Lubricating the bowl??
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Lubricating the bowl??

  1. #1
    jetboataholic HawaiianJet's Avatar
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    Default Lubricating the bowl??

    What should I use to lubricate the bowl bearings? 90W gear oil or a good marine grease? Which would be better? I don't want to water lubricate because the river it will be run in is too silty I think. The water is always brown, especially in the spring, and it runs through a large portion of the state and picks up a lot of junk along the way. But if I did water lubricate, can it be done with a bowl stuffer installed? Thank you.

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    lol, right..... Devilman's Avatar
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    Regular old 90 wt gear oil in mine.....

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    Senior Member GAWnCA's Avatar
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    Quote Originally Posted by HawaiianJet View Post
    What should I use to lubricate the bowl bearings? 90W gear oil or a good marine grease? Which would be better? I don't want to water lubricate because the river it will be run in is too silty I think. The water is always brown, especially in the spring, and it runs through a large portion of the state and picks up a lot of junk along the way. But if I did water lubricate, can it be done with a bowl stuffer installed? Thank you.
    Is this a Berkeley Jet? If so they call for 90wt oil. From their front page of their web site:

    FAQ: What kind of oil do I use in the bowl of my Berkeley Jet Drive.
    Answer: Straight 90 weight gear oil.

    Also, it don't take much so a quart will last you a while. I think my C bowl took something like 4 or 5 oz, maybe a little more.

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    jetboataholic HawaiianJet's Avatar
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    Yes, it is a Berkeley 12-JC with an AB impeller. Thank you.

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    Senior Member Widetrack's Avatar
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    HJ Stay with oil or grease I have been told don't water lube with a Berk. bowl I have seen it first hand what will happen a new bowl will be in order! I know some guys have sugested it to you! Good luck! WT

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    Super Moderator HammerDown's Avatar
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    Any cheap gear oil (or) even a thick/heavy straight motor oil will be fine...reason > no "gears" inside, just two bushings and a shaft spinning through them.
    Every couple trips out I'll simply flush out the oil in the bowl (hence using cheap lube), it only holds a few oz's.
    *I don't like the idea of grease as it would seem not to flow between the shaft and bushings.
    Last edited by HammerDown; 03-31-2008 at 09:08 AM.
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    B.A.M aka "Black Azz Mike 396_Ways_To_Spit's Avatar
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    Quote Originally Posted by Widetrack View Post
    HJ Stay with oil or grease I have been told don't water lube with a Berk. bowl I have seen it first hand what will happen a new bowl will be in order! I know some guys have sugested it to you! Good luck! WT

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    Senior Member Gravyboat's Avatar
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    Quote Originally Posted by HammerDown View Post
    *I don't like the idea of grease as it would seem not to flow between the shaft and bushings.
    Yep. That's what I was told by someone at MPD. On every jet they've worked on that had grease as a bowl lubricant, it was everywhere other than where it needed to be.

  11. #9
    jetboataholic HawaiianJet's Avatar
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    I'm gonna run oil in it. Easier to clean out too. Just spray a bunch of brake kleen inside. Thanks.

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