TD-20 Condensers

[caseyj]

I’m rebuilding a Johnson TD 20 and am need of new condensers. The old/original condensers have no markings or part #’s on them. Any help appreciated. Thank you.

[frankr]

Part number 300153. 0.2 mfd

[garry-in-michigan]

This may help for OMC outboards. . . 🙂


For 510178 use 580321 – – .3 µfd.

[caseyj]

Thank you for your responses. I located one individual that had these in stock but his price was about $30.00 a piece. Seems a little excessive but if that’s it , I have no alternatives unless there are substitutes of this size? Thoughts?

[seakaye12]

There have been a few discussions on this board and the Old Mercury forum regarding the swapping of general purpose electronic store capacitors for condensors. Knowledgable folks have researched and tested alternatives.

You may very well be able to "gut" your OEM capacitors and insert one of these inside the metal housing. Typically these condensors cost pennies and will work just fine.

For starters….Read this thread:
viewtopic.php?f=2&t=3447

And this one:
http://johnsoldmercurysite.com/phpBB3/v … =10&t=9090

[Mumbles]

Here’s a link to Digi-Key for the Vishay .22 uF axial caps but it looks like they are out of them. Same with the Cdn warehouse. The larger Orange Drops can be found on Ebay.

http://www.digikey.com/products/en?vend … =bc2609-nd

[collectorinspector]

Radio Spares always a great place…….this au site but there must be one in a evolving economy, one way or the other, like the USA.

http://au.rs-online.com/web/c/?searchTe … ra=oss&r=t

The link should migrate to your locality automatically.

Yeh?

BnC

[aquasonic]

Are you sure that you need new condensers? Often times the TD-20 original condensers will work just fine. Of course new ones are nice to have, but may not be necessary.

[caseyj]

I appreciate all of the responses. I have a lot of reading to do as I am not familiar with the newer devices nor do I even know how to install them. But, I will learn.

As to why I think I need new condensers is that neither one passes the test of resistance. Both show no reading on my multiimeter and being that I have gone this far I might as well replace both condensers. Something that caught my eye on another forum is that if you purchase OEM condensers, they may be deteriorated due to their shelf life of 40 – 50 years being that they were discontinued then. Thanks again.

[mercuryman]

Condensers should read infinity on resistance test . So no reading is good. Charge you condenser by touching the wires to 1.5 volt battery. Then check voltage on lowest DC scale, you should read voltage and it will blhttp://pochefamily.org/outboard/Conde … ng.htmleed off. Check out this site for condenser testing

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