[C320-list] Depth Sensor

Sat May 6 18:55:52 PDT 2006

Thanks Quentin, I haven't had too many responses on this one, I suppose
the depth sender unit doesn't fail often. I am trying to find a
replacement sender to install when I haul the boat next week.

Kirk L. McCullough
Analytical Sales Mgr 

-----Original Message-----
From: C320-List-bounces at catalina320.com
[mailto:C320-List-bounces at catalina320.com] On Behalf Of Quentin Murphy
Sent: Thursday, May 04, 2006 7:23 AM
To: C320-List
Subject: Re: [C320-list] Depth Sensor

I replaced my depth sounder three weeks (due to a slow leak the previous
season) when the boat was out of the water (on its cradle during winter
lay-up).  After undoing the plastic ring nut, it would not come out of
the
hull, due to the old sealant.  I used a wide chisel outside the hull to
try
to pry it off and at the same time using a wooden block and a hammer to
hammer it out from the inside.  As it slowly worked out I was able to
cut
away more of the old sealant from the outside.  This process took at
least
twenty-minutes.   The sender will eventually come out.  Once removed and
removed all the old sealant using a sharp wood chisel and then sanded
the
area inside and outside the hull around the hole with emery cloth (the
type
used when soldering copper pipe) and as a final step cleaned both
surfaces
with acetone.

I then used under-water marine sealant and installed the same sender (it
was
not defective which I also cleaned carefully) and tightened everything
up.
Once back in the water two days later....no more leak.

If you are replacing the sender, may I suggest you cut the old sender
cable
about five feet from the sender and splice it to the old wire under the
port
settee.  I did that procedure with my speed sender last weekend as
trying to
get the cable up through the Edson guard was near impossible.  This
splicing
has been done without problems by others on the List.  Make sure you
solder
the wires and use heat-shrink tubing on that splice.

Quentin Murphy
Celtic Knot #667

-----Original Message-----
From: C320-List-bounces at catalina320.com
[mailto:C320-List-bounces at catalina320.com]On Behalf Of McCullough, Kirk
Sent: Monday, May 01, 2006 1:06 PM
To: C320-List
Subject: Re: [C320-list] Depth Sensor

I haven't looked too closely but it looks like the depth sensor is
epoxied in place. Not sure how it can be removed.

Does anyone know where I can order a new sensor?

Kirk L. McCullough
Analytical Sales Mgr

-----Original Message-----
From: C320-List-bounces at catalina320.com
[mailto:C320-List-bounces at catalina320.com] On Behalf Of Steve Magennis
Sent: Monday, May 01, 2006 9:56 AM
To: C320-List
Subject: Re: [C320-list] Depth Sensor

Pat, the speedo is easily replaced with the boat in the water like you
described.  However, Kirk is talking about his depth sounder.  That
transducer doesn't replace easily unless you haul the boat (and even
then, it's not too easy because you need to pull the wire through the
hole too).

Steve
Alchemist #909

--- Pat Moriarty <patm at psiurethanes.com> wrote:

> Try cleaning it first then it is as simple as pull the old and put in
>
> the new. You can do it with the boat in the water and if you are fast
>
> not even a gallon will get in.
>
> Pat
> SEXUALHEELING  #130
>
> At 10:46 AM 5/1/2006, you wrote:
>
> >On a slightly different subject:
> >
> >Has anyone ever changed the depth sounder sensor? I am getting a
> zero
> >depth reading on the display at the helm. The speed indicator works
> just
> >fine, so I am thinking it must be the sensor. I don't have any
> >information on how to change this unit out.
> >
> >Kirk L. McCullough
> >Boomerang #124
> >
> >-----Original Message-----
> >From: C320-List-bounces at catalina320.com
> >[mailto:C320-List-bounces at catalina320.com] On Behalf Of Quentin
> Murphy
> >Sent: Friday, April 28, 2006 6:42 AM
> >To: C320-List
> >Subject: [C320-list] Knot Meter Sender Replacement
> >
> >I'm replacing the Raymarine knot meter sender (thru-hull unit with
> >paddle
> >wheel) as it's defective. I've tested with a new sender by spinning
> the
> >wheel and the display showed "speed" just to make sure it is the
> sender
> >that's at fault. Due to the five female spade connectors on the
> >instrument
> >end of the long cable that comes with the sender I'm having
> difficulty
> >removing the old sender cable down through the port pedestal guard
> tube
> >to
> >the aft cabin ceiling below.  There is a cover for the steering
> pulleys
> >with
> >about 12 screws which I removed.  This pedestal guard tube is so
> packed
> >as
> >there are many other cables for other instruments in the port side
> of
> >the
> >guard as well as in the starboard side.  As I have to attach a thin
> >nylon
> >fish line to the end of this with electrical tape all over the spade
> >connectors, I feel there is no way to pull them past the other
> cables
> >(without it breaking apart or damaging the other cables.  The only
> way
> >this
> >could be pulled in my mind is: disconnecting all of cables to the
> >instruments and pulling them all out as at one go and then pulling
> them
> >all
> >back, minus the old cable, adding the replacement cable.  That would
> be
> >a
> >lot of hassle.  Can anyone see a problem if I cut the cable (say
> under
> >the
> >port settee) and solder the fire wires in this cable, using heat
> shrink
> >on
> >each wire and then a larger heat shrink on the cable jacket?  It's
> >pretty
> >dry there, especially if I tyrap it high up.
> >
> >Quentin Murphy
> >Celtic Knot #667
> >
> >
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