Backhoe Backhoe Control Valve

[JoelD]

Hope your better soon. Once you figure sizes you’ll be good.

 

[sodamo]

Hope your better soon. Once you figure sizes you’ll be good.

Yea, me too
I think you got the sizes. I had the black O ring size, not the other one.
Sadly, what I know about hydraulics wouldn’t buy me a cup of coffee.

 

[wdchyd]

Hey Guys, does this Nimco hyd valve look like yours? The tag numbers are different than what is posted here.
I am making up prepackaged replacement seal kits for these as we have had several like these come in for repairs the last few years. Usually we just match them up out if our normal stock, but this should make it easier. The OEM yellow seals used on the spools are gummy and I’m thinking whatever material they used from Nimco is not compatible with normal hyd oil, we have a better seal in mind.
Thanx

 

[sodamo]

Thanks, Bill. Sounds like that might be helpful. I worked on mine without dismounting from the backhoe so couldn’t read the plate.

 

[sodamo]

Thanks to the info from JoelD I think my valve is back in service, at least no apparent leak on top side. May be a drip on bottom, not sure.

I used these


Apparently the white orings don’t last even if ‘new’ the ones i put in last week were mush already.

Wish I had replacements for the nylon washers.

BTW, I was able to replace these orings without dismounting the complete valve. Just loosened the 4 mounting bolts and worked it right on n the hoe.

Anyone know a good, reasonable cost replacement for the stabilizer boots? Mine are pretty shot, but $40 is not reasonable.

 

[sodamo]

Used the backhoe today, about 20+ ft trench along the driveway.
Sadly, valve is still leaking, but from the bottom. Top is good. Not sure what needs replacing for that. Anybody done a complete rebuild of all rings and seals?
Will just suffer thru it for now and just keep hydro fluid topped off.

 

[VictorW]

The bottom uses the same size o-rings and white nylon backup washers. It looks like a copy of the top other than the centering spring it attached to the end of the spool. The caps on the bottom don't seal the fluid. They just house the centering spring. You may want to take off the entire valve assembly for these because it would be much easier than trying to do it all upside down.

 

[wdchyd]

....................You may want to take off the entire valve assembly for these because it would be much easier than trying to do it all upside down.

X2.........do it once, do it right

 

[sodamo]

The bottom uses the same size o-rings and white nylon backup washers. It looks like a copy of the top other than the centering spring it attached to the end of the spool. The caps on the bottom don't seal the fluid. They just house the centering spring. You may want to take off the entire valve assembly for these because it would be much easier than trying to do it all upside down.

Thanks, Vic. Yea, I don’t always do well upside down.

 

[sodamo]

X2.........do it once, do it right

Gawd, hope I grow up to be as smart as you