Re: Fuel gage problem. on Series 23
Posted by HH56 On 2016/12/26 14:52:31
Here is a schematic and writeup on the operation along with some testing procedures for the 48-50 King-Seeley fuel gauge. It is out of an old 20th edition of Motors Auto Repair manual. It might help you or your mechanic figure out what is happening with yours.
On a gauge that always reads in one place mid scale, typically it is the sender unit that is the problem. Perhaps the float has jammed or something has become disconnected in the linkage that connects the float to the cam or eccentric so that it cannot change the pressure against the bimetal strip in the sender. Gauges do burn out but unless the needle was damaged and jammed at the time, when a gauge burns out usually it will not move off one of the end positions.
Now is about the time a nice access hole in the trunk floor starts to look good. Authentic or not, I am a firm believer and have made access openings in my cars. Here is one I did in the 47. It will be covered with carpet and will not even be visible.
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On a gauge that always reads in one place mid scale, typically it is the sender unit that is the problem. Perhaps the float has jammed or something has become disconnected in the linkage that connects the float to the cam or eccentric so that it cannot change the pressure against the bimetal strip in the sender. Gauges do burn out but unless the needle was damaged and jammed at the time, when a gauge burns out usually it will not move off one of the end positions.
Now is about the time a nice access hole in the trunk floor starts to look good. Authentic or not, I am a firm believer and have made access openings in my cars. Here is one I did in the 47. It will be covered with carpet and will not even be visible.
Attach file:
(102.67 KB)
(358.60 KB)
(100.60 KB)
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