Massey Ferguson 35

Drop a comment with your email, and i will email a link to the manual to you as soon as possible
the Hydraulic system can be found under section L in manual

My grandfathers old Massey Fergusson 35 has worked without any real maintence since he bought it back in the 1960s,

father got the block welded after it stod outside one winter without anti-frost in the water, anyhow, a couple of years back the hydraulics didnt go down, lifted to the top and stayed there.

it has been standing for a couple of years, a few minor atempts to fix, but nothing serious. this summer it was time.

found a workshop-manual, service manual whatever one chooses to call them, it helped me a lot in doing this operation.

Drop a comment with your email, and i will email a link to the manual to you as soon as possible
the Hydraulic system can be found under section L in manual

some people said something about the linkage popping out, couldnt find any problem there, and honestly, i didnt do any of these disconecting linkage etc that people kept talking about who supposedly knew a lot about it. so dont worry if you dont find anything to disconnect.

Finding the problem:

removed the cover/dipstick cover on the right side of the tractor, and couldnt see any disconnected linkages or problems, tried finding a problem and drained the “gearbox” partialy and managed to get my hand down and feel around, i aimed for the controlvalve to see if i could find it, and figure out how it was supposed to behave, something that seemed reasonable after finding this fault table for the mf35 hydraulics in the service manual

hydraulic-system-fault-mf35

i found the control-valve thing that “sticks out” of the pump, and yep, it didnt push out at al if i could find it at al, (rested inside the pump)

so of we go and start dismantling everything and try to get the hydraulicpump out.

the servicemanual linked earlier was very helpfull with that, it is quite straightforward to be honest.

  • remove seat
  • remove any dust so you dont get that down in the transmission/hydraulics
  • drain the hydraulic oil

and in the next step of the service manual i stumbled upon something that later left me showered in hydraulic oil…
if you remove the “oil transfer cap” and with that the standpipe, any sudden moves with the arms at the back of the tractor might result in a 3 meter high fountain of hydraulic-oil, so dont remove the transfercap untill you are actually going to lift the cover.
or perhaps, remove it and lift and lower the arms a few times so you get al oil out of the “piston”, if not, you will probably get the same shower i did, but when fighting with the god-awfull heavy cover

  • the cover is a heavy peace of metal, so you better get a neighbor or another person to help with that.
  • after that the service manual is pretty straightforward..
  • i didnt figure out what they meant by 3 screws that secures the PTObearing at the rear of the housing, turned out it was the rear of the whole housing and not just down the hole i looked at the hydraulicpump, it is at the acctual rear of the tractor.

MF35 hydraulics (1)

empty housing without anything, looking in from the right of the tractor, i managed to get the pump out without removing the controllever for the PTOshaft, but it might be a good idea, it shure was something that got me mad. but it helps to be able to move it back and forth to…

i perhaps did it the wrong way with another thing to…

when i removed the pump, i got the splitpin and the “front coupling collar” loose with the pump still in place, and managed to wedge the pump out, it was much easier the other way around when i tried to reinstall the pump, first i did it the way i had removed it, but changed tactics, put the frontcoupling collar in place, aswell as the split pin, and “just lifted the pump down” so try removing it first without loosening that.

MF35 hydraulics (8)

MF35 hydraulics (7)

what i missed to remove, loosen these three and you will be able to move the whole shaft backwards, nothing i would have found if not for the Service-manual, and even then i had trouble figuring it out.
MF35 hydraulics (2)

missed to take some pictures, this is the pump put together, i removed the filter, and fixed the controlvalve spring witch has rusted away, and the snapring supposed to keep it in place i couldnt even find. i reused the broken controlvalve spring, got a new snapring and assembled it, about 1/4th of the spring lenght was broken/rusted of, but the controlvalve had quite a lot of push anyhow when i testfitted it and i was certain that it would work anyway.

MF35 hydraulics (3) MF35 hydraulics (4)

to the right you can see the part of the spring that broke of, a little to the right you can see the hole where the snapring holds the spring in place, with a little extra help from a washer i got in there…

MF35 hydraulics (5)

a little extra sealant, according to the Servicemanual, one is supposed to get the PTO shaft, and front coupler in place of the hydraulic pump before getting these in, and to start with the left, (witch has a larger hole to help with alignment)

MF35 hydraulics (6)

go in from the sides of the housing and keeps the pump from rotating.

MF35 hydraulics (9)

picture from above, everything in placeMF35 hydraulics (10)

just to lift in place, get the arms on the right side of the lever that moves the Controlvalve (doable if it is lifted in aslong as you dont have any bolts in place…

at the far left of the cover in the picture above is a nut that holds the spring thingy, this moved under the edge of the housing and was the only thing that hindered me from lifting the cover of, figured it out, moved the cover 1.5cm back, and straight up….

mf35 arms (1)

mf35 arms (2)

these arms took some time to fix, many years standing still, and decades without maintance, the was rusted stuck, sledges, blowtorches and loads of sweat they were loose, and i could lift the cover, upon assembly i took the time to acctualy get the mechanism to work aswell as the arms moving freely.

 

problem, sticking implement that wouldnt lower:
a transmissioncase full of water got the snapring and spring so rusty they broke of, without them in place, the arms will not lower.

today the tractor was started and roled out of the workshop by its own, with perfectly working implement…

leave a comment if you have any questions or any extra information that i might have missed..

cheers

 

20 thoughts on “Removing hydraulic pump MF35, sticking implement, controlvalve problem”

  1. Please
    Would you be so kind as to send the Link to workshop manual; I also have problems with hydraulics not working.
    Regards,
    Andrew

  2. Im having issues with my 3 point hitch not working. Took cover off, had everything looked at under the cover and fixed. Started tractor after putting it back on and moved levers around and nothing.

  3. Hello from Australia!
    I have four MF tractors (all diesels) here and am about to begin restoring or refurbishing. Two – a 35 & a 135 – were my late father’s when we were dairy-farming whilst I was growing up. Another is a MF40 loader I bought about five years ago, put liner kits in the 3Cyl Perkins diesel, repaired a couple hydraulic problems, brakes and minor leaks – reliable as the morning sun, just like our 135 – I use them both frequently. The fourth is my best mate’s 35 copperbelly – 1956 model – engine runs well, but needs tractor more work yet. Dad’s 35 needs total restoration job (has not been used for 30 years) but it was his first tractor, and will be looking like new one day soon. Lots of fond memories from hundreds of hours on those two!
    We must have a couple common interests, because I’ve worked for over 20 years on MBs, own several, of which three are family daily-drivers.
    I will spend some time reading your site – looks very interesting.
    Would you be so kind as to send me a link as well? Then I will at least have some settings and other specifications to refer to.
    Cheers, and thank you.
    Pat.

    1. Sounds like fun projects, and most certainly i will send you the documents, or rather a link for you to download them (to big for common email attachments)

      If you would like to you could always either send me pictures and information and i will put it up here for you, or if you feel like it, id make you an account for you to post yourself :)

      I mostly fix with old Mercedes-Benzes and found quite a lot of knowledge to be missing online for my inquieries, and thus created this site.
      It has spilled over to old MF tractors, aswell as old Volvo trucks. so it is more of a “what i am fixing with right now site”

      Cheers
      /Linus

  4. hello ,you discribed my exact problem . my arms will not go down. can you provide a copy of said manual or a link to it thank you

  5. Thank you so much very informative really helped me out! Could you email me the shop manual? Thanks

  6. I would be very appreciative of the shop manual. I’ve been to the local Massey Ferguson dealer, they advised that “part out” my old ’55” Greenbelly”. I have time to work on the old tractor plus ir gives me something to do in retirement.

    1. That would be sad, dont part it out :/ email sent, and hopefully you will get her/it up and running :)
      And that sounds like a pretty good thing to do during the retirement :)

      best of luck
      /Linus

  7. Hi Linus , great pictures . Could you please send on the link for the manual . Keep up the good work . Thanks

    1. Email on its way, went throu about 500 posts with spam here, and found yours and others somewhere in the middle, so sorry about the delay.
      Hopefully the “math captcha” will solve the spam-problem in the future.
      /Linus

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