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  1. #1
    Gold Member TnWV's Avatar
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    2003 Zetor 4341 w/FEL, 1975 MF 150, 2012 JD X530

    Default MF 150 Oil Leak Repair

    I have mentioned in several other threads that I have an MF150. I don't use it much so I have been neglecting an oil leak for several years, just adding oil each time I want to run it. Recently it has began to leak too much to risk it, literally a quart or two will run out in just an our or two of running it. I decided it was time to tear it down and replace every gasket on the engine and clean it up real good. My first thought was that the front and rear engine seals were the main cuplprits, as well as the timing gear cover, oil pan, and valve cover. Yesterday I used about a gallon of purple power and washed it up real good. After this, I found that the majority of the oil is indeed coming from the front engine seal and the oil pan. It doesn't appear that the rear main seal is leaking, but I'll be replacing it any way while its apart. I also found that the water pump is shot, so I'll be ording one this morning as well. Yesterday afternoon, I managed to get the Hood, bumper, fuel tank, radiator cover, and pretty much everything else off to give me access to the engine. I also got my engine hoist, and jack stands in place and ready to remove the front end so that I can drop the pan. I forgot my phone at the house when I did the dissassembly, so no pictures of that yet. This tractor belonged to my father, and I will eventually do a full restoration (hopefully as good as MasseyWV is doing on his 135), but for now I just want to get it in good operational condition. As is, the Perkins diesel runs very strong, and everything else on the tractor functions very well. I will be purchasing a new tiller in the next couple weeks and want to use this tractor to run it. I don't really have any specific questions for now, but I'm sure they will come as I get deeper into the repair, so I figured I would start a thread to share the experience and collect any advice/tips that anyone wants to offer. I hope to get it all back together within the next two weeks, but we will see how much time I have to work on it.

    Here are some pictures before and after I cleaned it up. You can see on the last picture how much oil leaked out in about 30 minutes of sitting there running, and on the second to last picture you can kind of see how much oil is running down from the front of the engine.
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    2003 Zetor 4341 w/FEL
    1975 MF150

  2. #2
    Super Star Member murphy1244's Avatar
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    Kioti DK-40, MF-135, Ventrac 4500Y

    Default Re: MF 150 Oil Leak Repair

    Nice machine
    Murph ------------

  3. #3
    Gold Member TnWV's Avatar
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    2003 Zetor 4341 w/FEL, 1975 MF 150, 2012 JD X530

    Default

    Thanks Murphy!

    So I got the front split from the tractor this evening and thought I was doing good until I realized I didn't disconnect the big steering rod. I couldn't get it loose for nothing. I got frustrated and quit and didn't think about taking a picture of it. I'll try again tomorrow.
    2003 Zetor 4341 w/FEL
    1975 MF150

  4. #4
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    Default Re: MF 150 Oil Leak Repair

    That's a great looking MF-150 tractor! Repairing the oil leak shouldn't be too difficult, but one has to be very careful when replacing the oil pan gaskets on the Perkins or it can begin to start leaking again.

    Here's a TBN thread created by Farmwithjunk that has many pictures of his restored Massey Ferguson 150 tractor.

    http://www.tractorbynet.com/forums/g...years-ago.html
    .

  5. #5
    Gold Member TnWV's Avatar
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    2003 Zetor 4341 w/FEL, 1975 MF 150, 2012 JD X530

    Default

    Thanks for pointing out that thread Massey. I believe I read some of it a couple of years ago, but forgot all about it. I hope to get the oil pan off this evening, and atleast get to where I can put the front end back on over the weekend. Still have to order a water pump and a couple of more gaskets.
    2003 Zetor 4341 w/FEL
    1975 MF150

  6. #6
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    Default Re: MF 150 Oil Leak Repair

    Quote Originally Posted by TnWV View Post
    Thanks for pointing out that thread Massey. I believe I read some of it a couple of years ago, but forgot all about it.
    It's also very important to get the gasket mating surfaces as clean as possible, and they must be absolutely free of oil or grease. Brake cleaner is great to use for final cleaning.
    .

  7. #7
    Gold Member TnWV's Avatar
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    2003 Zetor 4341 w/FEL, 1975 MF 150, 2012 JD X530

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    Quote Originally Posted by MasseyWV View Post

    It's also very important to get the gasket mating surfaces as clean as possible, and they must be absolutely free of oil or grease. Brake cleaner is great to use for final cleaning.
    I got the steering rod removed this evening and completely removed the front end. Then spent about an hour or so cleaning up the engine. There is much gunk that I am having to scrap, then scrub with a diesel soaked rag then also using brake cleaner. Finally got the front cleaned up. The front main engine seal was completely dry rotted and chunks of the rubber were gone. I can see why it was leaking so bad. I also got the pan supported with a floor jack and all of the bolts broke loose. I'll drop it down tomorrow evening hopefully and continue cleaning everything up.
    2003 Zetor 4341 w/FEL
    1975 MF150

  8. #8
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    Default Re: MF 150 Oil Leak Repair

    Quote Originally Posted by TnWV View Post
    I got the steering rod removed this evening and completely removed the front end. Then spent about an hour or so cleaning up the engine. There is much gunk that I am having to scrap, then scrub with a diesel soaked rag then also using brake cleaner. Finally got the front cleaned up. The front main engine seal was completely dry rotted and chunks of the rubber were gone. I can see why it was leaking so bad. I also got the pan supported with a floor jack and all of the bolts broke loose. I'll drop it down tomorrow evening hopefully and continue cleaning everything up.
    Cleaning them up is a huge pain. I've found gunk engine degreaser works well, and oven cleaner is very effective on the tough stuff.
    .

  9. #9
    Gold Member TnWV's Avatar
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    2003 Zetor 4341 w/FEL, 1975 MF 150, 2012 JD X530

    Default

    Quote Originally Posted by MasseyWV View Post

    Cleaning them up is a huge pain. I've found gunk engine degreaser works well, and oven cleaner is very effective on the tough stuff.
    I've used gunk before, but Auto Zone was out when I stopped in on Monday, so I just got brake cleaner. Never thought of oven cleaner, may have to give that a try.
    2003 Zetor 4341 w/FEL
    1975 MF150

  10. #10
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    Default Re: MF 150 Oil Leak Repair

    Quote Originally Posted by TnWV View Post
    I've used gunk before, but Auto Zone was out when I stopped in on Monday, so I just got brake cleaner. Never thought of oven cleaner, may have to give that a try.
    Oven cleaner works great, but avoid the cheap stuff. Trial and error revealed that Easy-Off foaming oven cleaner seemed to work best for me. Just spray it on and let it sit for 15-20 minutes, then give it a good scrubbing with a stiff brush before rinsing it off with a hose. A secondary wash with warm soapy water will remove any residual oven cleaner which might remain.
    .

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