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Impeller Change GT40

rodltg2rodltg2 Posts: 1,051 Crazy Baller
Anyone have a good step by step process to change out impeller? thanks !

Comments

  • PBDPBD Posts: 190 Baller
    It's pretty intuitive.

    Remove the housing from the waterlines

    Remove the 3 screws that hold the cover on the housing

    Pull out the impeller noting which way the vanes are curved

    Put in the new impeller twisting it in so the vanes on the new impeller are the same direction of the original

    Clean the housing cover to remove any debris

    Put it all back together making sure you don't twist or tear the gasket

    Reinstall the housing on the waterlines

    The whole process should take less than 15-20 minutes.

    Best performed on a cool engine.
  • WishWish Posts: 7,260 ★★★Triple Panda Award Recipient ★★★
    edited July 2014
    @PBD what?.?.? No O-ring!.?. Highly recommend removing entire pump from motor and doing the job on the bench. WAY easier. Makes O-ring and lining up bolt holes 1000x easier. Do pay attention to directions of blades as well as the direction to which the entire pump is mounted. It can be put in upside down and run backwards. Curse Sherwood for making that even possible. There is a drain plug on pump housing itself. That drain plug (screw) faces the motor when pump is reinstalled.
    >>> 11.25..a different kettle of fish. <<<
  • east tx skiereast tx skier Posts: 595 Solid Baller
    Rod, get a paint pen and make a "this way up" notation on the side of the pump. Also, make a mark across the edge to make it easier to line up the two halves with the plate that holds the o-ring gasket. As with anything in life, lube helps. Good luck.
    Perpetual Longline Baller. Tyler Ski Club, Tyler, Texas.
    My real name is in my profile.

    www.tylerskiclub.com
  • Pat MPat M Posts: 565 Crazy Baller
    I would check PlanetNautique.com. I found a great step by step direction and it worked great. I'm not the most mechanically inclined and it was easy for me.
  • jackskijackski Posts: 263 Baller
    east tx skier has it right, get some lube on there (not oil or grease) cheap Vasoline works well for impellers and switches.
    Jack
  • PBDPBD Posts: 190 Baller
    @wish isn't an O ring a gasket?

    You've got all the parts there so its pretty intuitive.
  • WishWish Posts: 7,260 ★★★Triple Panda Award Recipient ★★★
    @PBD yep, same thing. Guess I read you post to fast and was lookn for O-ring. Ooops
    >>> 11.25..a different kettle of fish. <<<
  • east tx skiereast tx skier Posts: 595 Solid Baller
    edited July 2014
    On the Johnson pumps, there is a white gasket that covers a large portion of the surface of the access plate. It is certainly a case of semantics, but the seal on the Sherwood pump is an o-ring. I know Rod has spent a fair amount of time dealing with Indmars, and the impellers that fit those pumps often come with an o-ring and a white gasket. So it's not a bad idea to distinguish between the two so he isn't wondering why there is an o-ring, but no white gasket in his PCM impeller kit.

    Also, here is the step-by-step for changing the impeller on a PCM Ford marinization.

    aquaskier.com/articles/impeller_replacement.htm
    Perpetual Longline Baller. Tyler Ski Club, Tyler, Texas.
    My real name is in my profile.

    www.tylerskiclub.com
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