How often do I need to replace my cutlass bearing? - Page 2 - SailNet Community
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post #11 of 23 Old 01-28-2013
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Re: How often do I need to replace my cutlass bearing?

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Originally Posted by itsaboat View Post
Not to hijack a thread, but to play the counter argument, my cutlass bearing is tight. I mean so tight I can hardly turn the prop by hand in neutral. It's not new either. It came with the 1985 boat. We replaced the stern tube on last haulout and I had to hammer the prop shaft (with a wood block as a buffer) to get it back up to the flange.
Should I just motor around until it wears some? I'm a lake sailor with an easy in and out of the slip an dont run the engine much. Does rubber swell over time?
A couple of things come to mind.
1. Are you sure it's the cutlass bearing? It's possible that the stuffing box is too tight.
2. Are you sure that the engine is aligned properly? This could cause the bearing to bind.

I'm sure there could be other reasons. Hopefully someone else can chime in.

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post #12 of 23 Old 01-28-2013 Thread Starter
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Re: How often do I need to replace my cutlass bearing?

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The cutlass bearing was only $75
Now I feel better. Really? A boat part for under a grand??? Sweeet

If that's the case I'll replace it. It's not a part I've replaced before so I'll learn something new and not spend too much. Although, fixing something before it breaks is really not me....

Are there types or brands or do I just get one from defender? Is it better to get rubber or nylon? Are the specific to the boat or just shaft diameter?

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post #13 of 23 Old 01-29-2013
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Re: How often do I need to replace my cutlass bearing?

MedSailor - I forget why, but I did a search for cutlass bearing replacement process. Here's a nifty tool that looks interesting:

I have no affiliation with the seller, just thought it was cool.

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post #14 of 23 Old 01-29-2013
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Re: How often do I need to replace my cutlass bearing?

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Originally Posted by jimgo View Post
MedSailor - I forget why, but I did a search for cutlass bearing replacement process. Here's a nifty tool that looks interesting:

I have no affiliation with the seller, just thought it was cool.
For $395 to get just the adapters for your own shaft, this tool could pay for itself over time. Split it with a buddy and it would pay on its first use. Use yours to help a buddy and you could make your investment back in beer.


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post #15 of 23 Old 01-29-2013
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Re: How often do I need to replace my cutlass bearing?

I had the cutlass bearing replaced after only 2 years from when the boat was brand new. The yard manager came by at haul out and grabed the prop and said there was some play in it and while I had a hard time seeing any play I told him to go ahead and replace it since the cost was under $100 if I remember right. I was not there to watch the replacement, but I don't think he removed the shaft. Not sure how it was done since there is no strut involved plus there is no clearance to use that tool in the above video. It's probably time to replace it again since that was 20 years ago.
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post #16 of 23 Old 01-29-2013
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Re: How often do I need to replace my cutlass bearing?

I just replaced mine. The sound of a bad bearing is kind of like a drumming - if you here that it is past time. I had about 50 thousandths inch play in it. I would guess that it should be changed any time there is play. I suspect once the play starts it will wear quite quickly. System is much smoother now.
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post #17 of 23 Old 01-29-2013
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Re: How often do I need to replace my cutlass bearing?

Med,

The relative difficulty in replacing the bearing will depend a great deal on where the bearing is located.

If it's in a strut, then things are much easier than if it's in a deadwood mounted shaft log -- it's a question of access to the forward end of the bearing in order to press it out.


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post #18 of 23 Old 01-29-2013
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Re: How often do I need to replace my cutlass bearing?

A friend who is responsible for tug repair with a large towing company told me that they replace the cutlass bearing every time a tug is hauled. The cost of the bearing is so cheap compared to the cost of the haul that it doesn't make sense to not change the cutlass bearing. On the other hand, he undoubtedly factors in loss of use when analyzing the economics. You may not.
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post #19 of 23 Old 01-29-2013
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Re: How often do I need to replace my cutlass bearing?

As stated ease all depends on where the bearing is. Ours is in a strut. It requires that the shaft be pulled out. The shaft clearence with the rudder in is .33 inches so we were lucky we didnt have to have the rudder dropped. Oours came from Buck Algonquin

http://www.buckalgonquin.com/pages/P...ring_page.html

The part itself is inexpensive and relarted to shaft size. If you are having the shaft removed its a no brainer to replace the bearing no matter how old it is IMHO.

Dave


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Last edited by chef2sail; 01-29-2013 at 05:47 PM.
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post #20 of 23 Old 01-29-2013
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Re: How often do I need to replace my cutlass bearing?

Well....... this thread created some work. I had been suspicious of my cutlass bearing but now I'm really suspicious. I think it's time to change it out.
I'm assuming it's a press fit?
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