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Go Back   Only Cub Cadets > Cub Cadets > Cub Cadet Engines > Kohler Engines
Reload this Page What does a bad bearing sound like K-series?
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Old 07-31-2018, 09:10 AM
samiam44 samiam44 is offline
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Default What does a bad bearing sound like K-series?
I'm asking..


Somewhere the motor has gotten a metallic sound. It's toward the front and I had assumed that it was the muffler internal baffling or something failed. But after a few more weeks of cutting grass- it developed a front seal leak. I have a seal and home.. thought I'd change it up. But I'm assuming that a bad bearin g will have noticeable play?
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Old 07-31-2018, 09:44 AM
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What tractor is this engine in? Trying to determine if the engine has balance gears.
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Old 07-31-2018, 10:06 AM
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Does it make more of a humming sound?
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Old 07-31-2018, 10:13 AM
J-Mech J-Mech is offline
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Unless the engine has a lot of metal rolling around in it, the big ball bearings on the crank never fail. Usually even on a rebuild, you can use them over. Chances a bearing is out are very, very slim.

A "metallic" sound is kind of indifinitive. Squeek, knock, rattle???? Tim might be onto something with the balance gears, but when they go out, I wouldn't describe it as a "metallic" sound. They will rattle and knock. You either need to post a video to YouTube and link it here, or describe it better. Several things can cause noises. I'd say the seal leaking is coincidental. But, anything is possible.
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Old 07-31-2018, 11:32 AM
finsruskw finsruskw is offline
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Cam shaft end play
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Old 07-31-2018, 12:15 PM
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Cam shaft end play
That’s my vote too.
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Old 07-31-2018, 12:23 PM
J-Mech J-Mech is offline
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Cam shaft end play
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That’s my vote too.
Well, then why wouldn't he describe it as a knock??
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Old 07-31-2018, 01:32 PM
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Unless the engine has a lot of metal rolling around in it, the big ball bearings on the crank never fail. Usually even on a rebuild, you can use them over. Chances a bearing is out are very, very slim.
I had a motor in a 149 that had a bad crank bearing, and a 129 with the same, was always on the PTO end.
Makes a HmmmmmmHmmmmmmHmmmmmm sound.
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