Power beyond and extra remotes + backhoe

[grizzjeeper]

I had rear remotes added by my dealer and now I am questioning if this is going to be ok to do what I want. Please excuse if I do not use the right terminology for the parts They added the Kubota valve for an additional remote and the power beyon runs to this valve. I have quick disconnects but the tech said I can run the backhoe though the valve (not the remotes) but to keep an eye on the heat on the fittings..? can simply bypass the valve because of the quick disconnects but the idea was to have a hydraulic thumb possibly. What are your thoughts ? This is an l3400 hst

 

[Dutch61]

Where is the switch/valve for the thumb? I assumed the thumb would use BH "power" source without modifying the tractor, and have a switch on one of the 2 main BH controllers/joystick. Since Power Beyond supplies flow to the BH, I always wondered if inside the BH there were fittings to allow a thumb to articulate, but this may violate the flow of fluid and a separate source is needed, independent of the power beyond (up stream?)

 

[MarkV]

If you run the backhoe through the power beyond feed your remote is disabled. If you run through the valve you have used your one remote. Either way you are a outlet short for a thumb. You can plumb a thumb from the power beyond port on the backhoe control valve but it will still require another valve to operate the thumb.

MarkV

 

[grizzjeeper]

No the powerbeyond flows through the valve. The return from the backhoe would go back through valve so I still have my remote. Basically then valve would divert power to remote. Extra remote return line now dumps into hydro fill hole.

I wouold intercept the valve so in and out on valve go through backhoe first. Out on valve still goes back to power beyond return and remote just intercepts circuit and diverts oil to remotes and that retuen gors to the fill. Does this make sense?

 

[grizzjeeper]

Anyone else with thoughts on this?

 

[Dutch61]

No additional thoughts, and I'm still confused. It looks like you added a remote that only moved the physical location of the BH power hook-up. I asked my dealer to show me how the thumb worked on the Kubota BH (I think it was a model 26 TBL?) and on the unit there was a foot operated rocker peddle, at the right hand base of the controller tower, we did not discuss how it got "power". Your set up does not look like you will be able to articulate the thumb very easily. I assume you need 2 hands on the BH controls to position for pickup and then with the use of an electric switch (very close to your hands, i.e. on one control lever) or the foot peddle, to bring it all together (bucket, object, thumb) all while controlling the BH with both hands.

I assume you added that remote (with lever?, we can't see the front side) to be used with other implements on the 3 point hitch, a hydraulic tilt feature on a back blade, maybe the dealer also misunderstood your needs/request.

 

[rbargeron]

Anyone else with thoughts on this?

How you connect everything up depends on how "optimized" you want the system to be. The most fancy approach is to use large-bore hose & fittings with power-beyond setups for each valve. That way no two systems interact under load and fluid heating is kept under control. The backhoe's control valve is already set up like this internally so boom, dipper, swing and curl operate independently.

Connecting everything with 3/4" fittings, quick connectors, hoses and PB lines is a lot of plumbing and expense - not to mention bulk. I've noticed ton-rated FEL's on cab tractors that cheat and use 1/2" disconnects just to save space.

But not all the hydraulic functions are actually going to be used at the same time so you can get away with just connecting some of them in series like you're talking about. The comment above about heat is on the mark - if all the supply flow goes thru a path with small fittings before it gets to the valves, heat-up will be an issue.

 

[radioman]

No the powerbeyond flows through the valve. The return from the backhoe would go back through valve so I still have my remote. Basically then valve would divert power to remote. Extra remote return line now dumps into hydro fill hole.

I wouold intercept the valve so in and out on valve go through backhoe first. Out on valve still goes back to power beyond return and remote just intercepts circuit and diverts oil to remotes and that retuen gors to the fill. Does this make sense?

yes- you are basically stealing the power. I suspect you won't have curling power of BH bucket and push off hydrualic thumb same time. With your setup- like your dealer said- watch for the heat. When you are using the BH- it generates alot of heat and that heat will go through the power beyond port of the remote valve and the whole block will be hot to touch. The power beyond in simple layman terms means the fluid is always moving, never stopping. it doesnt matter if the control valve is in use or not it just gets diverted from power beyond port to the ram you are using.

 

[magicheater]

How you connect everything up depends on how "optimized" you want the system to be. The most fancy approach is to use large-bore hose & fittings with power-beyond setups for each valve. That way no two systems interact under load and fluid heating is kept under control. The backhoe's control valve is already set up like this internally so boom, dipper, swing and curl operate independently.

Connecting everything with 3/4" fittings, quick connectors, hoses and PB lines is a lot of plumbing and expense - not to mention bulk. I've noticed ton-rated FEL's on cab tractors that cheat and use 1/2" disconnects just to save space.

But not all the hydraulic functions are actually going to be used at the same time so you can get away with just connecting some of them in series like you're talking about. The comment above about heat is on the mark - if all the supply flow goes thru a path with small fittings before it gets to the valves, heat-up will be an issue.

To do it correctly is to have the backhoe valve bank in series with the power beyond circuit. It will work to route it through another valve body but is not optimum. I configured mine so I just connect 1 hose from the tractor to the back hoe and 2 hoses from the backhoe to the tractor, placing it in series with the rest of my system. When I disconnect I just plug the hose from the tractor to where the backhoe power beyond hose plugged in, completing the power beyond circuit for the tractor. When I put my backhoe on I had to reposition my extra joystick that I use for remotes to allow the clearance I needed. It has worked out well.