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  1. #1
    Site Admin Green Hulk's Avatar
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    How-to: Pump Pulling - Wear Ring Swap - Prop Swapping

    Thanks for the info Jarrett!

    Tools you need:

    12mm Allen
    Impeller tool (resembles pump shaft/different for GTX & RXP)
    Bench vice
    3 foot piece of strong pipe to slip the 12mm Allen into for use as pry bar
    13mm socket with extension for venturi (and pump support pm GTX)
    17mm socket with extension for pump housing
    Pair of 10mm open wrentches, sockets or ratchet wrenches
    Small Allen for pump cone removal
    Smaller Allen for trim (RXP)
    Blue and/or Red loctite
    Anti-seize (optional)
    Sea Doo Bearing Grease (only if needed)


    Removing the Pump:

    1. Use 13mm to remove bolts from pump support brace (GTX)
    2. Use 10mm to remove OPAS bolts from OPAS arms
    3. Use smaller Allen to remove pivot bolt from trim arm (RXP)
    4. Don't remove the spring, you don't need to unless you are changing venturis
    5. Use 10mm to remove steering cable linkage
    6. Use 10mm to remove reverse linkage
    7. Use 13mm with extension to remove venturi (use a drill to speed it up)
    8. Use 17mm with extenstion to remove pump housing (again drill, just make sure you go easy as not to damage anything)
    9. Slide the pump housing off the pump shaft and out of the ski


    Changing the Prop:

    10. Remove pump nose cone (either pops off or is threaded depending on year/make)
    11. Put impeller tool in vice facing splines up
    12. Slide pump impeller splines side down on the impeller tool
    13. Use medium Allen to remove three bolts from pump cone
    14. Lightly tap nose cone with rubber mallot until you get some space
    15. Gently rock pump cone back and forth to work it out (Might need a flat head screwdriver the first time, but be gentle)
    16. Once pump cone is removed, you will see the 12mm Allen hole
    17. Put 12mm Allen in this spot and slide breaker bar/pipe down the end of the Allen
    18. Turn counter clockwise to loosen (and clockwise to tighten.)
    19. Loosen the Allen until it gets easy enough to turn by hand.
    20. Take the pump off the vice/impeller tool and use your hand on the impeller and 12mm Allen to spin the prop off the shaft.


    Swapping out wear rings:
    (If you are swapping wear rings, add these steps. If not, just jump to the next section)

    21. Once you get the prop out, take off the rubber pump seal
    22. Pop the whole pump in the freezer for a little while.
    23. Place the new wear ring in there too.
    24. After an hour or two and its nice and cold, take it all out of the freezer.
    25. Grab the damaged (white) wear ring with some channel locks and it will slide right out.
    26. Slide the new one in
    27. Replace the pump seal (and put a little marine grease around it.)


    Putting it All Back Together:

    Now working in reverse from step 20 to 13, replace the prop. You might want to put some anti seize on the prop shaft threads. And make sure to use some sort of loctite when putting the venturi and pump bolts back in. I would recommend blue on the venturi and blue on the pump housing until you find a final prop pitch. Then use red loctite on the pump housing bolts.

    As far as how tight. I do the little bolts just snug and let the loctite do the rest. On the prop, I just lean into it until it stops spinning. But on the pump bolts, I crank the hell out of them. I don't know what the real specs are. I also like to check and clean the seal of the pump housing before putting it back into the ski.

    I don't know that it makes a difference, but I clean the area where the pump housing slides into the pump shoe. Then I put a thin layer of Marine Grease on it to make sure it mates up well. When you go to slide the pump housing back in you may have to lift the shaft coming from the ski to get it to slide in. Once on the shaft, the pump may stop an inch out. This means the prop needs to be lined up on the splines. I usually just back it up a hair and reach over the top of the pump with my fingers and turn the prop slightly. I just repeat that process until it successfully slides flush with the mounting points.

    Then start at step 8 and work backwards:

    8. Use 17mm with extenstion to tighten pump housing (again drill, just make sure you go easy as not to damage anything)
    7. Use 13mm with extension to tighten venturi (use a drill to speed it up)
    6. Use 10mm to tighten reverse linkage
    5. Use 10mm to tighten steering cable linkage
    4. Don't remove the spring, you don't need to unless you are changing venturis
    3. Use smaller Allen to tighten pivot bolt from trim arm (RXP)
    2. Use 10mm to tighten OPAS bolts from OPAS arms
    1. Use 13mm to tighten bolts from pump support brace (GTX)[/u]


  2. #2

    Join Date
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    Awesome This really helps out.

  3. #3

    Join Date
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    Quote Originally Posted by Jarrett
    These are also the steps for swapping wear rings as well. Once you get to step 20, then do these additional steps to replace a damaged wear ring:

    21. Once you get the prop out, take off the rubber pump seal
    22. Pop the whole pump in the freezer for a little while.
    23. Place the new wear ring in there too.
    24. After an hour or two and its nice and cold, take it all out of the freezer.
    25. Grab the damaged (white) wear ring with some channel locks and it will slide right out.
    26. Slide the new one in
    27. Replace the pump seal.

    At this point start reversing the prop swap directions as stated above.
    Cool, never thought about the freezer ting mon.

  4. #4
    Resident Jicky Jack Jeff C's Avatar
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    On step 18, it is counter clockwise to loosen up the prop nut. Just changed mine last week....

  5. #5
    Is the impeller removal tool for a RXP a must have item for swaping props or can you use something else or get by without it

  6. #6
    EZ Dock of Long Island Shibby1485's Avatar
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    it's a MUST HAVE

  7. #7
    Ok, I noticed my buddies GTX impeller removal tool is 12mm, what size is the one for an RXP/RXT

  8. #8
    I'd like to know if I have the right size tool at my house already than have to order one and wait a week for it, then find out I already have the same thing.

  9. #9
    GRNGOBLIN's Avatar
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    its 23 mm spline tool, not something in the average tool box, bigger than the old one for xpl etc

  10. #10
    daverxp4's Avatar
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    just baught the tool from ppg and an extra wear ring just in case my dealer has no wear ring in stock neither did riva i guess its the riding season and i have an extra brp new nose cone just in case i will have no down time and swap it with my stock prop.

    any place i can find also pictures i can print out like the easy step by step riva instalations?

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