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Subject: 2N Hydraulics Update

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Jack - Iowa    Posted 10-15-2018 at 19:55:59 [URL] [DELETE]        [Reply] [Email]  
  • 2N Hydraulics Update
  • Pleased to say the 2N is back together and the hydraulics work fine.

    Tim asked HOW I broke the casting.
    As you can see, it has been broken a long time.

    Basically all that gave loose on me was about a 1/8" rim along the upper edge.

    Here is a picture of the mating part:

    And here is the surprise! Once cleaned up, look what was revealed:

    The part has been broken previously and welded!

    bkrsdoz    Posted 10-17-2018 at 10:37:02 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N Hydraulics Update
  • The middle photo shows the story. It was an initial tensile fracture probably caused by a sudden stress(hitting a boulder). You can see the fatigue beach marks coming out of that initial sudden stress crack. Over time, the crack progressed in fatigue fracture while using implements for normal work until the part could no longer support the load. That resulted in tensile final fracture. I do this type of work everyday in the aircraft engine field. Sorry if I bored you with the details!

    Tim Daley(MI)    Posted 10-17-2018 at 13:49:35 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N Hydraulics Update
  • Nuthin' a bit o' duct tape and bailing wire can't fix, right??? : > )


    TPD

    Jack - Iowa    Posted 10-17-2018 at 12:17:03 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N Hydraulics Update
  • Certainly not bored! At 88 I'm still not too old to learn! I've owned the tractor about 20 years. My sister before that but I'm not sure how many years. In all those years there has not been an encounter with a boulder so the initial damage goes way back. Interesting!

    Jack

    Tim Daley(MI)    Posted 10-16-2018 at 06:57:49 [URL] [DELETE]        [Reply] [No Email]  
  • Re: 2N Hydraulics Update
  • Yep, someone hit a really big boulder to do that. Happy for ya to get to root cause, fixing problem, and sharing. I'm thinking there may have been even more damage done.
    Was the pump inspected for cracks, breaks, and welds?


    Tim Daley(MI)

    Jack - Iowa    Posted 10-16-2018 at 07:52:40 [URL] [DELETE]        [Reply] [Email]  
  • Re: 2N Hydraulics Update
  • This tractor has always had the strongest hydraulics of my two. No, I did not drop the pump. Happy to fix the problem and get it back working.

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