FEL connections

[oregontrail]

I'm working on an LA650 front end loader, and just wanted to double-check that I understand the hydraulic connections. I bought a Cross DV loader valve for it and I want to connect the control valve to the tractor hydraulic block.

The new loader valve has ports labeled A, B, C, D, IN and OUT. In addition, it has a Power Beyond port plus a Power Beyond "conversion plug" that must also be installed, if I understand the instructions correctly.





The hydraulic block on the tractor has three ports, which the manual labels IN, OUT (both facing outwards) and Tank (i.e., low-pressure return, facing forward).


How they connect:
- The hoses to/from the loader arm cylinder connect to A and B, and the hoses from the bucket cylinder connect to C and D.

If I understood an earlier conversation about this:
- The OUT port on the tractor block is connected to the IN port on the loader valve; it's providing power.
- The OUT port on the loader valve connects to the Tank port on the tractor hydraulic block; i.e., it's a low-pressure return
- The Power Beyond port on the loader valve connects to the IN side of the loader block; it's a high-pressure return.

I don't really understand the conversion plug, but I bought it and I plan to install it (it goes on the side, whereas the Power Beyond output port is on the same face as the other ports).

Does all that sound right?

Thanks!

 

[TheOldHokie]

I'm working on an LA650 front end loader, and just wanted to double-check that I understand the hydraulic connections. I bought a Cross DV loader valve for it and I want to connect the control valve to the tractor hydraulic block.

The new loader valve has ports labeled A, B, C, D, IN and OUT. In addition, it has a Power Beyond port plus a Power Beyond "conversion plug" that must also be installed, if I understand the instructions correctly.

View attachment 174838 View attachment 174839

View attachment 174840

The hydraulic block on the tractor has three ports, which the manual labels IN, OUT (both facing outwards) and Tank (i.e., low-pressure return, facing forward).
View attachment 174841

How they connect:
- The hoses to/from the loader arm cylinder connect to A and B, and the hoses from the bucket cylinder connect to C and D.

If I understood an earlier conversation about this:
- The OUT port on the tractor block is connected to the IN port on the loader valve; it's providing power.
- The OUT port on the loader valve connects to the Tank port on the tractor hydraulic block; i.e., it's a low-pressure return
- The Power Beyond port on the loader valve connects to the IN side of the loader block; it's a high-pressure return.

I don't really understand the conversion plug, but I bought it and I plan to install it (it goes on the side, whereas the Power Beyond output port is on the same face as the other ports).

Does all that sound right?

Thanks!

You got it. The 1V2853 conversion sleeve must be installed in the port on the side of the loader valve for things to work. Whats the model number of the valve? If you bought a model with 4 position regenerative bucket spool the bucket cylinders must be connected in a specific order.

Dan

 

[PoTreeBoy]

You got it. The 1V2853 conversion sleeve must be installed in the port on the side of the loader valve for things to work. Whats the model number of the valve? If you bought a model with 4 position regenerative bucket spool the bucket cylinders must be connected in a specific order.

Dan

I was assuming the longer detent section was for float detent, so A & B would be for the boom cylinders, but you bring up a good question.

 

[TheOldHokie]

I was assuming the longer detent section was for float detent, so A & B would be for the boom cylinders, but you bring up a good question.

When I looked at the catalog all models have 4 way 4 position with float detent on spool 1 (boom).

Spool 2 (bucket) is available as 4 way 3 position or 4 way 4 position with regen in fourth position

Dan

 

[PoTreeBoy]

Or

When I looked at the catalog all models have 4 way 4 position with float detent on spool 1 (boom).

Spool 2 (bucket) is available as 4 way 3 position or 4 way 4 position with regen in fourth position

Dan

That's good to know. I think OP will appreciate regen on the bucket dump, whether he realizes it or not. Cross 'made in USA' probably paid a little more.

 

[TheOldHokie]

Or

That's good to know. I think OP will appreciate regen on the bucket dump, whether he realizes it or not. Cross 'made in USA' probably paid a little more.

Without regen Farmer Bob wants $520 plus tax and shipping.

Dan

 

[oregontrail]

Thank you @TheOldHokie! That's great.

The models have long alphanumeric names, depending on options. Here's mine:

Cross DV102ACXYG0P13

• DV10 = 10 GPM version (DV15 is the 15 GPM version).
• 2 Number of spools = 2
• AC(Spool Type):
  • A (1st spool): 4-way, 4-position, open center, float spool
  • C (2nd spool): 4-way, 4-position, open center, regen “IN” position
• XY (Actuator Options -- actuator behavior for spools 1 and 2):
• X: 4-pos spring-centered to neutral, detent in float
• Y: 4-pos spring-centered with regen
• G (Relief Valve): Adjustable 1500–3000 PSI, factory set @ 2000 PSI.
• 0: no power beyond
• P = standard top inlet/outlet
• 1 = all ports 3/4-16 SAE
• 3 = single-handle actuator assembly (joystick)
  
  Can you please explain more about "If you bought a model with 4 position regenerative bucket spool the bucket cylinders must be connected in a specific order"? Do you mean that hoses C and D must be in the right positions? And if so, which end of the bucket cylinder goes to C and which to D?
  
  Also, my tractor runs at 2500 psi, but I note that the relief valve is factory-set at 2000 PSI. Any idea how to adjust that?
  ​

 

[TheOldHokie]

Thank you @TheOldHokie! That's great.

The models have long alphanumeric names, depending on options. Here's mine:

Cross DV102ACXYG0P13

• DV10 = 10 GPM version (DV15 is the 15 GPM version).
• 2 Number of spools = 2
• AC(Spool Type):
  • A (1st spool): 4-way, 4-position, open center, float spool
  • C (2nd spool): 4-way, 4-position, open center, regen “IN” position
• XY (Actuator Options -- actuator behavior for spools 1 and 2):
• X: 4-pos spring-centered to neutral, detent in float
• Y: 4-pos spring-centered with regen
• G (Relief Valve): Adjustable 1500–3000 PSI, factory set @ 2000 PSI.
• 0: no power beyond
• P = standard top inlet/outlet
• 1 = all ports 3/4-16 SAE
• 3 = single-handle actuator assembly (joystick)
  
  Can you please explain more about "If you bought a model with 4 position regenerative bucket spool the bucket cylinders must be connected in a specific order"? Do you mean that hoses C and D must be in the right positions? And if so, which end of the bucket cylinder goes to C and which to D?
  
  Also, my tractor runs at 2500 psi, but I note that the relief valve is factory-set at 2000 PSI. Any idea how to adjust that?​

The pressure adjustment should be documented in the valve literature. A common mechanism is a screw with locknut. You loosen the locknut and turn the screw in to increasecand out to decrease.

You can safely set it higher than the tractor and the tractor setting will overvride it.

If left at 2000 PSI it will reduce tractor supply pressure for loader and all downstream valves including rearvremotes and 3pt.

Since you have two dump positions you will immediatly know if you connect the regen port backwards. Bucjet movement will be reversed.

Dan