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Old 06-25-2021, 12:26 PM   #21
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Just because a cutlass makes a noise, that's not the reason to replace it. Wear is what should be considered.

I have had noisy cutlass bearings, not sure a loud screech is one description...that might be tough for the one that's underwater..... does a twin GB have drive trins with upper cutlass bearings like a single with long shaftvlog tube?
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Old 06-25-2021, 12:30 PM   #22
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Thanks for all the responses. I am going to replace the cutless bearing. Does anyone have experience doing that?
Lance, is Jefferson Beach Marina still in operation? Might be a good place to start. There is or was a working marina near the water works on Jefferson Ave.
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Old 06-25-2021, 12:33 PM   #23
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They are a bitch to get out.

There are tools you can build to pull then out but you can also saw them lengthwise and pull out with pliers, as below:
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2006-11-11 16.15.22.jpg  
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Old 06-25-2021, 03:01 PM   #24
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Thanks again. I think The cutless bearing closest to the engine is bronze?? and is in housing that contains the shaft flax seal also. From a drawing I have it looks like the whole housing is bolted to the shaft tube??
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Old 06-28-2021, 01:10 PM   #25
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We had a similar thing happen on our older Hatteras when departing from San Jose del Cabo just after pulling out of the slip. Fortunately there is a very good boat yard about a half a click from the marina. It sounded like a cutlass bearing. Got the boat hauled and it turned out that the set screws that hold the cutlass bearing on the intermediate strut had corroded away and the entire cutlass bearing was spinning in the strut. obviously brass spinning against bronze strut made a really high pitched sound. Decided to change all 4 cutlass bearings while out. Had to re align shafts and do a sea trial. The yard did a beautiful job. If that had happened a 100 miles up the line out in the middle of nowhere it could have gotten ugly. Good thing we heard it pulling out of the slip.
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Old 06-28-2021, 03:08 PM   #26
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Thanks for all the responses. I am going to replace the cutless bearing. Does anyone have experience doing that?
Yes, my right hand cramped from writing a check to the boat yard that replaced 6 bearings on my boat.
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Old 06-28-2021, 03:57 PM   #27
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Greetings,
Mr. l. Have you definitely determined that the noise IS the cutlass bearing(s) and completely eliminated other possible sources? It could rapidly become quite expensive changing parts because "it might be".
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Old 06-28-2021, 04:13 PM   #28
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Greetings,
Mr. l. Have you definitely determined that the noise IS the cutlass bearing(s) and completely eliminated other possible sources? It could rapidly become quite expensive changing parts because "it might be".
It might be worth a few bucks to take a 'knowledge' person or perhaps a surveyor out for a ride and ask their opinion?
Start with an open ended question. "What do you think the source of that noise is?" Dont plant the answer in his/her mind. If you say, "Do you think that is caused by......?" Their response more thank likely will be, "Could be" or "Maybe."
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Old 06-28-2021, 05:11 PM   #29
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Thanks all.. I am going to have the boat pulled and all bearings checked and replaced if necessary. I want to be sure that everything below water is good. If they find nothing at least I know under water stuff is ok.
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Old 06-29-2021, 02:08 AM   #30
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where do i find this carbon brush

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Originally Posted by jimdavi View Post
Mine was the shaft carbon brush as well.
Hello, i have also twin 3208ta engines but where is this carbon brush located ?
best regards,
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Old 06-29-2021, 02:35 AM   #31
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Trace the shaft fwd from the packing gland. If you have one, you will see it.
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Old 06-29-2021, 06:27 AM   #32
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Cutlass bearing

I had a similar experience. It turned out to be the cutlass bearings on my Nordic Tug.
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Old 06-29-2021, 08:14 AM   #33
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+1 for the carbon brush.
Happened to me while delivering a new Back Cove 41 to a boat show. My first thought, transmission lost its oil. Thankfully, adjusting the brush stopped it.
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Old 06-29-2021, 05:29 PM   #34
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Screeching sound from engine room.

I had a similar sound one day when going out to exercise my For Lehman’s. I lost have NAID stabilizers. Turns out, after checking belt tightness, the double belted hydraulic pump on my starboard engine was loose, and upon tightening, the sound disappeared.

Check to be sure your belts are properly adjusted.
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Old 06-30-2021, 11:54 AM   #35
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Quote:
Originally Posted by lanceolson View Post
Thanks for all the responses. I am going to replace the cutless bearing. Does anyone have experience doing that?
If you plan to do it yourself, the 'Strutpro' makes it an easy job. I purchased one to work on my cutlass bearings and I did it without even having to remove the shafts. Theoretically it could be done underwater by a diver. I've now used it on several boats at the boat yard, helping people out.

I detail it's use here:

https://www.trawlerforum.com/forums/...6&postcount=45
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Old 07-02-2021, 08:18 AM   #36
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" I did it without even having to remove the shafts."


sbman,That shaft pro tool looks great,but how do you get the new bearing on the shaft if you don't at least back the shaft out partway?
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Old 07-02-2021, 11:29 AM   #37
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" I did it without even having to remove the shafts."


sbman,That shaft pro tool looks great,but how do you get the new bearing on the shaft if you don't at least back the shaft out partway?
Slide it along the shaft from the aft end where the prop has been removed. If you have more than one bearing on the shaft, you replace the forward one first by sliding it through the aft bearing. A clean shaft and a bit of dish soap can help.
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Old 07-05-2021, 11:29 AM   #38
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Slide it along the shaft from the aft end where the prop has been removed. If you have more than one bearing on the shaft, you replace the forward one first by sliding it through the aft bearing. A clean shaft and a bit of dish soap can help.
That's correct. I pushed a new bearing into the aft strut (which pushed the old one forward and I split it with an angle grinder for removal), I then pushed a second bearing into the aft strut whish pushed the first new bearing forward I then pushed that new one into the forward strut. Shaft stayed in place the entire time. You definitely need the shaft to be clean so you can slide the bearings around.
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Old 07-09-2021, 04:08 PM   #39
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Thanks all...found bad cutless brg...rubber came apart...shaft ok
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Old 07-12-2021, 05:46 PM   #40
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Updated links are below.

We have a new to us 2001 Grand Banks Europa 52 with Cat C9 engines and approximately 3300 hours. The boat was surveyed on the hard in March and in the water in April.

We have an unusual sound that starts around 1400 rpm and disappears at 1650 rpm or so. I wouldn’t refer to it as a screech, but more as a low frequency moan. We checked the engine room which is mid ships, and the noise appears aft of the engine room and is more pronounced in the aft cabin which is between the engine room and lazarette.

When we surveyed the boat, the cutlas bearings looked fine and we were able to rotate the prop shafts as appropriate.

Here are links to two videos with sound. You will have to listen carefully for a low frequency moan. When the moan starts there is no discernable difference to acceleration or anything else. The alternators are charging, and it seems to come from aft of the engine room.

Any ideas?

Here are the two links:

https://youtu.be/5ndXttJj_aY
https://youtu.be/kEXwRhvtdWA

Thanks,

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