Noise in upper B3x
07-24-2019, 06:54 PM
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Noise in upper B3x
Just rebuilt a B3x upper and lower. Have a clicking noise in it. It is most noticeable when backing of on the throttle. I have put 50 miles on it since the rebuild but am wondering what I have missed. Any suggestions out there?
woodchop
woodchop
07-24-2019, 08:27 PM
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07-27-2019, 04:03 PM
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woodchop
07-27-2019, 04:33 PM
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I disconnected the shifter and with the engine idling shifted it manually. The drive shifted well. Then pushed the cable one way and the other then revved the engine.... still have the same noise when decelerating. (Sounds like a playing card on bicycle spokes). So still a mystery
woodchop
If so, and you don't have it when idling, then I'm thinking its in the upper drive section
Has the gears been removed and timng marks not realigned maybe?
07-27-2019, 05:38 PM
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How well did you inspect the bearing in the top of the drive on the input behind the yoke? Had a boat through the shop that other marina's put in new u-joints every time... a few of the rollers had flat spots that would almost growl through the transom assembly (u-joint on the way out) and not so much like a playing card while underway.
07-27-2019, 08:35 PM
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I installed both bearings behind the yoke, aligned the timing marks and also installed new races on the tower bearings. The only time we hear the noise is when we decelerate.
07-27-2019, 08:42 PM
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How well did you inspect the bearing in the top of the drive on the input behind the yoke? Had a boat through the shop that other marina's put in new u-joints every time... a few of the rollers had flat spots that would almost growl through the transom assembly (u-joint on the way out) and not so much like a playing card while underway.
