no hydraulics can be added ????? ... the end of my dream ??

[Dave M7040]

In looking at one of the photos it is clear to me you have hydrostatic power steering.

A car or pickup truck with power steering always has the ability to control the steering even if the power assist is lost. There is a physical connection between the steering wheel and the front wheels.

A hydrostatic power steering system has no mechanical connection between the front wheels and the steering wheel. When you turn the steering wheel you are moving a hydraulic valve which sends hydraulic fluid under pressure to a hydraulic cylinder which moves the front wheels either left or right. If you lose hydraulic pressure, such as when the engine runs out of fuel and stops going down a steep hill, you would have no control over the steering.

Because the hydrostatic steering valve's oil supply is so critical, the tractors are usually equipped with a priority flow control. This control takes the output from the main hydraulic pump and reserves sufficient flow to always have steering. Excess flow is made available to th 3 pt hitch, a FEL, a backhoe.

Do you have any manual for your tractor?

I have marked up one of your photos to show you what I have seen of your hydraulic system so far.

In your third photo of the right side of the engine where there is a hydraulic pump, I can see a bit of a blue tag or label. Having a photo of whatever is on that label would be useful. If you see any other hydraulic items with a label, photograph them too.

Dave M7040

 

[Celle]

Thanks everybody. I take any idea/advice in consideration and try to learn from you guys. So, many thanks for any reply.

Dave, thank you for the clear answer, it explains a lot about the working of my tractor
I add some more pictures, hoping you will be able to tell me a little more.

I do have a few manuals in english but not a lot about the hydraulics and the little part that there is .... there is two blank pages(failed copy I guess)

I continu my quest because I don't want to rush and damage things.

 

[Celle]

... almost forgotten : I'll take a picture of that blue tag later on today Dave

 

[Celle]

Hi guys,

Now that I am starting to understand the hydraulic system a little better, I think it is about time that I clearly explain what I would love to achieve on my tractor

the blue little tag is the hydraulic pump : HLCB-D06 Power Steering Hydraulic Pump 6l/min 10MPa

The plan is to buy a mower with built on recuperation for grass and weeds. The recuperation can only be opened hydraulically (I'll add a picture of it) So, in fact, all I need is to install a lever that opens the bin and closes it again.

Now I am wondering : can I not just install a valve on my rear hydraulic lift ?? So I can plug in my mower when needed and profit of rear lifting hydraulic system that I have already ?

Thanks again for your help ! :thumbsup:

 

[Dave M7040]

Celle
I am going to post below a comparison of the priority flow control valves. Your Ty and a Lenar.
The image is marked up to show the similarity.
The Lenar valve label has much more Chinese characters and I enlisted the services of a Chinese friend to decipher it.

10 Mpa stands for mega pascal and is the same as 1,450 psi
6 litres per minutes is 1.5 gallons per minute

This is what the priority flow control is reserving for the steering system to work properly.

I don't have the time right now but will mark up more of your photos with questions.

Dave M7040

 

[Celle]

fantastic, thx a lot Dave !!!

 

[Dave M7040]

Celle

I have marked up more of your photos with questions.

The 3 pt hitch is controlled by a single acting cylinder. It will lift weight but relies on gravity alone to lower the lift arms.

I still think we will be able to identify where you can connect a double acting valve for your double acting implement cylinder if you can be patient.

Dave M7040

 

[quicksandfarmer]

Typical Chinese hydraulic plumbing is to cut into line #1 in the picture above. Most manufacturers have the alternative of replacing the single hard line with two hoses with quick-connects on them. Connect them together to get the same flow you have now, separate them and put a FEL or other device in-line.

Six liters per minute sounds really low though. My Jinma is rated for 32 liters/minute (8.7 gpm).

There are three solutions that I know of that people use on Chinese tractors when the built-in pump is not adequate. Sometimes there is a mounting on the engine for a second hydraulic pump. Sometimes there is a mounting on the PTO gearbox above the PTO shaft for a second hydraulic pump. You can buy a PTO mounted hydraulic pump as well, just google "PTO Hydraulic pump."

I really think you should ask in the Chinese Tractors forum, the Chinese tractors tend to use a lot of common components. Probably someone there will be able to look at your pictures and quickly tell you what you need to do.

 

[pmsmechanic]

The way I see it is that there are two pumps on this tractor. The one towards the front is for the power steering and the rear one is for the three point hitch.

The reason I say the front one is for the power steering is because the reservoir for it is too small for the single acting three point. All that needs to be done is identify the pressure line for the three point and tie into it. Sounds like there are others on this tread that know more about that than I do.

If the hydraulic pump is too small (pressure and flow) would it be possible to exchange it for a larger one?

 

[airbiscuit]

So are these tractors ridiculously cheap?