5640 Loader Valves

[Willowfarms]

I have a new to me 5640SE with a front end loader, currently plumbed into the rear remotes. Does anyone have any info on how to plumb it in with a control valve and joystick to free up the rear remotes?

 

[chevytaHOE5674]

Post a picture of the rear remote valve to be sure, but Fairly certain that's a closed center load sense system, so you will need a CCLS valve, then tap into the pressure to the remotes, shuttle Tee in the load sense line, and return to tank.

This is how many chose to tap into the pressure side. There is a return fitting in the oil fill tube if you wish. The load sense line is the small line going into the remote valve, it will get the special shuttle tee.

 

[Willowfarms]

I’ll get a picture of the rear remotes tonight.

 

[sotxbill]

You CAN.. install a hv4903 under the priority block... if there is room... No cab, there is plenty of room... with cab????

 

[Harry in Ky]

You CAN.. install a hv4903 under the priority block... if there is room... No cab, there is plenty of room... with cab????

You CAN yes, but I wouldn't recommend it. (it's HV4902, by the way) Personally, I never use that block. I've installed a few dozen of the HV5902 because it has three O ring ports instead of two NPT ports. I just don't care to deal with tapered pipe thread any more than I have to.

That said, the block will only supply oil from the internal pump. To get combined flow from both pumps it needs to be done as described above.

 

[sotxbill]

Using a open center remote on the loader..... so that the fluid is returned to the rest of the system. Here is an application on a 5610. Note he added the second pump to the priority valve to add the dual pump scenario for the rest of the tractor. So its open center on the bottom and closed center on the top at the p valve. As you can see, this may not work with a cab due to no clearance unless you cut a bit on the floor.

 

[Willowfarms]

Yea I don’t think that will work as mine is a cab model and not a lot of space.

Here is a picture of the current setup

Would something like a Akon lvm92 work? Or is there a more cost effective alternative?

 

[chevytaHOE5674]

CCLS valve. The best way to tap in and utilize both pumps is tapping into the pressure, load sense, and return line.

If you go that route make sure to use a closed center load sensing valve. Not cheap but worth it IMO.

 

[Willowfarms]

Ok, thanks for the help, that’ll get me started. If you have any pictures of one done please share, thanks

 

[chevytaHOE5674]

Not a 40 series. But a very similar setup on a 30 series.
Tee in the pressure line at the tip of my finger in the first picture.
Return oil into the fill tube.
Shuttle check tee in the load sense line.
And the CCLS valve mounted up under the battery/cab with cables for joystick running inside.

 

[Willowfarms]

That’s perfect, really appreciate it!

 

[Willowfarms]

Follow up question, so I had a typo in the original post. I have a 5640 SL, not SLE, and tractor data is showing it as open center, is this correct for the SL, or does it need the CCLS loader valve?

 

[sotxbill]

Follow up question, so I had a typo in the original post. I have a 5640 SL, not SLE, and tractor data is showing it as open center, is this correct for the SL, or does it need the CCLS loader valve?

My wifes 5640sl is cc...However, that does not mean that someone has not put a hv4902 under the cc priority valve and intercepted the flow. If tapped before the priority valve, its oc. Have a late 5610 that has that done for the loader.

 

[chevytaHOE5674]

That picture posted is CCLS remote tractor.

 

[Willowfarms]

How can I determine if the system is CCLS or open center? The manual shows the CCLS system to have an arrangement of 3 filters on the right hand side of trans., and only shows a single filter for the open center fixed displacement system. Mine only has the single filter on the right hand side, but also has a small 1/4” line running from the left hand side of the hydraulic blocks back to the rear remotes

 

[chevytaHOE5674]

The pictures you posted are a CCLS remote valve. That 1/4" line is the load sense.

 

[Willowfarms]

Is the steel 1/4” line the load sense line? It looks like you have a tee in it, and then a second tee with two hoses coming from that in the picture you posted above. Is that correct? Is so where is the second hose going?

 

[chevytaHOE5674]

Correct there are two shuttle check Tees back to back. On the first shuttle Tee one hose goes to the priority valve on the tractor (original load sense line to the remote valve), 2nd hose goes to the loader valve, then it feeds the 2nd Tee. 2nd shuttle tee feeds two separate remote valves.

 

[Willowfarms]

Thanks. Do you have a size or p/n for the tee?

 

[chevytaHOE5674]

The New Holland number for a shuttle Tee with JIC fittings is 83954424 and is spendy. The NH part number for one with ORFS fittings is 81862791 and is much more affordable.