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  1. #1
    Hydrotherapy's Avatar
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    pump bearing oil

    removing stock grease from bearings in pump to change to oil, firstly can anyone recommend a good weight gear oil to use.
    Instead of drilling and tapping pump cone which i suspect may cause turbulence as the water exits I have decided to remove pump unit and cone and fill with oil in the upright position.
    How much oil is required for sufficient lubrication for both bearings when filling in cc's.
    Any idea of standing time to allow oil to reach rear bearing and fill the void in between bearings.
    p.s How was the original grease lubricating the rear bearing as i have packed the cone bearing several times and not given much thought to the other.


  2. #2
    txgp1300r's Avatar
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    the 05 pump cone is thick , about 1/4 inch , drill and tap for a 1/8 npt, use allen socket brass plug, im running amzoil rear end lube 75/90 , some people mix greese and rearend lube to make a runny paste.....i just use the gear lube...been ok for one full summer...

  3. #3
    Hydrotherapy's Avatar
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    Quote Originally Posted by txgp1300r View Post
    the 05 pump cone is thick , about 1/4 inch , drill and tap for a 1/8 npt, use allen socket brass plug, im running amzoil rear end lube 75/90 , some people mix greese and rearend lube to make a runny paste.....i just use the gear lube...been ok for one full summer...
    thanks dave but cant get of 1/8 npt brass plugs here and forgot to order one last week when island sent my stuff through..
    so have to do the hard way...
    any idea how much oil you put in through plug hole and i can judge how much that way...

  4. #4
    steach's Avatar
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    Salt,
    I dont think you'll have enough oil. When the nose is up moving forward the oil will be forced to the cone leaving the bearings dry.

    If you can find a different size plug just drill & tap for that size. I used an extra seadoo cone plug(1/8 npt) cause I had one. If you have a Doo dealer around they should have one.

  5. #5
    Hydrotherapy's Avatar
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    Quote Originally Posted by steach View Post
    Salt,
    I dont think you'll have enough oil. When the nose is up moving forward the oil will be forced to the cone leaving the bearings dry.

    If you can find a different size plug just drill & tap for that size. I used an extra seadoo cone plug(1/8 npt) cause I had one. If you have a Doo dealer around they should have one.
    thanks so the seedoo's have a plug in nozzles...any idea what year/model..??

  6. #6
    SpeedJunky's Avatar
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    Just curious but why is this being done?
    Is the OEM grease insufficient or is there a performance gain to be had by doing this.

  7. #7
    Hydrotherapy's Avatar
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    Quote Originally Posted by SpeedJunky View Post
    Just curious but why is this being done?
    Is the OEM grease insufficient or is there a performance gain to be had by doing this.
    hi speed..took pump out and noticed how bad it was held back by the grease while holding the (shaft) the stator only just span once..
    hot air gun and a bit of time to melt old grease out and good lube and same spin goes round 5-6 times...
    and the stock grease cant in my little mind get to the rear bearings and the blob in cone is only good for rear bearing....
    dont think i will gain anything but it cant hurt either...

  8. #8
    steach's Avatar
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    Quote Originally Posted by saltygpr13 View Post
    thanks so the seedoo's have a plug in nozzles...any idea what year/model..??
    Any two-stroke models after '95 (maybe before that as well)

  9. #9
    steach's Avatar
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    A few tips:
    1. If using a hand drill use a bit 1/32" smaller than recommended to counter the natural wobble.

    2. Drill & tap at an angle that will put the plug flush w/ the cone.

    3. Dont tap too deep. Tap, insert plug to check, tap deeper if needed.
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  10. #10
    My son (mohawk man) jeffsntx's Avatar
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    Quote Originally Posted by steach View Post
    A few tips:
    1. If using a hand drill use a bit 1/32" smaller than recommended to counter the natural wobble.

    2. Drill & tap at an angle that will put the plug flush w/ the cone.

    3. Dont tap too deep. Tap, insert plug to check, tap deeper if needed.

    VERY good tips. Some people dont realize the way a NPT fitting works. A NPT fitting is tapered, therefore the deeper you tap the hole the bigger it is.

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