Dirt Moving Rear hydraulic remote .

[bryn67]

I have just purchased a new hydraulic top link and find when I use my box blade the ram moves in and out as it’s grading, even in soft soil. I own a Kioti DS 4510 . Thanks any help appreciated.

 

[ptsg]

You may be pushing the lever too far, causing the remote to go into float, which would make the ram move freely.

 

[bryn67]

You may be pushing the lever too far, causing the remote to go into float, which would make the ram move freely.

The lever has three positions.
Middle for the 3 point hitch and then up or down for the rear remote so the lever is always in the middle after setting the top link.

 

[ovrszd]

This is a common complaint. Both of my tractors do it. If I lengthen/shorten the top link an inch or two it will then hold it's position. Then later when I use it I have that problem again until I cycle it once.

I've read some very lengthy discussions about this here. The only plausible answer I've heard is this. If the return to tank line from your valve enters the tank above the fluid level, and with a load on the cylinder you open the valve to extend, it will actually extend faster than the valve flow can keep up with. This causes a vacuum and can suck air thru the return to tank line.

I'm not saying that's the answer. I'm just saying it's the only answer I've gotten that I couldn't refute.

Most will say your cylinder is bad. Or your valve is bad. I don't believe that both of my tractors have bad valves. I don't believe both of my top link cylinders are bad.

Anxious to hear other's opinions about this common problem although your thread title may not draw the right attention.

 

[ptsg]

I've read some very lengthy discussions about this here. The only plausible answer I've heard is this. If the return to tank line from your valve enters the tank above the fluid level, and with a load on the cylinder you open the valve to extend, it will actually extend faster than the valve flow can keep up with. This causes a vacuum and can suck air thru the return to tank line.

I do have this issue on my homemade backhoe. Specially when moving the boom down a bit to fast or even the stick. The return on the tank is way above the fluid, and it will suck air. Then I have to wait till the cylinder fills up again when moving back up.

Not sure if this the OP's issue either.

 

[/pine]

Add a double pilot check valve...

 

[ovrszd]

I do have this issue on my homemade backhoe. Specially when moving the boom down a bit to fast or even the stick. The return on the tank is way above the fluid, and it will suck air. Then I have to wait till the cylinder fills up again when moving back up.

Not sure if this the OP's issue either.

Yeah, me either. After I posted that I reread his first post and realized I didn't have enough information to know.

 

[ovrszd]

Add a double pilot check valve...

Yep, just realize you lose "float".

 

[bryn67]

This is a common complaint. Both of my tractors do it. If I lengthen/shorten the top link an inch or two it will then hold it's position. Then later when I use it I have that problem again until I cycle it once.

I've read some very lengthy discussions about this here. The only plausible answer I've heard is this. If the return to tank line from your valve enters the tank above the fluid level, and with a load on the cylinder you open the valve to extend, it will actually extend faster than the valve flow can keep up with. This causes a vacuum and can suck air thru the return to tank line.

I'm not saying that's the answer. I'm just saying it's the only answer I've gotten that I couldn't refute.

Most will say your cylinder is bad. Or your valve is bad. I don't believe that both of my tractors have bad valves. I don't believe both of my top link cylinders are bad.

Anxious to hear other's opinions about this common problem although your thread title may not draw the right attention.

I only used mine for a short time before reverting back to the screw type top link so will top up my hydraulic level a bit even though it shows well up on the dip stick and see if it makes any difference.

 

[ovrszd]

I only used mine for a short time before reverting back to the screw type top link so will top up my hydraulic level a bit even though it shows well up on the dip stick and see if it makes any difference.

Low fluid level isn't an issue. In what I described the return to tank fitting enters the reservoir above the fluid level. Nothing that can done about that.

But we're not sure that is your problem yet.

The DPCV will help with this problem if you can be without float?