MF 265 Hydraulics Question

[rainman4820]

Morning all - looking for advice on how to troubleshoot a hydraulics issue - a coup!e of years ago the power steering cylinder set began leaking and was rep!aced. Now there is a leak in the power steering system somewhere as steering gets tough and I have to add fluid, however, now I have noticed that the front end loader hydraulics are also operating very slow unless I add lots of rpms. 3pt hydraulics seem to work fine.

Does the front end loader use an auxiliary hydraulic pump?

Is this a weak hydraulic pump and coincidentally a leak on power steering or ? Any thoughs on where to begin to isolate this issue and troubleshoot are appreciated!

 

[Jim.ME]

You need to tell us if the tractor has a front pump for the loader or if it is plumbed into the tractor hydraulics. Your tractor has an internal pump that operates the three-point. Your tractor could have a front pump for the loader as well as the internal pump for the three-point. The loader could be run from the same internal pump as the three-point and would be slow as that pump has low volume. Your Tractor could have an internal auxiliary higher volume pump to supply remote couplers and the loader. As you can see with the options you need to provide more info on what you have otherwise everyone is just guessing. Is there a pump mounted in front of the front crankshaft pulley with a drive shaft between them? Are there several tubes coming out from the cover the PTO lever is in? Does the loader operate using control levers beside the seat or with a different control up on the loader itself? Pictures may help.

I believe the power steering is a separate system. When you add power steering fluid you put it in a pump reservoir on the engine don't you? If so that has nothing to do with the three-point or the loader.

Do you have the operator's and service manuals for your tractor and loader? The Operator's manual will help you identify things and operate controls. The service manuals will have trouble shooting and repair info.

Is it a Massey Ferguson loader? The loader may have its own manuals.

 

[rainman4820]

Thank you JimME - this is a buffalo brand front end loader and I have looked again at the tractor and it appears that the loader uses the factory hydraulics as everything is plumbed back to a pump that is located on the left side of the seat. I agree that the power steering is a separate issue but just wanted to mention since it started acting up at the same time.
I checked the hydraulic fluid (dipstick on right side of seat) and the fluid looks clean but the level is above the full mark.
I do have the manual and plan to go ahead and change the hyd fluid and filter to see of the performance of the front end loader returns.

 

[Bob NY]

Thank you JimME - this is a buffalo brand front end loader and I have looked again at the tractor and it appears that the loader uses the factory hydraulics as everything is plumbed back to a pump that is located on the left side of the seat. I agree that the power steering is a separate issue but just wanted to mention since it started acting up at the same time.
I checked the hydraulic fluid (dipstick on right side of seat) and the fluid looks clean but the level is above the full mark.
I do have the manual and plan to go ahead and change the hyd fluid and filter to see of the performance of the front end loader returns.

Do you mean a pump to the left of the seat or a valve? If there is a valve under the left side of the seat connected to levers to the right of the seat, you have what is known as cross over remote hydraulics. That valve should be plumed to the round cover where the PTO lever is. The pressure comes from the auxiliary pump inside the tractor.

 

[rainman4820]

Still trying to sort.this out and keep things around the farm moving so I appreciate your comments and patience... Couple of items to clarify - its somewhat irrelevant but the front end loader is a Bison not Buffalo (have a hard time with those 2). Also, I am researching further but looks like the hydraulics from front end loader go thru the controls and then to the device that I assume is a pump on the left hand side of the seat. Yes it is located next to the pto lever. It appears to have an oil filter shape on the bottom so I assume that's the hydraulic filter. nothing on the right hand side of the seat except for the dipstick.

 

[Jim.ME]

Still trying to sort.this out and keep things around the farm moving so I appreciate your comments and patience... Couple of items to clarify - its somewhat irrelevant but the front end loader is a Bison not Buffalo (have a hard time with those 2). Also, I am researching further but looks like the hydraulics from front end loader go thru the controls and then to the device that I assume is a pump on the left hand side of the seat. Yes it is located next to the pto lever. It appears to have an oil filter shape on the bottom so I assume that's the hydraulic filter. nothing on the right hand side of the seat except for the dipstick.

This sounds like your tractor may have the auxiliary hydraulic pump and the loader is supplied by it. The tubes related to that pump pass through the cover the PTO lever is in. Does that sound like yours? When you get a chance post some pictures of the setup.

Do you have the Operator's Manual and the service manual for your MF 265?

Does the differential housing of your tractor have a 3-bolt cover in the bottom of the housing? If so, there is likely a screen/filter above that cover. It is for the hydraulic pump suction. Have you cleaned or changed that screen/filter?

 

[Bob NY]

Still trying to sort.this out and keep things around the farm moving so I appreciate your comments and patience... Couple of items to clarify - its somewhat irrelevant but the front end loader is a Bison not Buffalo (have a hard time with those 2). Also, I am researching further but looks like the hydraulics from front end loader go thru the controls and then to the device that I assume is a pump on the left hand side of the seat. Yes it is located next to the pto lever. It appears to have an oil filter shape on the bottom so I assume that's the hydraulic filter. nothing on the right hand side of the seat except for the dipstick.

Pictures of the pump would be very helpful.

 

[rainman4820]

Thanks for hanging in there with me - pictures attached
It appears that the hyd hoses from the loader move back through the hyd controls and then directly back to the "pump" on the left side of the drivers seat (near the PTO lever). I see nothing on the right side of the seat near the dipstick.
I couldn't find a 3-bolt cover on the differential. Is it directly underneath?

I have manuals for the 265 inbound now.

 

[Jim.ME]

Thanks for hanging in there with me - pictures attached
It appears that the hyd hoses from the loader move back through the hyd controls and then directly back to the "pump" on the left side of the drivers seat (near the PTO lever). I see nothing on the right side of the seat near the dipstick.
I couldn't find a 3-bolt cover on the differential. Is it directly underneath?

I have manuals for the 265 inbound now.
View attachment 118668View attachment 118669View attachment 118670

Yes, the cover is directly at the bottom of the housing , the oil must be drained prior to removing the cover, or you will have a mess.

There is no pump left of the seat. There is a single spool control valve, mounted under the plate below the seat, which is operated by the handle next to the seat on the right side. The other item in your picture, located further down behind the footrest, is the hydraulic filter for the auxiliary hydraulic system. The standard and auxiliary hydraulic pumps are both internal of the tractor, inside the differential housing. Those tubes attached to the cover, that has the PTO lever, are carrying fluid associated with the auxiliary hydraulic system. More pictures of the plumbing from the valve by the seat to the loader up front, may help us see how it was plumbed. Is there a control valve on the loader?

 

[rainman4820]

Thank you for taking time to mark up these photos - see very simple diagram of the hydraulic setup and a picture of where the hoses are connected that supply hydraulics to the loader. I will have a service manual in hand this afternoon and may be able to speak to this issue with more specificity. I did check and I do have the cover with 3 bolts under the diff.

Since maintenance is due, I will likely go ahead and remove the cannister filter located under the valve to the left of the drivers seat and drain and remove the 3 bolt cover under the diff to access the filter located there.

While I am waiting for the manual and filters, can you educate me on the control lever for the aux hyd valve? Whats the purpose and what can I expect when moving the lever?

 

[Jim.ME]

I do not see an answer to: "Is there a control valve on the loader?" I am guessing there is. I am also guessing the auxiliary valve must be locked in the detent position to supply the loader control valve. If the lever on the right side of the seat is moved to the centered position of the aux valve the loader would not work, if this is right.

In your drawing, if the control lever is intended to be the one at the right of the seat it is the control component of the aux valve, it is not in the hose routing.

 

[rainman4820]

I should have been more specific when labeling the "control lever" in the drawing - this is intended to depict the control level (raise/tilt) for the loader. A picture of this device is below. Does this answer the question on whether there is a "control valve"? There is no other device between
the loader control valve and the tractor, just hoses.

.

 

[Jim.ME]

So, it has a control valve with control levers for the loader functions.

The supply and return lines are on the auxiliary valve and pump side of the loader control valve. The loader functions are where you show supply/return lines to the loader.

Terminology is going to be important in helping you.

More like this.

 

[rainman4820]

Thank you for the clarification and labeling, I agree this will be helpful to get this issue resolved.

Any additional thoughts on the “control lever for the aux hydraulic valve”. Is this lever in any way related to the hydraulics that currently control the loader function or is it for other auxiliary functions, ie..3 pt lift?

 

[Bob NY]

Thank you for the clarification and labeling, I agree this will be helpful to get this issue resolved.

Any additional thoughts on the “control lever for the aux hydraulic valve”. Is this lever in any way related to the hydraulics that currently control the loader function or is it for other auxiliary functions, ie..3 pt lift?

Thank you for the clarification and labeling, I agree this will be helpful to get this issue resolved.

Any additional thoughts on the “control lever for the aux hydraulic valve”. Is this lever in any way related to the hydraulics that currently control the loader function or is it for other auxiliary functions, ie..3 pt lift?

This your picture.

I believe the lever inside the blue rectangle is connected to the remote valve on the other side of the seat. As Jim said, the hydraulic flow is through that valve to the 2 spool valve on the loader upright. The valve under the seat must be locked in one of the detent positions. If it returns to the neutral position, there will NOT be any flow to or through the valve on the loader. This has nothing to do with the 3 point hitch. That works off from a different pump. Te position and draft levers for the 3ph should near the lever in the picture.

 

[Kevin VA]

Hey everyone,
I’ve got a 265 with the single hookup valve like the one pictured below, and I’d like to convert it to a dual hookup valve such as the other picture attached. Right now my loader occupies the only hookup, and I’d really like to have a free set of rear hookups for other attachments.


Has anyone done this?
Is it doable to convert to dual, even with the loader taking the existing port?
And does anyone know the part number for the dual hookup valve?


Thanks in advance!

 

[Bob NY]

I don't think you can convert the single spool valve to 2 spool valve. You can replace the single spool valve with a 2 spool valve if you can find one.

 

[Kevin VA]

I don't think you can convert the single spool valve to 2 spool valve. You can replace the single spool valve with a 2 spool valve if you can find one.

Yes, that’s exactly what I’m trying to do — but I’m having trouble locating the correct valve.


All of my search results keep pointing me to diverter valves, which isn’t what I’m looking for.

 

[Jim.ME]

Yes, that’s exactly what I’m trying to do — but I’m having trouble locating the correct valve.


All of my search results keep pointing me to diverter valves, which isn’t what I’m looking for.

How are you searching? By description or are you using the Massey Ferguson part numbers for the valve, controls needed for it, and hydraulic tubes needed to convert from the single spool valve to the two spool Auxiliary hydraulics valve?

 

[used red MN]

Yes, that’s exactly what I’m trying to do — but I’m having trouble locating the correct valve.


All of my search results keep pointing me to diverter valves, which isn’t what I’m looking for.

Hello Kevin, welcome to YT! From what I see in the online AGCO parts catalog, you will need the serial number of your tractor to acquire the correct PNs. There are early and late versions of that tractor.