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  1. #1
    Click avatar for tech links/info, donation request K447's Avatar
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    Arrow Cooling water tubes, o-rings, Poor sealing to pump base and hull?

    Today I find that the plastic cooling water tube 5432269 (the tube that runs alongside the jet pump to deliver water to the cooling system) on our MSX 140 is damaged at the hull end.

    Is it just me, or do these things generally seal poorly at the pump base? The o-ring 5410735 on the forward end of the water tube is often not present when I inspect a machine, or if I install one, it does not seal well to the pump base.

    There seems to be no proper groove for the o-ring to seat into and it is easy for the o-ring to simply squish outwards when the pump nozzle presses on the far end of the tube during bolt torquing.

    Does anyone have a better way of sealing these tubes to the hull, other than simply stuffing the opening into the hull with sealant?

    Since I don't have spare water tube on hand, I am either stealing one from the SL900 ( which I don't want to do) or I am on the hunt for someone with a spare that is local to me.

    The cooling tube I removed has lost the entire plastic ridge that would support the forward o-ring against the hull. And of course the actual o-ring was nowhere to be found, just lots of sealant gluing the thing into the hole in the hull.


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    Click image for larger version. 

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  3. #3
    Click avatar for tech links/info, donation request K447's Avatar
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    Anybody have a spare of the older 5131545 metal cooling tubes?

    Remind me; other than the special twisted wedge jet pump version, how many different lengths of cooling water tube are there? What are the part numbers and lengths?

  4. #4
    Moderator beerdart's Avatar
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    The water tube through hull is sealed by the square seal that is sandwiched between the pump mount and the hull. The exterior o-ring is only there as a spacer to keep the nozzle end seated I have had to add or remove the o-rings depending on wedge used.
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  5. #5
    SPEED KILLS, BUT YOU GET THERE QUICKER Keddano's Avatar
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    Keith, I have a extra plastic one I can send you. Just shoot me a address. If you want I can swing by BDI Inc and order a dozen O Rings to toss in with it.

  6. #6
    Moderator beerdart's Avatar
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    5411107 seal,water pipe

  7. #7
    Click avatar for tech links/info, donation request K447's Avatar
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    What service manual is that diagram from? Part number?

    The diagram you posted is the only one I have seen that actually shows another seal forward of the o-ring. All the online MSX diagrams omit that item, and my 2003 MSX 140 service manual also does not show it.

    Is there a part number for that square seal? Talk about a hard to replace item!

  8. #8
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by beerdart View Post
    5411107 seal,water pipe
    Interesting that the Polaris parts cross reference shows that part number present up until 2002. I was looking at 2003 and 2004 diagrams, where it is not listed

  9. #9
    Click avatar for tech links/info, donation request K447's Avatar
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    From the 2002 Virage TXi Propulsion online diagram

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  10. #10
    Click avatar for tech links/info, donation request K447's Avatar
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    Click image for larger version. 

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    This is the damaged water tube.

    Not impressed with the durability of the molded plastic shoulder. This water tube has never been removed before now and I am careful to not stress the tube when the pump is removed.

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