[FC] Fuel tank sending unit -

[Ken Hand]

I think the answer would be to get a new early sender unit and put the electrical rheostat in the FC unit. That should cure what you are experiencing. You probably could even take the float arm and modify it so you have a new contact.

One of the problems with any of these units is electrical continuity. the only real contact these units have for a ground is through the little spring inside the rheostat housing that contacts the housing and the shaft. If there is any rust, dirt corrosion in this area you will get erratic readings with everything else in perfect condition. The wound heostat can be checked for continuity by taking the analog meter contacting the lead out and then running the other probe up and down the wires, CAREFULLY. If there is a break in the rheostat then the meter will not work past that point otherwise it is a contact problem.


Ken Hand
248-613-8586
www.corvairmechanic.com



-----Original Message-----
From: J R Read <hmlinc at sbcglobal.net>
To: Jeff Brylow <jeffbrylow at gmail.com>; corvanatics at corvair.org
Sent: Wed, Nov 3, 2010 11:39 pm
Subject: Re: [FC] Fuel tank sending unit -


Did you get any sort of answer?  I never saw one posted.
20ish years ago lclc did a tech session on sending units which I attended. 
hile there is no way that I can remember all of it, I do recall that an EM 
includes FCs) should range between 0 and 30 ohms on a meter.  With the unit 
hich is out of the tank, you should be able to hook up the ohm meter and 
ove the lever which holds the float to see what readings you get at various 
oints.  Say... half way should be ~15 ohms as example.
It sounds as if you already know this stuff by the way your question was 
orded.
Perhaps you need to take a closer look at the rheostat to be certain that 
here are no broken wires in the coil?
Later, JR

---- Original Message ----- 
rom: "Jeff Brylow" <jeffbrylow at gmail.com>
o: <corvanatics at corvair.org>
ent: Sunday, October 31, 2010 11:18 AM
ubject: [FC] Fuel tank sending unit -

 Folks - I'm in the process of restoring the fuel tank in my '64 
 Greenbrier.
 My questions pertain to the sending unit. What is the proper (best) way to
 test the unit off of the vehicle?
 Is there a restoration process for these units to help with functionality
 and reliability?  I've tested two units that I have, one out of this tank
 and one from a '62, and both give erratic readings on both a digital and
 analog ohm meter. Upon opening up the rheostat on one of the units, all
 seems well. Quite clean and there seems to be good contact between the
 metallic strip and the sliding contact. Any help or shared experience will
 be appreciated.

 Jeff Brylow

 Wisconsin

 '62 Greenbrier Deluxe (borderline basket case)

 '64 Greenbrier 39K

 '64 Monza sedan 65K
 
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