Military-Vehicles: Re: [MV] M-37 Gas Gauge

Re: [MV] M-37 Gas Gauge

RKiser8375@aol.com
Wed, 20 Aug 1997 15:38:23 -0400 (EDT)

I've been having a problem the fuel gauge in my 52 M37. I pulled out the
sending unit and noticed that apparently, there is only one wire going into
the sending unit, which surprised me. I assumed that there would be two
wires, a hot wire and a ground wire.

Rob Kiser
'52 M37

<<
I think it is the sender unit. When the tank is full, the resistance to
ground should be maximum, causing maximum deflection of the needle. When you
ground the wire you disconnected from the sending unit does the needle go
toward empty? Since the needle can deflect through its full travel, it must
be a bad resistor in the sender.

Anybody else have any better knowledge? I have an old Motors Manual that
describes several different types of gas tank gauging systems. Does anybody
know for sure what type we are dealing with here? It would depend on what
type you have as to how it should work open circuit or grounded.

for what its worth,


Gil Huguley >>

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