1990 Hydra-mac 1850

Discussion in 'Tractors' started by Paulsie, Feb 21, 2007.

  1. Paulsie

    Paulsie LawnSite Member
    Posts: 2

    Sirs,I own the above machine but the crankshaft broke in half. A gentleman @Fergusons informed me that a Isuzu 4Jb1 motor would work.I live in Calgary and the Onan dealer cannot help.Any info or direction would be appreciated.:confused:
  2. accurate machinery

    accurate machinery LawnSite Member
    Posts: 165

    There is a Company in Thief River Falls, MN, Schmalz Industries. The owner eats and sleeps Hydra-Mac, he will know exactly what you should do to repair your 1850. I seem to recall that they came out with the Onan/Cummins engine and then switched over to the Isuzu. I am not sure this number is still good but you could check with information, talk to Keith 218-681-4581 . I worked with the Hydra-mac line in the late 80's they were very tough machines, I am surprised another skid steer manufacturer didn't buy them out. Good luck! www.accuratemachinery.com
  3. Paulsie

    Paulsie LawnSite Member
    Posts: 2

    Thanks for the information,I think Isuzu is is the way to go,I was hoping to get some John Deere input as it is a S.A.E. application.
  4. 1850owner

    1850owner LawnSite Member
    Posts: 1

    Cummins 2300t is a replacement motor, the reason the crank broke is because how the hydraulic pump is mounted. The new cummins motor comes with a pump drive in the block to attach the pump. The side load created by the poly chain belt is what breaks the crank. We had the same issue with our 1850 an put in the 2300 and are having good luck.

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