flathead heat sending units

[Kentf1003]

I have several flathead heat sending units and would like to identify them for the years they originated. Any Barners know of a list that shows the matching numbers? Thanks.

 

[Mac VP]

The single terminal type is the 8A-10884 and the double terminal is the 8A-10990. If you plan to sell them, I suggest testing them first to make sure they work. We had a handful of NOS senders that were no good. The brand new senders work ok, so if they don't test good, pitch 'em.

 

[oldford2]

What is the procedure for testing them? Thanks
John

 

[19Fordy]

This may help. Info. is from 1949-51 Vol.2 of Mercury Overhaul Manual. I bet these interchange with FORD to some degree.

 

[19Fordy]

Here's how you test them. FORD is the same. Click on pic. to enlarge.

 

[19Fordy]

This is the END. Plus the Mercury Manual.

 

[oldford2]

19fordy,
Thanks for your efforts to post this test. I will print it out.
John

 

[Kentf1003]

Not interested in selling them. Simply want to match up a pair for a 1946 59AB engine that is in going in my 40PU.

Prior to using, is their a preliminary resistance or continuity check that would spot a bad sender?

Thanks.

 

[Bluebell]

Kent the double terminal one would be same as an on off switch. 0 ohms when cold, and open cirrcuit when hot.
I can't tell you about the single termial one.
Did I read somewhere that there are two different single terminal ones?

BTW, 19Fordy's posted pictures cover the test procedure.
Thanks 19Fordy!