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Thu, April 22 2021, 07:32Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: [1]2345678910 ]

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Date Posted: - Thursday - 01/31/13 - 5:18pm
Author: Brian
Subject: Cutlass Bearing
In reply to: Sietse 's message, "Cutless Bearing" on - Tuesday - 01/22/13 - 10:44pm

Hello All,

I really struggled to replace my cutlass bearing. The problem was getting the prop shaft out of the flange. The flange bolts had to be cut off, and that was after lots of coaxing, lubricants and heat. After the flanges were separated, I put a large socket between them and extra long bolts, to compress the flanges and push the shaft out. It wouldn't budge. Even with around 100 ft lbs of torque on each of the bolts. I finally resorted to cutting the shaft. The machine shop that finally separated the shaft and flange said it took 12 tons of pressure to push the shaft out.

I put in a 1 1/4" stainless shaft with an american taper, new cutlass bearing, new 3 blade prop, new hose on the packing gland, and packing.

Sorry it took so long to respond. Many hours at work and hard to do this on my phone.

Good Luck

Brian 1973 M36 Hull 209 "Gran Mariner"

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[> [> Cutless Bearing -- Sietse (M32 #49 "Waka Irie"), - Friday - 02/ 8/13 - 5:24pm

Hi All,

Thanks for all that info.

So we've made it through the canal to the Pacific side without too many problems (one bend bronze fair-lead on the stern) and have put our cutless bearing project on hold for a while since we just broke our mizzen boom.

Even though Doug makes it sound like a piece of cake i'm more worried that our case will be more like Brian's where it might take a lot of pressure to get the shaft out of the Flange.

I checked the shaft myself while anchored in the crocodile infested Rio Chagres river and needless to say didn't want to stay down longer then i had too.
Sure there was some play but it didn;t seem that bad.
it is hard to move the shaft and prop sideways and there might be only 1mm of play in it.

I should really tackle the whole problem at the source and that's probably misalignment of the engine.
For that i do have to take the Coupling apart but don;t necessarily have to go out of the water yet.

But we might not get around to fixing this until we reach NZ/AUS and just SAIL across the pacific.

for that we do need a new Mizzen boom :)

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