Front loader issues

[Timothylittle60]

Today I put a new hydraulic control valve on my loader. When I try to lift it up it only moves just a little. It will not lift front end off of ground. When I use my curling control, it works perfectly. It will lift front end up. Rear lift is working great also. Not sure if Im missing something. Any tips or info will be greatly appreciated.

 

[Matt in Oz]

Hi Tim

Some ideas. Is it a new or second hand hydraulic control unit? Are you pushing the lever all the way forward or rearward to get the movement then it stops? The fact that the crowd function works makes me think it has a float function. This means the lift rams will be open and just float along - no
hydraulic pressure. Try not pushing pulling the lever all the way forward or back - see if that works. As it starts to move hold the lever at that point and see if it keeps moving.

 

[Jim.ME]

Also. What tractor/model? What model loader? Separate front pump or tractor hydraulics supply the loader? What valve did you install?

 

[Destroked 450]

Are you sure you got all of the hoses plumbed correctly

 

[Timothylittle60]

Its a new control valve I installed. I dont think it has floating feature on this control valve. When I move the valve in any direction and hold it, it will not continue to move. All I get is a slight shrug. Its on a Ford 3600 and the hydraulics are coming from tractor.

 

[Timothylittle60]

forgot to mention, on my old control valve. Which where single spools the were hooked together, I could only get it to lift if I slightly pulled back on the curling valve at the same time. Not sure what model the loader is. I know its a Ford loader. It used to be a self contained unit once upon a time. I am considering putting a front mount pump back on it.

 

[Jim.ME]

(quoted from post at 05:57:13 04/25/21) forgot to mention, on my old control valve. Which where single spools the were hooked together, I could only get it to lift if I slightly pulled back on the curling valve at the same time. Not sure what model the loader is. I know its a Ford loader. It used to be a self contained unit once upon a time. I am considering putting a front mount pump back on it.

Single or double acting lift cylinders? If it is a new valve you brought, can you post the name and info related to it?

You should be able to post pictures, if not right now you can within a couple more posts. Go do to the TEST Forum and try making posts and adding pictures. When you can add a picture come back and post a couple picture of the loader, the two valves and how it is plumbed from the tractor.

 

[Timothylittle60]

this is my setup. I have actually tried a larger control valve. The only way I could get the large control valve to work was I made it closed center. With that setup, it wouldnt let it return to the tank and it put a high strain on the pump. I tried to use the relief valve so it would return to the tank. Unsuccessful! I read where you can have to big of a control valve so I decide to try this smaller one.

 

[Jim.ME]

(quoted from post at 17:28:19 04/25/21) this is my setup. I have actually tried a larger control valve. The only way I could get the large control valve to work was I made it closed center. With that setup, it wouldnt let it return to the tank and it put a high strain on the pump. I tried to use the relief valve so it would return to the tank. Unsuccessful! I read where you can have to big of a control valve so I decide to try this smaller one.

Keep trying on pictures. Total size of any picture, or total of several pictures, in a post can not exceed 7.5MB. They won't post if the size is too big.

In the meantime. Where did you get the new valve? Do you have the valve manufacturer's name and part number of the valve so folks can look up the specs on the valve you are using.