Thrust bearing
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Thrust bearing

  1. #1
    Senior Member cave's Avatar
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    Default Thrust bearing

    I caught my thrust bearing at the right time. Whats crazy is that I remove my hand hole cover every week and grab a hold of the shaft and try as best I can to see if there is any side to side or up and down play. None was found in previous inspections.

    We were out on the lake when I heard something different. I stopped the boat and started looking around for a something rubbing against the blower belt. Then while I was checking the bilge pump I heard a noise that was different than all the other times I've been back there. I touched the pump at the bearing housing and it was real hot. So I trailerd tthe boat. Pulled the engine and found that the bearing was a bit loose. Looks like I caught it just in time.

    I got just under 2 years on this bearing. I boat just about every other weekend all year long.

    Is that pretty good mileage on a bearing? I run the heck out of the boat. I've tried to be a bit easier on the airing it out in the rough stuff since I broke the crank in Yuma. Still I've been told I run the Fug out of this boat. I did grease it every other time out. I did go a month without greasing it once.


    Oh yea the SS Impellar was fine and so was the wear ring and shaft.

    Just wondering if I should just change it every year. Its not that hard for me to pull the motor. I got that down to a science
    Takin it home

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  3. #2
    Senior Member coonass's Avatar
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    good job find'n that in time I change my bearings ever year ......cause I run the piss outta mine also and it make me feel better .......



    was the thrust the only one that was wore? and where was it worn the cap side or the crank side ?

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    Quote Originally Posted by coonass View Post
    good job find'n that in time I change my bearings ever year ......cause I run the piss outta mine also and it make me feel better ....



    was the thrust the only one that was wore? and where was it worn the cap side or the crank side ?
    Alright, someone that believes in a strong maintenance program.

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  6. #4
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    Quote Originally Posted by cave View Post
    I caught my thrust bearing at the right time. Whats crazy is that I remove my hand hole cover every week and grab a hold of the shaft and try as best I can to see if there is any side to side or up and down play. None was found in previous inspections.

    We were out on the lake when I heard something different. I stopped the boat and started looking around for a something rubbing against the blower belt. Then while I was checking the bilge pump I heard a noise that was different than all the other times I've been back there. I touched the pump at the bearing housing and it was real hot. So I trailerd tthe boat. Pulled the engine and found that the bearing was a bit loose. Looks like I caught it just in time.

    I got just under 2 years on this bearing. I boat just about every other weekend all year long.

    Is that pretty good mileage on a bearing? I run the heck out of the boat. I've tried to be a bit easier on the airing it out in the rough stuff since I broke the crank in Yuma. Still I've been told I run the Fug out of this boat. I did grease it every other time out. I did go a month without greasing it once.


    Oh yea the SS Impellar was fine and so was the wear ring and shaft.

    Just wondering if I should just change it every year. Its not that hard for me to pull the motor. I got that down to a science
    Good catch Cave...

    Wish I could say the same. Mine was so bad, it cost me a complete rebuild, a bowl, shaft, and impeller...

  7. #5
    Senior Member cave's Avatar
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    Quote Originally Posted by coonass View Post
    good job find'n that in time I change my bearings ever year ......cause I run the piss outta mine also and it make me feel better .......



    was the thrust the only one that was wore? and where was it worn the cap side or the crank side ?
    I really cant answer that cause the bearing was just loose enough to have a tiny bt of wiggle when the bowl was removed. I did find a ball bearing in the bilge area and it was from the thrust bearing The boat just didn't feel or sound right.


    Quote Originally Posted by headshothills View Post
    Good catch Cave...

    Wish I could say the same. Mine was so bad, it cost me a complete rebuild, a bowl, shaft, and impeller...
    Been there in my other jetboat. I guess that's why I'm always listening for funny sounds. Live and learn...
    Takin it home

  8. #6
    Super Moderator HammerDown's Avatar
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    Cave...way back Tom Papp(great fella) sold me a new bearing, wear ring and impeller.
    Turned out the 'new' bearing was bad. How I found out was not only because it toasted my impeller/wearing but when I removed the bearing and put it on a simple hand press with a dial indicator >just the weight of my arm made the inside race move .030+
    I sent the bearing back to Tom and he confirmed it was bad...he sent me another ZKL bearing, aggressor imp and wearing. And once again, I set it up for .018/.020 at the Imp. Been that way for sometime now > however if I remove my bowl I too will have a "tiny wiggle" at the shaft.
    <img src=http://www.performanceboats.com/gallery/data/500/medium/06-30-11_1234.jpg border=0 alt= />

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