Free flow return

[solo]

I want to use a drill with a hydraulic fan on a jd 6410 or possibly 6800. I believe one of these ports is for the free flow return, but I don't know which one. Can anyone enlighten me?

 

[ACEngineering]

I want to use a drill with a hydraulic fan on a jd 6410 or possibly 6800. I believe one of these ports is for the free flow return, but I don't know which one. Can anyone enlighten me?View attachment 284316

Don't know about that model but I did one on a 8series and it as on the left hand side of the back end casting and had a big letter R on it or above it, and it was only M22 metric thread. I got a m22 male to 3/4bsp fitting and ran a drill up it to get max flow possible through it.

 

[Bobthebuilder]

Further down just above the pto guard on the right, on a 6820 anyway

 

[Gerbert]

The right one.
Left is flow. The big one I have never seen used, don't know what is does.
It's the same on both your tractors.

 

[principal skinner]

Further down just above the pto guard on the right, on a 6820 anyway

This, on 6920, 7530 anyway. Lower down on the right straight into the trans casing. Are the above going through the spool valve casing?

 

[solo]

Spoke with dealer and it is one of these ports but he couldn't remember which one. Suggested putting return in one spool slice and pressure in the other as a temporary fix, but must make sure return lever is left in float all the time.

 

[chickens and wheat]

Use pto guard one for full free flow return. I put male end on tractor and female on machine . Male end being easier to cover/keep clean . JD dealer should stock the awkward to get hold of m22 adapter

 

[solo]

Already got the male coupler on drill and a female coupler to connect onto it. Just got to get the adapter for the correct port to female coupler for now. Drill will only be used on the tractor this spring.

 

[Bobthebuilder]

Spoke with dealer and it is one of these ports but he couldn't remember which one. Suggested putting return in one spool slice and pressure in the other as a temporary fix, but must make sure return lever is left in float all the time.

that's the problem using 1 of those ports, it's not a true free flow, the 1 near pto guard goes straight into housing no valves to slow flow of oil down

 

[solo]

that's the problem using 1 of those ports, it's not a true free flow, the 1 near pto guard goes straight into housing no valves to slow flow of oil down

Will have a look in the morning and see if there is another plug by the pto guard.

 

[Bobthebuilder]

Will have a look in the morning and see if there is another plug by the pto guard.

iirc it's a 24 or 27 mm thread

 

[solo]

Ok thanks

 

[Kevtherev]

Yes it's an odd size and it will be mega tight.
Use it as said it's a true return to dump

 

[green giant]

There is no plug by the pto guard, 6000/10 you have to use the r/h plug shown in the picture, should work ok on a drill fan, there loads out there using this.

 

[brynseiri]

I had an adapter made up that screws in to the filler neck to run the post knocker.

 

[ACEngineering]

I had an adapter made up that screws in to the filler neck to run the post knocker.

this was tried by a JD dealer on a 8series before I got involved! it does not work if a high flow is required.

After about 40 or 50seconds the low oil warning light comes on and stops the aux service.

This is because the oil returning in through the filler tube takes too long to find its way back through the tractor to the internal clean oil reservoir there for the oil level drops in this reservoir and activates the warning light.

The bung on the left hand side marked R for return, returns the oil more directly to the reservoir I believe.

 

[Rs chunk]

Not a good picture and not sure what model of jd but should be same

 

[jd6820]

So many people got wrong idea, the 20/30 series is nothing like this, there is very unlikely to be a bung above PTO guard on a 6410 or 6800.

As green giant has already said, RH fitting in the picture posted earlier is the correct one for a free flow return, a 3/4 fitting is a fairly tight squeeze to push back collar but do-able all the same.

The big bung in the middle if I'm not mistaken is the lift control valve?

 

[brynseiri]

this was tried by a JD dealer on a 8series before I got involved! it does not work if a high flow is required.

After about 40 or 50seconds the low oil warning light comes on and stops the aux service.

This is because the oil returning in through the filler tube takes too long to find its way back through the tractor to the internal clean oil reservoir there for the oil level drops in this reservoir and activates the warning light.

The bung on the left hand side marked R for return, returns the oil more directly to the reservoir I believe.

Never had that issue, it's on a 6310 se, so maybe different system to an American built 8000 series? There's no plug above the pto cover on it. One suggestion was to plumb in to the spool return line?

 

[ACEngineering]

Never had that issue, it's on a 6310 se, so maybe different system to an American built 8000 series? There's no plug above the pto cover on it. One suggestion was to plumb in to the spool return line?

doubt a spool return line will be a proper free flow return though as will still have back pressure from going though a filter or from other oils returning from the block?