Power steering problem ! Massey Ferguson unknown model

tonyof757

Member
This is the second post on this subject , I don't know if the origional one was poster correctly. Basically I have no power steering and its god awful hard to turn without it . Sorry some of the pics may be upside down I tried to fix it.

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Some of the older Massey Ferguson tractors had a separate power steering pump that had the reservoir tank right on the pump. They did not hold much oil, maybe a quart or two. Look on the on the sides of the motor towards the front. They are driven by the cam gears and can be on the right or left side depending on the engine model.

Earlier MF 135 style, usually on the left side.
cvphoto38773.jpg


A little later style. Common on the MF 180 tractors. These are on the right side.

cvphoto38774.jpg


Then another style that is on the right side of the MF 40 tractors.

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All of these do have a filter inside the reservoir can. You take the bolt out of the end of the reservoir and the can slides off the pump. You can then see the filter.
 
Thank You JD I can't wait till tommorrow morning to go out there and look. What kind of fluid will go in there and also what is this piece it looks like it pushes the linkage steer it ( see the little screw on the top whats that ?
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That is the steering box. The small screw adjusts the back lash in the steering gear. Leave it be. The pipe plug with the square head is to check the box for gear oil.

Your steering system looks like it is a Power assist system. Meaning the manual gear box pushes the drag link with a hydraulic cylinder assisting you moving the wheels.

I am not very familiar with MF industrial tractors. They are often CLOSE to the farm tractors but not exactly like them.
 
i see so that box just helps but does not give it the power. that explains why the hydralic hoses are down at the ram. i did put some oil in that box, i didnt have gear oil just some 10w40 but my steering was already gone before that, there was a time those linkages below the ram used to leak alot . and when they stopped leaking ironically hydraulic oil the power steering stopped working .
 
Your tractor has the same power assist steering that Case used on their wheatland
tractors. From your hydraulic assist cylinder follow the hoses up to the engine area.
The hoses will fasten into a pump at the front of the engine. Check the oil in that
pump reservoir. there is a good chance it needs oil since you said your steering
cylinder quit leaking. Sounds like it ran out of oil. If you need guidance on
repairing the cylinder and the built in control valve there are people on the Case
forum well versed in repairing that steering system. I believe it is a Borg-Warner
steering assist system.
Loren
 
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thanks he're a picture of the pump you described I already looking into that scenario . Not saying I made a difference but I did look. The pump is run by a shaft coming from the front of the motor . it spins . the pump make a little noise i know theres some air in the system although i keep changing the hydraulic oil and looking for leaks. I guess my point is , that pump runs other stuff like the arms and the bucket i guess. so if everything ealse is working how could the pump stop pumping to turn the wheels .unless the line is clogged. now that i have not determined yet. any thoughts more then welcome?
 
Tony the pump your looking at is the hydraulic pump for the loader. It has nothing to do with the steering. The steering is a completely different circuit/system. Like I posted Look on the MOTOR not in front of the radiator. Look at the pictures I posted and see how the Power steering pump is driven by a gear off the cam. Nothing to do with the hydraulic lift pump in the front.
 
(quoted from post at 21:41:56 10/12/19) Tony the pump your looking at is the hydraulic pump for the loader. It has nothing to do with the steering. The steering is a completely different circuit/system. Like I posted Look on the MOTOR not in front of the radiator. Look at the pictures I posted and see how the Power steering pump is driven by a gear off the cam. Nothing to do with the hydraulic lift pump in the front.
ahhh ok thanks JD
 
(quoted from post at 02:24:00 10/13/19)
(quoted from post at 21:41:56 10/12/19) Tony the pump your looking at is the hydraulic pump for the loader. It has nothing to do with the steering. The steering is a completely different circuit/system. Like I posted Look on the MOTOR not in front of the radiator. Look at the pictures I posted and see how the Power steering pump is driven by a gear off the cam. Nothing to do with the hydraulic lift pump in the front.
ahhh ok thanks JD
i posted some more pics you you guys could help me better understand what I have and why I don't have and power steering. some of the things I took pictures of i do not understand what theres things are to put oil in them . all i know is where the gas goes and where the oil goes besides where to put the hydralic oil for the arms and bucket . main thing i'm trying to trouble shoot is how to get my power steering back thanks
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Tony that looks to be the power steering pump there just forward of the distributor.
That pipe nipple with pipe cap is probably where you check and fill the oil.
If you take that cap off clean that area up pretty good so you don't get any grit inside of the pump/system.
Also in that one picture I saw the aluminum plate that has the serial number, and surely the model number on it.
 
(quoted from post at 17:54:02 10/13/19)
Tony that looks to be the power steering pump there just forward of the distributor.
That pipe nipple with pipe cap is probably where you check and fill the oil.
If you take that cap off clean that area up pretty good so you don't get any grit inside of the pump/system.
Also in that one picture I saw the aluminum plate that has the serial number, and surely the model number on it.

I am not sure but I don't think you check and fill the oil for the pump there. I would say the pipe cap is where engine oil might go in since it would be over the pump drive gear. The large hose at center back of the pump is hooked to a tank mounted above, I would guess. The lower hose would be the pressure hose. I wonder if there is a belt driven pump, with its own reservoir, mounted high on the front of the engine, inboard and above the alternator, some had those.
 
(quoted from post at 14:54:02 10/13/19)
Tony that looks to be the power steering pump there just forward of the distributor.
That pipe nipple with pipe cap is probably where you check and fill the oil.
If you take that cap off clean that area up pretty good so you don't get any grit inside of the pump/system.
Also in that one picture I saw the aluminum plate that has the serial number, and surely the model number on it.
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ShakerPrairie Is the arrow in the blue or is it the arrow in the white the power steering pump you speak of ?
 
(quoted from post at 20:33:56 10/13/19)
I ment to say red arrow or white arrow sorry

I'm not ShakerPrairie but your red arrow appears to be pointing at the engine oil filter housing. Your white arrow is pointing at a hydraulic pump. It maybe the power steering well as other hydraulic functions, not supplied by the crankshaft driven (loader) pump. Follow the hose going up from it, you may find a reservoir.
 
thanks jim and everyone who responded , that pimp is supplied by this resovoir that i put hydralic oil in in pic . ( sorry its upside down) I keep it full of oil to the point it can circulate if you will . the pumo even has a cap , i have added oil to that as well . i wonder how much oil you gotta put in that thing to get your steering back ?
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Jim.ME I looked again and I bet you're right about the pipe cap being over the pump gear.
That piece of radiator hose that runs up and down vertical in front of the steering pump (white arrow) must come from the same hydraulic oil tank, and is for the crankshaft driven pump.
So the hydraulic pump and steering pump use the same reservoir?
Makes sense.
 
i got another pump in the front by the radiator that spins off the engine as well . but for now lets focus on this pump. if i have oil in the grey tanks above it feeding the steering pump how can i check to make sure its getting the oil because i got a feeling that power steering pump may not be getting oil. can't i just pour oil in itaht big cap sitting on top of the power steering pump . you see that ?
 
Have you looked at the front of the engine from the other side to confirm there is not a belt driven power steering pump tucked up in there? It would have a reservoir mounted right on it. Look on the other side of the upper radiator hose from the side the tank is on.

ShakerPrairie, I think that vertical hose is the hose between the water pump and power radiator connection. I think at least the left loader upright is used as the reservoir for the crank driven pump.

I can't see enough of the canister, and it's hoses, in front of the brake pedals to guess of its function, i.e. filter or reservoir?
 

Is the cap tucked right under the front of the hydraulic tank, can't really tell in the photos. If so that is the cap for your power steering oil reservoir. It may need oil. The pump should be belt driven.
 
Given the location of that pump it would be gear driven off the gears on the front of the engine. Dumping oil in through that cap you point at would only put it into the engine oil, I don't see it being a reservoir for hydraulic oil.

If you don't have a belt driven steering pump there may be a flow divider further down the output line from the gear driven pump that sends oil to the steering.
 
(quoted from post at 03:29:45 10/14/19) Given the location of that pump it would be gear driven off the gears on the front of the engine. Dumping oil in through that cap you point at would only put it into the engine oil, I don't see it being a reservoir for hydraulic oil.

If you don't have a belt driven steering pump there may be a flow divider further down the output line from the gear driven pump that sends oil to the steering.
the line going to that pump comes straight from the hydraulic tank above the engine .
 
I am referring to the line out the bottom of the pump, not the one from the tank. That bottom line would be pressure from the pump and would go to valves in the system to provide power to operate different things.

Your tractor looks like a Massey Ferguson 303 Work Bull with a 500 loader. Here is a picture from the web. The 406 Work Bull is bigger and has different fenders from photos I find.

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You can access the online parts books for them at: https://apb.agcocorp.com/login.aspx?region=NorthAmerica. At the bottom where it says Guest user click on view books. On the next page enter 303 (for the tractor) or 500 (for the loader), Check the box for Massey Ferguson and you will get a list of models that have 303 in their title somewhere, scroll down to chose the right one for yours. Click on it and you will get the parts book.

Also in the box where you clicked View Books is a link to the AGCO technical publications where you can search and find the Operator's and Service manuals (and Parts Manuals if you want) to purchase as hard copies or different electronic options for your machine.
 
(quoted from post at 17:02:35 10/12/19) Some of the older Massey Ferguson tractors had a separate power steering pump that had the reservoir tank right on the pump. They did not hold much oil, maybe a quart or two. Look on the on the sides of the motor towards the front. They are driven by the cam gears and can be on the right or left side depending on the engine model. My steering pump seems to be the part with the arrow pointing to it. This canister seems to be the last step before hydralic oil gets to the hydraulic pump . Hence the bucket and arms work off the same pump in some way. My question is how do you open this part and clean it if it is the filter ? I thought I could screw it off like a car oil filter but I don't know .

Earlier MF 135 style, usually on the left side.
<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto38773.jpg">

A little later style. Common on the MF 180 tractors. These are on the right side.

<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto38774.jpg">

Then another style that is on the right side of the MF 40 tractors.

<img src="https://www.yesterdaystractors.com/cvphotos/cvphoto38775.png">


All of these do have a filter inside the reservoir can. You take the bolt out of the end of the reservoir and the can slides off the pump. You can then see the filter.
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(quoted from post at 16:56:29 10/15/19) How about posting some photos looking at the front of the engine on the right side,in around and behind the alternator.
i will thanks. i did go out and poke around today . i pulled off some hoses . hydralic fluid poured from every hose i took off to and from the power steering pump. i also checked for pinched hoses. and looked in the weird yellow hydraulic filter container. everything looked good. fluid a little milky also i dipped a stick into the hydralic pump it was dry. i was thinking maybe it need prime i don't know . but i will post more pics tommorrow.
 

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