[C320-list] Temperture Sender - 3GM30F - Test Procedures Fuel Gage / Temp Gage

[Jamie Pett]

Chris / Joe / List - Attached are test procedures for both the fuel and
temperature gages for C-320's with Seaward engine control panels.  

These allow you to hopefully identify if the issue is the sender, gage,
wire, etc.  These are probably obvious to those of you who know about
such things electrical, but for the rest of us may be quite helpful.
They require that you remove the panel face (six screws) to access the
back of the gages and wiring harness, remove wires, etc. but nothing too
difficult.  

Chris Burti is going to try to expand with an article.

These procedures came from Seaward  Products who manufacture some (all?)
of the engine control panel on Catalina's.  Seaward's panel guy is
Dennis and he can be reached at 562-699-7997 extension 210 or via e-mail
at dennisi at seawardproducts.com  He's very helpful.

Seaward can supply new gages.  On my boat (1999 hull #614 with a yanmar
3gm30f) the temperature gage is model #84590F.  The gage was originally
made by Teleflex, but is now manufactured by 'V-3' and Seaward can
supply them for about $46 plus shipping if yours goes bad.  Dennis
thought they might be available through Mack Boring as well.

Temperature sending units can generally be gotten at marine parts
suppliers  - in the Annapolis area one source is Bayshore Marine
(410-263-8370) but you will need the spec. which for the 3GM30F with a
Seaward panel is "Stewart Warner, 240 to 33 Ohms Resistance" - I think
this is consistent for all late model C320's.

My issue, gasp, appears to be the wire - so I'll be hatch diving in the
lazarette shortly......

Hope this is helpful.


Jamie Pett
Bella Luna
#614



-----Original Message-----
From: c320-list-bounces at lists.catalina320.com
[mailto:c320-list-bounces at lists.catalina320.com] On Behalf Of Joseph
Aberdale
Sent: Wednesday, July 28, 2010 10:53 PM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] Temperture Sender - 3GM30F

Jamie,

Please send me the Seaward test procedures.  Thank you.

Joe Aberdale
#908

On Jul 27, 2010, at 11:03 PM, Jamie Pett wrote:

> Jeff - Thanks.  Talked to Dennis at Seaward today, I am reasonably  
> sure  the problem is the wire - he initially thought I had a bad  
> gage - "lost zero"  and he sent test procedures to confirm, but I  
> ran those tonight and the gage seemed  ok based  the  test.  Wire  
> test definitely seems bad.
>
> Think wire is bad or shorting to ground, but not sure how to  
> confirm and find the problem with the wire and I ran out of  
> daylight ! Might it be right at the sender - connection seemed  
> fine ?  I am reasonably clueless about electrical systems.
>
> Anyway, I'll let you know what I find - I do have the Seaward test  
> procedures for the gage, wire and sender,  if anyone wants them.
>
> Jamie Pett
> Bella Luna
> #614
>
>
> -----Original Message-----
> From: c320-list-bounces at lists.catalina320.com on behalf of Jeff Hare
> Sent: Tue 7/27/2010 7:32 PM
> To: C320-List at Catalina320.com
> Subject: Re: [C320-list] Temperture Sender - 3GM30F
>
> Hi Jamie,
>
> Seaward made the instrument panel. That is where I gor a spare temp  
> sender for our 2001 #809.  If you get one from Yanmar, it'll likely  
> not read correctly as they have there own panel.
>
> Check the connection on the sender. The wire may have corroded or  
> may be shorted to ground.
>
> Remove the wire and with a ohm meter, check whether the Screw in  
> the end of the sender is a short to the case (ground). Also check  
> whether the wire is shorted or broken?
>
> -Jeff
>
> ------Original Message------
> From: Jamie Pett
> Sender: c320-list-bounces at lists.catalina320.com
> To: C320-List at catalina320.com
> ReplyTo: C320-List at Catalina320.com
> Subject: [C320-list] Temperture Sender - 3GM30F
> Sent: Jul 27, 2010 12:40 PM
>
>
>
> I have what I believe is a failure of the temperature sender on our  
> 1999
> - Yanmar 3 GM 30 F.  On starting the engine, it immediately reads 240
> degrees.  The engine is running perfect, pumping water and cooling  
> fine,
> etc.
>
>
>
> When I spoke to a marine dealer to get the sender, they said I  
> needed to
> know what system / gage type  it was, since it wasn't Yanmar made  
> sender
> -they mentioned  Teleflex, Stewart Warner, etc. - I cannot find any  
> such
> indication on the gage or the sender, although I have not removed  
> sender
> yet.
>
>
>
> Anyone have any thoughts , including any special process for the  
> removal
> I should know about ? - It seems like its just one wire and then it
> screws in like a spark plug.
>
>
>
> Thanks -
>
>
>
>
>
> Jamie Pet
>
> Bella Luna
>
> #614
>
>
>
>
>