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Replacing belt on Hino eh700 water pump

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    Replacing belt on Hino eh700 water pump

    The previous owner left spare belt Gates 17AI115. It seems that the water pump assembly won't slide back enough to get that belt over the pulleys. There is what looks like a fuel lug which I good remove to gain the needed extra half inch but then would need to Prime the whole fuel system on that engine. I'm sure I saw a post where somebody asked this question and was told to buy a slightly bigger belt but upon searching could find nothing.
    1986 3870 175NA Hinos 450 hurths
    yanked out Westerleak
    mostly admiral driven

    #2
    I have two belt numbers that fit. NAPA 25-22443 and Mitsubishi 9001-45169A.
    Very often the raw water pump is removed from its mount to service the impeller. Don’t remove the fuel lug.
    P/C Pete
    Edmonds Yacht Club (Commodore 1993)
    1988 3818 "GLAUBEN”
    Hino EH700 175 Onan MDKD Genset
    1980 Encounter Sunbridge "Misty Blue" (Sold)
    MMSI 367770440
    1972 Chevrolet Nova Frame off Resto-mod in the garage
    Boating on the Salish Sea since 1948

    Comment


      #3
      I think you might have to completely free the raw water pump to change the belt. That entails removing the tensioner bolt and then the four bolts on the underside of the pump bracket. It's an awkward procedure but once you know where the bolts are and get the feel for them it's not too bad.

      Comment


        #4
        Thanks for the info guys. Gonna order new belts.
        1986 3870 175NA Hinos 450 hurths
        yanked out Westerleak
        mostly admiral driven

        Comment


          #5
          Pete. The Napa belt number you gave worked great. Didn't even have to remove pump as the tensioner let it slide enough to easily get belt on and retention. We'll see what happens on the port eng as I noticed imminent failure. It's belt also doesn't seem as seated and seems to run at an angle.
          1986 3870 175NA Hinos 450 hurths
          yanked out Westerleak
          mostly admiral driven

          Comment


            #6
            If you loosen all four pump bolts, you can probably probably correct the alignment as you retighten the bolts. I noticed mine have a bit of slop that can mess up the alignment.
            P/C Pete
            Edmonds Yacht Club (Commodore 1993)
            1988 3818 "GLAUBEN”
            Hino EH700 175 Onan MDKD Genset
            1980 Encounter Sunbridge "Misty Blue" (Sold)
            MMSI 367770440
            1972 Chevrolet Nova Frame off Resto-mod in the garage
            Boating on the Salish Sea since 1948

            Comment

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