2485 Back hoe power check

[Grant1]

Is there any danger of breaking something if valve is set too tight. I used the backhoe this morning with no unusual noise and seemed to work fine.

 

[liberty2701]

Is there any danger of breaking something if valve is set too tight. I used the backhoe this morning with no unusual noise and seemed to work fine.

Worst case is the relief valve on the tractor is set to relieve the pressure before the backhoe valve. Other Than giving your backhoe a little more power than it specs for, nothing will be affected.

 

[DK35vince]

Should use a gauge IMO.
The relief pressure for my tractor is recommended at 2347-2489 PSI.
But my Rhino backhoe recommends only 2100 PSI max.

 

[liberty2701]

Should use a gauge IMO.
The relief pressure for my tractor is recommended at 2347-2489 PSI.
But my Rhino backhoe recommends only 2100 PSI max.

I agree if the specs were quite different but they are not. The main relief valve is 2560psi. The 2485 bh specs out at 2466psi. Less than 100 psi difference.

 

[JoelD]

A nice outcome with gauge is that you will know your settings with certainty

 

[grm61]

This is an old post but I figured out my problem. Somehow, I think through the dealer. My relief valve setting got turned down on my backhoe severly limiting its power (that was the hissing). I adjusted it to the point were it kicks in just before the tractors relief valve kicks in. Now, my backhoe feels like the way it is suppose to. Lots and lots of power.

Thankyou for this, mine seemed to have lost some power and I have the hissing you were talking about retracting the boom... it also seemed that the hotter it got the weaker it got....I will look into it.
Been meaning to get a gauge and check all my pressures just have not got around to it.

 

[liberty2701]

How would you go about checking the pressure on each backhoe function if you wanted? I have a guage to check general pump pressure which you just plug into a port. Would you have to get an inline guage on the return hose to check the pressure?

 

[VictorW]

There's only the one pressure relief valve on the backhoe assembly valve stack that controls all the valves. I got the needed adapters to fit the bh cylinder hose connections and place it inline, like a "T" connection, on one of the cylinder's connections. Any cylinder will work because they are all controlled by that one relief valve. Run that cylinder to it's end of travel, in or out depending on which connection you hooked to, and look at the gauge while holding the control lever in that position. You want the pressure side. Not return.

 

[liberty2701]

There's only the one pressure relief valve on the backhoe assembly valve stack that controls all the valves. I got the needed adapters to fit the bh cylinder hose connections and place it inline, like a "T" connection, on one of the cylinder's connections. Any cylinder will work because they are all controlled by that one relief valve. Run that cylinder to it's end of travel, in or out depending on which connection you hooked to, and look at the gauge while holding the control lever in that position. You want the pressure side. Not return.

I picked up a tee and fittings from TSC. I put it inline on the supply port to the backhoe. I adjusted the relief valve on the backhoe so it was higher than the tractor relief valve( did not kick in).. I dead headed each backhoe lever to check the pressure on each position. I reset the backhoe relief valve to where I like it. I now certified each bh function is operating properly.

 

[VictorW]

Your way works too by measuring the main supply and maybe easier finding the fittings. I hope you saw an improvement as I did in mine.