Belarus 400a 3 point issue

[Chris1997]

I'll start this off with I am not very familiar with working on tractors but can generally figure things out. When I was given my land my grandpa left me with a belarus 400a. Has always ran great my whole life. Always had a small hydraulic leak
My dad ran it out of hydraulic fluid one day, I serviced it back to full as well as cleaned the filter. Ever since then the 3 point will not keep the bursh hog up at all. It'll lift it very slowly then just drops it. Any ideas ? Thanks in advance for the help

 

[cjunrau]

I am not sure if you replaced the pump but if not the pump could be damaged. I would check how much pressure the pump is making by plugging in a gauge in the rear hyd outlets. the cylinder that operates the 3POINT may also be leaking past the seals. I may be wrong on it being a cylinder as I haven't had a 400 Belarus. I hade the 572 and 825. they had a regular hyd cylinder that operated the 3point, was nice as it gave you down pressure.

 

[Chris1997]

I am not sure if you replaced the pump but if not the pump could be damaged. I would check how much pressure the pump is making by plugging in a gauge in the rear hyd outlets. the cylinder that operates the 3POINT may also be leaking past the seals. I may be wrong on it being a cylinder as I haven't had a 400 Belarus. I hade the 572 and 825. they had a regular hyd cylinder that operated the 3point, was nice as it gave you down pressure.

I have yet to replace anything. My hopes from a few things I've read is a possible clog in a valve. But I have no idea where any of the hydraulic valves are located. Or if I needed to bleed the hydraulic system. I will definitely give that a try.

 

[Chris1997]

I have yet to replace anything. My hopes from a few things I've read is a possible clog in a valve. But I have no idea where any of the hydraulic valves are located. Or if I needed to bleed the hydraulic system. I will definitely give that a try.

What pressure should I be seeing?

 

[cjunrau]

What pressure should I be seeing?

they came factory with 2000psi. 1500 would still be ok. if it's like the one I had when it went bad was under 1000. I installed a good used one and the loader worked again.

 

[cjunrau]

What pressure should I be seeing?

just saw that the 400 had draft control. you may have a leaver somewhere that will switch to solid or draft. they are a funny tractor in that sense.

 

[Chris1997]

just saw that the 400 had draft control. you may have a leaver somewhere that will switch to solid or draft. they are a funny tractor in that sense.

I will check that out thank you

 

[cjunrau]

I have yet to replace anything. My hopes from a few things I've read is a possible clog in a valve. But I have no idea where any of the hydraulic valves are located. Or if I needed to bleed the hydraulic system. I will definitely give that a try.

Not sure where on that one the 3point lever is. mine had it up on the right side by the dash. 3 levers for hyd. the hyd spool is behind the cover right there.

 

[RedWhiteandBlueWoods]

I'll start this off with I am not very familiar with working on tractors but can generally figure things out. When I was given my land my grandpa left me with a belarus 400a. Has always ran great my whole life. Always had a small hydraulic leak
My dad ran it out of hydraulic fluid one day, I serviced it back to full as well as cleaned the filter. Ever since then the 3 point will not keep the bursh hog up at all. It'll lift it very slowly then just drops it. Any ideas ? Thanks in advance for the help

Could be a valve. Our 2470 has that issue and it causes the disc wings to float.

 

[Chris1997]

Could be a valve. Our 2470 has that issue and it causes the disc wings to float.

Which valve?

 

[RedWhiteandBlueWoods]

Which valve?

one of the hydraulic valves.