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Old 06-05-2012, 13:00   #1
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pulling transducers

I am trying to pull out a knot meter transducer from a through hull fitting. The transducer is from a Signet Scientific MK 267. The cap unscrews easily but I cannot pull the transducer out of the fitting. I want to replace the paddle wheel and don't want to break it. I think it is just stuck. Any suggestions on a method to gat enough leverage on the transducer gap to pull it from the fitting?
Thanks
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Old 06-05-2012, 14:02   #2
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Re: pulling transducers

Greetings and welcome aboard the CF, rdamaro.

After removing the threaded cap, you should be able to removed the transducer by pulling straight up on the wire handle (see figure 3.5). There should be an audible "click" as the 'xducer disengages from the notch in the through-hull fitting. The handle should be aligned fore and aft.

http://www.cncphotoalbum.com/service...267knotlog.pdf
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Old 06-05-2012, 16:24   #3
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Re: pulling transducers

To get a better handhold on the speedlog transducer, I thread a sailtie into the handle.

Alain
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Old 06-05-2012, 17:05   #4
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Re: pulling transducers

Can you turn the transducer in either direction? It might have a bayonet or similar type fitting.
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Old 06-05-2012, 21:39   #5
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Re: pulling transducers

I have pulled it as hard as I can and was even able to get some leverage on the edge of cabinet it is under. It does not move period. I was wondering if there is some kind of gear pulling type device used for this.
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Old 07-05-2012, 04:54   #6
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Re: pulling transducers

When did you last pull it. It may be overgrown with coral around the head, preventing it from sliding back.
It doesn't have a cotterpin like the old B&G, IIRC.
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Old 07-05-2012, 05:58   #7
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Re: pulling transducers

In the past I've had a hard time of removing the transducer since the location was such that it was difficult having enough space to really get a good vertical pull on the thing. It was much easier to remove once the boat was hauled because then I could push it out from the outside. Lubrication of the O rings might help in the future.
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