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  1. #41
    Bronze Member MitchellB's Avatar
    Join Date
    Jul 2012
    Posts
    70
    Location
    Greensboro, NC
    Tractor
    1958 861 Ford Powermaster Diesel & 1949 Ford 8N

    Default Re: 861 diesel problems

    What is the TOB?

  2. #42
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    47,883
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: 861 diesel problems

    throw out bearing.

    always good to replace it anyway.. but in this case.. it's probably damaged anyway.
    souNdguy

    sent from my NOKIA LUMIA

  3. #43
    Bronze Member MitchellB's Avatar
    Join Date
    Jul 2012
    Posts
    70
    Location
    Greensboro, NC
    Tractor
    1958 861 Ford Powermaster Diesel & 1949 Ford 8N

    Default Re: 861 diesel problems

    TOB Throw Out Bearing. OK, I should have guessed that one. Brain must have seized up. While the surface is not real smooth, the thrust bearing seems to be OK, but I don't know what the surface of a new one would look like. It spins freely and is not loose, so I hope to be able to save that and just put new screws into the clutch fingers.

    Got to check on cost. My budget is tiny. While I'd like to do a complete rebuild, mainly I just want to get it up and usable. I took the clutch off today and removed the hydraulic drive gear on the end of the cam that sheared teeth with the pump. The end of the cam looks OK and the block. It did shear off the four 1/4" bolts that held the gear on the cam. I may be able to easy-out the old bolts, or I do have a used cam I bought (for the gear) I can replace it with. I got to hunt up some bolts to mount the engine on my stand and look for new bolts to use on the clutch fingers.

  4. #44
    Bronze Member MitchellB's Avatar
    Join Date
    Jul 2012
    Posts
    70
    Location
    Greensboro, NC
    Tractor
    1958 861 Ford Powermaster Diesel & 1949 Ford 8N

    Default Re: 861 diesel problems

    Danged if New Holland ain't proud of their Ford parts. The little 5/16" x .65" clutch bolt that engages the Release Bearing is $15 each and I needed six of them. When I asked about a new 2-stage clutch for it they wanted $1689!!!!!!!!!!! Scares me to think what shop labor would cost me. I found a new clutch on ebay for $355 that includes a new release bearing, the small bearing and an alignment tool that I ordered a few minutes ago. It's hurting my pocketbook, but I really don't want to split this tractor again anytime soon if I can help it.

    I got the engine on a stand today and pulled the oil pan. I don't see anything else damaged inside, but I'd still need to pull more parts and measure be sure it is within specs. I'm still concerned as to what caused my sudden spitting/sputtering overheating engine that occurred right after the hydraulic pump shaft snapped and pump drive gears failed. Any guesses?

    Should I pull pistons/rods and measure/check rings and bearings?

    Is there a way to check oil pump function before I remove it or after?

  5. #45
    Epic Contributor Soundguy's Avatar
    Join Date
    Mar 2002
    Posts
    47,883
    Location
    Central florida
    Tractor
    ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC

    Default Re: 861 diesel problems

    i'd do a compression test before rebuilding, and observe oil pressure too.


    PS. NH wants 17$ each for pushrods for those red tigers!
    souNdguy

    sent from my NOKIA LUMIA

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