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

[Scott Thompson]

Jamie:  If you login to the Association web site and access "My Account" 
there is a place to upload documents or other files of general interest. 
  They do not actually appear until our fantastic webmaster moves them 
to the right place.  I hope that you will put the info on the web site.

Scott Thompson


Jamie Pett wrote:
> 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
>>
>>
>>
>>
>>
> 

-- 
Scott Thompson
Surprise, #653