hydraulics/loader

[Gibson]

I just bought my first tractor a 47' 8n with a freeman loader. The hydraulic line running to the loader has a spin valve like an outside faucet to open and close the line. You have to open the line to use the loader, however to do this the old owner also had chains wrapped around the arms of the three point to hold them down. Even with the valve open the arms have to be chained down for the loader to work. If I take the chains off the loader won't work, only the 3 point will. Could someone tell me what's going on and if there is better or right way of setting this loader up without having to chain the 3 point down. I don't know much about this stuff yet but it can't be good on the tractor.

 

[r geiger(oR)]

I have a 50 8N and my 711 loader works the same way. I have to chain the arms down to get the fluid to the loader. This is normal. There may be a better way to hold down the arms tho, just can't remember what it is. (CRS).

 

[lha]

Your loader must be using the tap on the test port,which must either run the 3 point or the FIL,but does not have enough output to run both.Think of the path of least resistance,in which the 3 point is the easier path.for that reason,you must keep it from moving.---lha

 

[JMOR]

Reason for tie down of arms is that once they rise to top limit, there is an internal linkage that senses lift piston is at limit of travel & that kicks pump intake control valve closed, thus killing pump output. Below is a bit cleaner than chains.

 

[TheOldHokie]

(quoted from post at 08:32:35 03/17/10) Reason for tie down of arms is that once they rise to top limit, there is an internal linkage that senses lift piston is at limit of travel & that kicks pump intake control valve closed, thus killing pump output. Below is a bit cleaner than chains.

JMOR has explained the "WHY". Here is the "HOW" to fix it so that the 3pt and loader can be switched ON/OFF without leaving the seat.

[u:bad82a7693]Adding an External Hydraulic Port to N-Series Tractors[/u:bad82a7693]

The top cover shown in that How-To is available for sale if anyone is interested.

TOH

 

[Gibson]

Thanks guys. Sounds like there is no way of running both independant of one another without doing a remote modification, or buy another tractor. Looks like you need to be a machinest or at least have the equipment and time according the article I read. I was looking for an easier fix that doesn't exist. Anyway I just wanted to make sure chaining the arms down isn't hard on any internal parts? I'm sure to have many more novice questions in the future.

 

[TheOldHokie]

(quoted from post at 11:58:35 03/17/10) Thanks guys. Sounds like there is no way of running both independant of one another without doing a remote modification, or buy another tractor. Looks like you need to be a machinest or at least have the equipment and time according the article I read. I was looking for an easier fix that doesn't exist. Anyway I just wanted to make sure chaining the arms down isn't hard on any internal parts? I'm sure to have many more novice questions in the future.

Chained or modded is functionally the same. The relief valve is the only internal part of any concern - with the arms chained down/disconnected the pump won't shut off. Don't use the 3pt control lever to raise the loader and leave the lever in the UP position with the loader cylinders fully extended. If you do there is no place for the pressure to go - the internal relief valve will be held open and over time may suffer damage. After raising the loader manually move the 3pt lever back to the "neutral" position - can be tricky on a 9/2N.

TOH