Zetor 3511 Hydraulic problems

[svein3221]

Hi
I have got a hydraulic problem on my good old Zetor 3511. It seems to be a drop i the hydraulic pressure so it is only able to lift empty equipment, both on the rear lifting arms and the rear hydraulic outlet.

I changed hydraulic oil some weeks ago to combi oil. When the problem started I changed back to hydraulic oil without results.. I have cleaned the magnetic filter and there were no big parts.

The only reason I can think of is that there may be some particles stuck in the pressure safety valve, but I can't find the valve...

Can someone please help me? Any ideas? I still want this great machine working in my garden!

Thanks
Svein

 

[agvg]

Did this happen suddenly?

 

[svein3221]

Hi Fordson
Yes, about one week ago.

Thanks
Svein

 

[agvg]

The valve is placed on the pump so you must take the pump down.

 

[Renze]

Also the o ring between pump plate at the bottom, and 3pt lift cover at the top, can fail.

 

[svein3221]

Thanks for answers. I have to open it then... Have to wait, I am using it for pulling these days.

Svein

 

[darshanpatil]

hi,in india if this happens then generally mechanics says that you have to change the hydraulic pumpwe get different types of pumps costing very cheap at indian rupees 1500 to a good quality pump at Rs5500.Here in india no good instrument available for replacing rubber kit inside the pump.Generally this replaced rubber kit does not work.