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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #1  
Old 07-01-2002
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Cutlass bearing

What are the symptoms of a failing cutlass bearing? I am gatting a metallic vibration at certain rpm''s , and also when I motor hard to port on my Catalina 30. No vibrations when the transmission is in neutral. Any input?
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Old 07-01-2002
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Cutlass bearing

I replaced my cutlass bearing this year. Had similar symptoms. As you boat is in the water I guess I would suggest that you send a diver down and have him tug on the shaft. If there is play between the shaft and the cutlass bearing it probably needs to be replaced.
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Old 07-01-2002
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Cutlass bearing





Another possible problem causing this is a worn shaft. I have had to replace shafts on older yachts. After a number of years SS shafts do wear and over the years can wear enough to need replacement. Measure the shaft when you change the bearing.










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Old 07-01-2002
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Cutlass bearing

Another source can be misalignment of the propshaft as boats change shape over time and vibration dampers sag. It may also be a transmission bearing.

Regards,
Jeff
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Old 07-03-2002
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Cutlass bearing

When my cutlass bearing wore out it was accompanied by significant vibrations (felt throughout the hull) at higher rpm ranges. In total there was probably 3/32" play between the shaft and bearing.

Fix it quickly! In my case the transmission burnt out while I was trying to hang on until the end of the season.

Graham
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Old 07-04-2002
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Cutlass bearing

I had exact same symptons. My cutlass was totally worn out, shaft was not true, and my prop was out of pitch. I took the whole lot to a prop shop and had prop re-pitched new cutlass pressed in and bought new shaft. Total cost $230.00.-thomas
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