Hydraulics

[Mcfclz]

I have a belt driven hydraulic pump on a case 442 with a FEL when ever I engage the value the pump squeals & motor bogs down. What is causing this & how could I correct the problem!! Your suggestions!

 

[dave1949]

I have a belt driven hydraulic pump on a case 442 with a FEL when ever I engage the value the pump squeals & motor bogs down. What is causing this & how could I correct the problem!! Your suggestions!

Is there a pressure relief valve somewhere in the hydraulics?

It sounds like the pump is stalling due to low or dead headed flow.

If you ask a moderator to move this post to the the Hydraulics section in General Forums, or just post again there, you will get better and more help.

http://www.tractorbynet.com/forums/hydraulics/

 

[J_J]

I have a belt driven hydraulic pump on a case 442 with a FEL when ever I engage the value the pump squeals & motor bogs down. What is causing this & how could I correct the problem!! Your suggestions!

What is attached to the work ports on the valve?

If you are at the end of cyl travel, the relief will activate.

If a hyd motor is fully loaded, the relief will go off.

You may have a QD loose and can not pass the fluid to where it supposed to go.

If you have a cyl on the work ports, is the cyl moving.

 

[Mcfclz]

Work ports have cly connected, cly move very slowly when value is engaged

 

[Mcfclz]

I have a chief directional 4way value 3 pos. tandem center

 

[J_J]

Speed of operation is based on pump GPM , so if you pull the lever back, what happens?

 

[Mcfclz]

I have a concentric gear pump 4-8 GPM driven by 18 hp vanguard

 

[Mcfclz]

When lever is engaged pump squeals & motor bogs & cly move slowly

 

[J_J]

You might put a hyd gauge in the valve and check out the pressure.

Is the cyl connected to anything and is it binding/bent, etc..

 

[Mcfclz]

Clys are connected toFEL bucket & bucket frame