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  1. #1
    New Member
    Join Date
    May 2012
    Posts
    17
    Location
    fallston,maryland
    Tractor
    1958 JD 620,JD 410 backhoe,scotts L2548

    Default 620 manifold gasket

    For some reason the shop book for my 1958 620 talks about removing the head in discussing the exhaust manifold removal. I know that sometimes the procedures are moving forward in removal of more parts than is necessary because it is getting on to other areas. I hope to just remove the carb, intake manifold and exhaust manifold, without touching the head. Then replace the gaskets. My dad seems to remember getting the exhaust manifold off before, without touching the head.....Any one with experience please give advice... Of course we will find out when we get into it, but this seems to be a great place for info...
    Attached Thumbnails Attached Thumbnails 620 manifold gasket-p1010031.jpg  

  2. #2
    Bronze Member
    Join Date
    Oct 2012
    Posts
    75
    Location
    Windham
    Tractor
    John Deere 70

    Default Re: 620 manifold gasket

    Unless your 620 is something very unique you can get the manifolds off as a unit leaving the head bolted to the block.Look the flanges in the head over real good even drag a straight edge over the ports.If not perfectly flat the new gaskets wont last long.

  3. #3
    New Member
    Join Date
    May 2012
    Posts
    17
    Location
    fallston,maryland
    Tractor
    1958 JD 620,JD 410 backhoe,scotts L2548

    Default Re: 620 manifold gasket

    OK,thanks will check out the head.....I have new bolts and gaskets...Thanks for your answer, that is what i was looking for.

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