mf 245 tractor

[jpl07]

Hello out there just wondering if anybody can help me with frontend loader plumbing? I have a mf 245 w/ loader that is plumb to pto shaft. The tractor already has a selector valve under the seat. I would like to know how to plumb to tractor correctly. pics and info would be great.

 

[namyessam]

Hello out there just wondering if anybody can help me with frontend loader plumbing? I have a mf 245 w/ loader that is plumb to pto shaft. The tractor already has a selector valve under the seat. I would like to know how to plumb to tractor correctly. pics and info would be great.View attachment 366009View attachment 366008View attachment 366010

From what I can see in the provided pictures, the loader hydraulic system is self contained. You have a fluid tank built in to the right hand loader frame. You have the breather above the loader valve. At the bottom of the tank is a suction hose to the pump with an inline filter. The hydraulic pump is driven by the PTO shaft. The pressure line runs from the pump to the left hand side of the hydraulic valve. You have a return line from the right hand side of the valve back to tank. The selector valve on top of the transmission is to tap into the tractor internal hydraulic system which is not required to run the loader. This is the best info I can give you with the information provided.

namyessam

BTW, I think you should have the suction line run level to the pump and not be tied up like it appears in the picture. I think there will be a greater chance of not supplying the pump with oil as needed.

After reading your original post, Do you want to elliminate the pto pump and run the loader off the internal tractor hydraulics? If so you need to run the pressure line from the left hand side of the valve to the selector valve on the top of the transmission. It appears the outlet has a cap screwed on the fitting. You will need to run a return line from the right hand side of the loader valve to a return port on the tractor transmission. I think there is a plug on the left hand side of the lift cover under the seat that can be used as a return port to the trans differential. If seems I have read about this port in a previous post some time ago but I don't remember the thread. You may contaminate the transmission differential fluid slightly depending on what kind of fluid was used and its condition in the original loader hydralulic system.

The selector valve will direct fluid to either the three point system or the loader and both cannot be used at the same time without shifting the selector valve.

something else I just thought of is the 245 may not have a very high flow rate of the tractors internal pump. You may have a very slow loader compared to the PTO pump. I will look it up and repost.

couldn't find the flow rate of the tractor hydraulic system.

 

[jpl07]

yes that is exactly what I want to do. Just wasn't sure how to plumb lines. Somebody told me I could plumb from loader control,back to selector valve and then use port by shifter, back to loader control to complete the cycle. I'm just not sure if he is correct, also not sure which is return.

 

[namyessam]

yes that is exactly what I want to do. Just wasn't sure how to plumb lines. Somebody told me I could plumb from loader control,back to selector valve and then use port by shifter, back to loader control to complete the cycle. I'm just not sure if he is correct, also not sure which is return.

install a 3000 psi pressure gage on one of the fittings on the selector valve, start the tractor move the draft lever to the rear transport position and the position lever to the constant pumping position. One position on the selector valve should raise the three point. shift the selector valve to the position that does not operate the three point and watch for pressue. Shut off the tractor, remove the pressure gage and cap the fitting. Install gage on the other fitting on the selector valve and start the tractor and leave the selector valve in the position that does not operate the three point and watch for pressure on gage. If one shows no pressure it may be a return port. You could remove the fill plug for the trans / differential and blow air into the port that is believed to be a return line and you should hear and feel air coming out of the fill port if it in fact a return port. Hope this helps. I have no knowlege of the selector valve you have or which port is which.

namyessam

 

[jpl07]

thank you I will try that. Also here are some pics of my selector valve. I believe when valve is pushed open it flows to loader, when closed it shuts off flow and operates rear lift, just don't know if I should plumb return to opposite side of transmission where internal pump is, or plumb return to plug by gear shifter on tractor. Any other info would be greatly appreciated!

 

[namyessam]

thank you I will try that. Also here are some pics of my selector valve. I believe when valve is pushed open it flows to loader, when closed it shuts off flow and operates rear lift, just don't know if I should plumb return to opposite side of transmission where internal pump is, or plumb return to plug by gear shifter on tractor. Any other info would be greatly appreciated!View attachment 366277View attachment 366278View attachment 366279View attachment 366280

I thought you were saying that there was a return port on the selector valve. In you picture of the selector valve it looks like there is one cap on the end and a plug midpoint. Is the cap an outlet of the selector valve or is it just containing the spool of the valve then having only one pressure port and no return port? I have read several times of members drilling and tapping the fill plug and using it for a return and also a member suggesting using the plug on the left hand side of the lift cover as a return. I guess which ever works best for you and if you have the equipment to drill and tap the fill plug. Either would work.

 

[jpl07]

Yes, it is an outlet.To my knowledge the cap is a port where the hose from the loader would hook to and that knob will open or close flow. Just need to know where the best place is to put a return back to loader. Thanks for trying to help me.