Backhoe no up or down

[Richard Tractor]

Greetings, Tractor bin sitting couple years at daughters, hot here summers, Running no everything works except raising or lowering ! What think you ???

 

[Richard Tractor]

It's a Jinma by the way

 

[Richard Tractor]

It's a Jinma, backhoe working when I moved it down here,

 

[2manyrocks]

First guess is fluid is not flowing to the cylinder that raises and lowers. If all the hoses are properly connected, maybe a stuck control valve from sitting?

 

[tacticalturnip]

First guess is fluid is not flowing to the cylinder that raises and lowers. If all the hoses are properly connected, maybe a stuck control valve from sitting?

Checking the simple things first.

 

[Richard Tractor]

Guess I'll open it up and tap the valves lightly
Been years since I was on this site, re registered, forgot my username, may have been Valley Ranch,

Thanks guys for coming on to help

 

[Richard Tractor]

Haven't changed the hoses , Tomorrow,

Never put off for tomorrow what you can do day after tomorrow,


Mark Twain

 

[Richard Tractor]

By the way guys when I pull back on the lever to raise the upper part of arm the pump is struggling to move fluid an the ram extend about 1/2"

 

[2manyrocks]

Is the fluid clean or has dirt/water/etc gotten into the system? And it has the proper amount of fluid?

 

[m5guy]

Is there a safety pin holding it in place?

 

[Richard Tractor]

Is the fluid clean or has dirt/water/etc gotten into the system? And it has the proper amount of fluid?

Yes added fluid, fluid clean

 

[Richard Tractor]

First guess is fluid is not flowing to the cylinder that raises and lowers. If all the hoses are properly connected, maybe a stuck control valve from sitting?

Tapped valves lightly with hammer, upper end moved couple inches two or three times then nothing,,,

 

[Richard Tractor]

First guess is fluid is not flowing to the cylinder that raises and lowers. If all the hoses are properly connected, maybe a stuck control valve from sitting?

I fluid is clean and filled, just tapped the valves lightly with hammer, upper end moved slightly, couple inches two or three times now nothing again,

 

[Richard Tractor]

Is there a safety pin holding it in place?

No pin holding it

 

[2manyrocks]

Are you able to raise and lower the front end loader? Can you also raise and lower the outriggers on the backhoe?

 

[Richard Tractor]

Are you able to raise and lower the front end loader? Can you also raise and lower the outriggers on the backhoe?

Front end loader works, that is separate hydraulic system,,,

 

[Richard Tractor]

Outriggers raise and lower properly,,,

 

[Richard Tractor]

Bucket movement is proper,,,

 

[Richard Tractor]

Is there a safety pin holding it in place?

There is no safety pin holding it in place,,,

 

[2manyrocks]

So the only problem is the largest cylinder at the bottom of the boom that is supposed to raise and lower the boom isn't working? The outriggers and the bucket cylinders appear to be working normally?

If this is what is going on, it just seems like you aren't getting any fluid flowing to the boom cylinder and my first suspect would be the control valve not letting fluid flow.

Was the machine left out in the weather all this time?