[Alberg30] More Stuffiing Box Hose Replacement Questions
Mike Lehman
sail_505 at hotmail.com
Wed Apr 24 06:52:45 PDT 2002
Tom, That will work, I've done the job a couple of times and it's not that
bad. A couple of tips:
Disconnect the coupling from the engine; loosen the set screw on the shaft
flange coupling; if the coupling flange comes easily off the shaft you're
lucky and be careful not to drop the key into the bilge. If it doesn't come
off easily; using longer screws, connect the coupling back together with a
5/8" socket between the the flanges so as you tighten the bolts it will push
the shaft out out the flange.
Loosen the hose clamps, then remove the stuffing box and you may be able tug
on the hose to free it. It's no big worry really if you need to reseal the
stern tube. I have removed it and re-installed it on a couple of A30s and
it's not as bad as it sounds. Scary the first time, but If you think it
through, understand how the pieces work together, and take your time, you
can rebuild the whole drive train in under 10 hours.
Hope this helps
----Original Message Follows----
From: "Forhan, Thomas" <Thomas.Forhan at mail.house.gov>
Reply-To: public-list at alberg30.org
To: "'public-list at alberg30.org'" <public-list at alberg30.org>
Subject: RE: [Alberg30] More Stuffiing Box Hose Replacement Questions
Date: Tue, 23 Apr 2002 18:44:31 -0400
Thanks for the details Mike. On this one, clearly the aft end of the hose is
covered with caulk -its pretty flexible, and I can not see hose clamps, or
find any easily probling with a small screwdriver- but they could be there.
We could continue to dig around and try to find those hose clamps, but with
sealant holding in the tube itself that sounds dangerous.
The buyer is very uncomfortable about the condition of the hose, and it
sounds to me- I'm positing theory here and I would appreciate more thoughts-
that we chould go ahead, pull the shaft (ugh) and then cut the hose out,
working carefully aft toward the area of the stern tube as we remove
sealant.
Whadda ya think?
Tom
-----Original Message-----
From: Mike Lehman [mailto:sail_505 at hotmail.com]
Sent: Tuesday, April 23, 2002 4:00 PM
To: public-list at alberg30.org
Subject: Re: [Alberg30] More Stuffiing Box Hose Replacement Questions
Tom,
There is a pipe (stern tube) that goes thru the hull. On the outside the
cutlass bearing housing screws onto the end of the pipe. On the inside the
rubber hose covers the inboard end of the pipe and is secured by two hose
clamps. On the other end of the hose, the stuffing box is secured by two
hose clamps. The stuffing box makes the seal around the shaft, which runs
thru this pipe, and keeps the water out of the boat. When the boat is in the
water, there is always water in this rubber hose. If this hose fails the
boat would sink, and it would be very difficult to stop the incomming water.
The sealant you see around the pipe on the inside at the hull is polyester
which is used to hold the pipe in place. There should not be any water
entering the boat between the pipe and the hull. The sealant application
wasn't very neat, but it didn't need to be...it needed to keep the water out
and the pipe in place. If it doesn't leak, don't mess with it. The hose, on
the other hand, needs to be inspected periodically for wear or dry rot for
reasons explained earlier. The difficulty with the A30 is that the pipe and
the stuffing box are different diameters. As I recall, the pipe is 1-3/8" OD
and the stuffing box is 1-1/2" OD, meaning that a replacement hose either
has to be a d--- tight fit on the stuffing box, or the hose camps have to be
over tightened on the pipe end to prevent a leak.
Hope this helps
----Original Message Follows----
From: George Dinwiddie <gdinwiddie at min.net>
Reply-To: public-list at alberg30.org
To: public-list at alberg30.org
Subject: Re: [Alberg30] More Stuffiing Box Hose Replacement Questions
Date: Tue, 23 Apr 2002 15:21:44 -0400 (EDT)
Tom,
The hose should be attached with *two* hose clamps at *each* end, for
a total of four. This should be the case for all bits of rubber hose
below the waterline.
It's normal that the shaft log be embedded in gobs of caulk, but the
rubber hose should not be. Do you have a copy of the Maintenance
Manual? In the "prop" chapter there's a pretty good cutaway drawing
of the shaft log and stuffing box (though it only shows one hose
clamp at each end of the hose).
- George
> Forhan, Thomas said:
>
> Does anyone else have the sealant at the prop end of the stuffing box,
or
> can describe what we should be seeing?
>
> We -old and new owner working togther- opened up the inspection plate
and
> got a much better look at it this morning. Perhaps as expected in what
is
> likely the original Atomic 4 installation, we found the stuffing box
nuts
to
> be 1 7/8" and 2". The rubber hose, though not pretty, appears to be
> resilent- you can put your hand around it, squeeze, and feel some give,
so I
> do not think it is dryrotted out. The hull end is totally bedded in
> sealant, so much so that I don't understand what is inside, i.e. how
does
> the hose terminates at the hull/cutlass bearing end. Is the rubber hose
> also supposed to be hose clamped to some sort of sleeve that comes out
of
> the hull? The sealant is so thick that there could be room for a hose
clamp
> in there, but I don't want to pry away at something that I don't
understand.
>
>
> We are going to repack the stuffing box, and the cutlass bearing appears
> fine according to the surveyor, with just a bit of play, so it is not
like
> we need to completely replace everything.
>
> The new buyer is concerned about what would be the right thing to see
back
> there, and I - nor his surveyor, I guess- don't know.
>
> I am also concerned about "destructive examination" causing more a
problem
> than we have now. (Boat has been out of the water for more than two
years,
> but I do not think there was any real problem in the area at that time.)
>
> Any and all advice gratefully received.
>
> Thanks
>
> Tom F.
--
----------------------------------------------------------------------
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/
----------------------------------------------------------------------
+-----------------------------------------------------------+
| ** Skymate Windmeter $18.00 off! Product code JDCSM-18 ** |
| http://www.myaffiliateprogram.com/u/sailnet/t.asp?id=1066 |
+-----------------------------------------------------------+
_______________________________________________
Public-list mailing list -- Public-list at alberg30.org
http://www.alberg30.org/mailman/listinfo/public-list
To unsubscribe: email to Public-list-request at alberg30.org
Include command "unsubscribe <password>" in subject or body.
Use command "help" for more options.
_________________________________________________________________
Join the world's largest e-mail service with MSN Hotmail.
http://www.hotmail.com
+-----------------------------------------------------------+
| ** Skymate Windmeter $18.00 off! Product code JDCSM-18 ** |
| http://www.myaffiliateprogram.com/u/sailnet/t.asp?id=1066 |
+-----------------------------------------------------------+
_______________________________________________
Public-list mailing list -- Public-list at alberg30.org
http://www.alberg30.org/mailman/listinfo/public-list
To unsubscribe: email to Public-list-request at alberg30.org
Include command "unsubscribe <password>" in subject or body.
Use command "help" for more options.
+-----------------------------------------------------------+
| ** Skymate Windmeter $18.00 off! Product code JDCSM-18 ** |
| http://www.myaffiliateprogram.com/u/sailnet/t.asp?id=1066 |
+-----------------------------------------------------------+
_______________________________________________
Public-list mailing list -- Public-list at alberg30.org
http://www.alberg30.org/mailman/listinfo/public-list
To unsubscribe: email to Public-list-request at alberg30.org
Include command "unsubscribe <password>" in subject or body.
Use command "help" for more options.
_________________________________________________________________
Join the world’s largest e-mail service with MSN Hotmail.
http://www.hotmail.com
+-----------------------------------------------------------+
| ** Skymate Windmeter $18.00 off! Product code JDCSM-18 ** |
| http://www.myaffiliateprogram.com/u/sailnet/t.asp?id=1066 |
+-----------------------------------------------------------+
_______________________________________________
Public-list mailing list -- Public-list at alberg30.org
http://www.alberg30.org/mailman/listinfo/public-list
To unsubscribe: email to Public-list-request at alberg30.org
Include command "unsubscribe <password>" in subject or body.
Use command "help" for more options.
1019656365.0
More information about the Public-List
mailing list