[Alberg30] Cutless Bearing Removal

[Mike Lehman]

probably need a whole tube....or two. 5200 is great for this job.



Mike Lehman
"Gilleleje" #505





----Original Message Follows----
From: George Dinwiddie <gdinwiddie at alberg30.org>
Reply-To: Alberg 30 public list <public-list at alberg30.org>
To: Alberg 30 public list <public-list at alberg30.org>
Subject: Re: [Alberg30] Cutless Bearing Removal
Date: Sun, 27 Oct 2002 17:31:23 -0500

You'll want two hose clamps on the stuffing box hose (two at each
end).  Given the shape of the hull, and the likelihood of caulk
sticking out when you put the tube back in place, I wouldn't
underestimate the length needed.  You want to clean out all the
old caulk that held the tube in place.  I recommend using 5200
for recaulking.  And you'll probably need a whole tube.

  - George

Voyager Toronto wrote:

>I'm replacing the cutless bearing as a first step to installing a yanmar
>2GM20F. I've managed to remove the 8" bronze stern tube and the stern
>casing into which it threads. I did this by removing the casing bolts
>and hammering the bronze tube backwards to drive the whole assembly
>(tube and casing) from the hull. The lower edge (diameter) of the
>forward face of the bronze tube had been worn down to a knife edge by a
>misaligned shaft, and the hammering has further deformed its forward
>end. My plan is to simply cut off the deformed end, as the original 8"
>tube length appears to be unnecessary given that the cutless bearing is
>only 3-1/2 inches long and is entirely housed in the casing. I figure as
>long as I have enough length to clamp the stuffing box hose onto, I'll
>be OK. Can anyone see errors in this reasoning, or any ill effects from
>a shorter tube?
>
>As a sidebar, the bearing is so firmly fixed in the casing (of course,
>I've now unscrewed the bronze tube), it has resisted all home-grown
>efforts to push or knock it out. Part of the problem is I don't know
>just how aggressive I can be without damaging the casing. I hesitate to
>try cutting it, as I don't want to cut into the bronze casing. Any ideas?


--
  ----------------------------------------------------------------------
   George Dinwiddie                             gdinwiddie at alberg30.org
   The gods do not deduct from man's allotted span those hours spent in
   sailing.                                    http://www.Alberg30.org/
  ----------------------------------------------------------------------

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