2 remote in case we forget to turn the adjusting screw counter clockwise?
2) Can I put a quick disconnect on the end of that elbow and leave it on?
3) Has anybody actually used this feature?
4) Can you tell me how far to turn the adjusting screw in (clockwise) to make it work. Does it go to a stop or something?
5) Then how far out (counter clockwise) to make the 3pt work again? If I unscrew it too far, will it fall out?

Thanks in advance,

 

[bluechip]

Hi Rob.
You have it. the bolt looking valve diverst the oil from the lift cylinder to the "half remote"
to answer your quesitons:
1: There is a releif valve built into the lift control valve.
2: Yes, a quick connect will work OK there. Jinma often puts one on thier tractors.
3: I talked to a customer who has his laoder plumbed there (not best idea because you cannot use the 3 point and loader at same time)
4: turn in till snug (not tight) to divert to the port. loosen until 3 point works properly. Half in between will allow the 3 point and the lift arms to work together (the oil will take course of least resistance).
5: There should be a cotter pin in the "bolt" to keep it from backing out too far, but it can be forced.

I'm 90 percent sure what i am writing is accurate, its been a while since I messed with one of these.

 

[3RRL]

Chip,
I sure appreciate the quick reply.
I guess Larry and I figured it out, but lol ... I was not certain never having used that thing in the 2-1/2 years I've had the tractor now.

Oh, do you happen to know what the threads are on that elbow?
1/2 NPT I hope?
Thanks!

 

[RonMar]

The Jinma 200 series I have uses the 3PH speed reg valve down in front of the seat to force fluid exclusively to the 1/2 remote QC. Closing the speed reg valve fully clockwise won't let fluid go to the 3PH cylinder. If it is open, fluid will go both places if something is connected to that QC. As chip mentioned, the fluid will take the path of least resistance. That is the port I use for my "maintenance" filter to supply system flow to a 10 micron filter. When it is connected, if I don't close the speed reg valve, the 3PH arms will sink to their lowest position. If you try and lift a dump bed without the valve closed, the lift arms will raise and kick the 3PH control valve back into neutral and stop the flow

If my chinglish translation is correct, it also states this port is for a towed dump bed. I had thought of using it for a stump puller idea I had a while back, but I got a backhoe instead. Much cooler

 

[bluechip]

Chip,
Oh, do you happen to know what the threads are on that elbow?
1/2 NPT I hope?
Thanks!

I have never used that port so not sure but I don't think it will be 1/2NPT... probably strait metric with O ring face seal. I'll take a look back in the shop and see if we have a suitable adaptor, but can't promise anything.

 

[sjb]

On my Kama 254 that fitting is a 22mm x 1.5 metric o-ring face seal. I don't know if your 554 is the same.

I made my own adapter, by turning the NPT side on a lathe and welding it to a 22mm nut. ( My lathe can't cut metric threads). It's ugly but it doesn't leak.

I use the remote to lift a snow plow.


Stan

 

[bluechip]

I do have an adapter from 22mm straight to 1/2 NPT, we had several made up when we were active with the KAMA tractors, used to change the odd size quick connects they used to standard Pioneer fittings... should work on the half remote. only problem is the bottom of the bore is not flat for use with O ring so some other way of sealing may have to be used, although we had little problem on the conversions we did.

 

[3RRL]

I do have an adapter from 22mm straight to 1/2 NPT, we had several made up when we were active with the KAMA tractors, used to change the odd size quick connects they used to standard Pioneer fittings... should work on the half remote. only problem is the bottom of the bore is not flat for use with O ring so some other way of sealing may have to be used, although we had little problem on the conversions we did.

I think I bought several of those from you a couple years ago when I used the rear remote valve and Chinese hoses to run my hydraulic side links. I know those hose ends were 22mm x 1.5 and I should have a couple spares. I'll see if they fit that 1/2 remote then.
Thanks...