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Andyt

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Reply with quote  #1 
Hi all 
I need help to identify this "T piece" It is on the end of my heat exchanger. It has 1 wire coming from it maybe a temp sensor ????
in pic 1 there is also a hose clip that had a wire coming from it maybe an earth ????? 
1.jpg  2.jpg  3.jpg  4.jpg  5.jpg 
Any ideas ????

Halinda

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Reply with quote  #2 
Hi Andy , where did the other end ofthe wire go ? What engine do you have ?
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S Manning
Andyt

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Reply with quote  #3 
Hi 
The other end of the wire is not connected to anything it has a Female spade fitting on it.
the engine is a petter ac2w
Halinda

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Reply with quote  #4 
Ok so the rusty looking tee probably is a home made temp sender  , the wire is the sender wire and goes to (S) on the gauge ,next you need a ground or earth  (G) on the gauge after that you will need a positive (I) on the gauge
Simon

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S Manning
Andyt

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Reply with quote  #5 
Hi Simon 
Thanks for that. It makes sense but i thought the engine would have had its own temp sen. 
The T piece will be on the fresh water side of the heat exchanger ?
Halinda

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Reply with quote  #6 
I agree Andy ! do you have a pic of your engine ?
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S Manning
Andyt

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Reply with quote  #7 
morning Simon
I dont have at this moment but im going down the harbour in a bit. i will take a few then. I have to rip out all the rotten timber that i found under the heat exchanger. I have you any idea if i can replace the cylinder head gaskets on a lister petter ac2w insitu or does it have to come out ?
Andy
Halinda

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Reply with quote  #8 
Sorry no idea Andy i would guess its all about access , I know my volvo would need to come out but its really easy to remove !
Simon

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S Manning
Halinda

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Reply with quote  #9 
http://winget.co.uk/document/PETTER%20A%20RANGE%20WORKSHOP%20MANUAL.pdf

Found this earlier Andy useful to have around
Simon

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S Manning
Andyt

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Reply with quote  #10 
Cheers Simon
At least i will have some idea of what im doing now'
I was a bit worried about taking the engine out but now it looks like i may be able to do the job in her.
Today was a case of cutting out all the rot both wet rot and dry rot.
the joys of owning a 50 year old yacht  
Halinda

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Reply with quote  #11 
True enough!  at least its not completely wooden [biggrin] , i do wonder if the pics you show are of some kind of oil cooler ? the only reason i think that is that the heat exchanger should be part of the exhaust manifold !
Simon

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S Manning
Andyt

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Reply with quote  #12 
The hoses that come from it do lead to an inlet at the front of the engine but there is also hoses going to the IMAG1161.jpg  manifold. the black hose goes over the engine and then into the exhaust.
Andyt

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Reply with quote  #13 
the wiring is a total mess IMAG1238.jpg  IMAG1242.jpg Def got my work cut out for this winter [frown]
Halinda

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Reply with quote  #14 
Ok so it looks like yours is fresh water cooled hence two pumps .Theres no header tank incorporated into the exhaust manifold so the must be a header tank for the fresh water ! i sure you'll have hours of fun with the wiring
Simon

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S Manning
ernst

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Reply with quote  #15 
Yes, the wiring is messy, but looks in order. 
Best is to follow the wires, and draw a map of the existing.
Then look what can / should be improved ( extra batteries, like start battery / light battery separated by diode , add a wall connection, etc. etc. ) and install again.

The engine is fresh water indeed. Do you have a filter between inlet & waterpump?

Left from the top wheel you see the knee with hose of the waterpump out, the waterpump in is behind the top wheel.
The hose after the knee is going in the engine, ( cold in ) 
The warm out ( black hose ) should be 2, connected together in a T , and going as one hose to the exhaust manifold ( exhaust mixed with warm cooling water ) indeed.

But damn it looks like a nice plate of spaghetti/ penne/ macaroni mixed with noodles!
Good luck!

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Ernst

Zonder geluk vaart niemand wel.
( .. Without luck nobody sails well..)
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