Re: BigKev

Posted by BigKev On 2023/4/30 15:32:28
Ok, busy day here in the garage. First, I had to take ten gals of stale fuel to the local Hazardous Waste Drop-Off location to get rid of it. With that gone, and now I had two empty 5 gal cans, was able to siphon the last two gallons out of the tank.

Then I was able to drop the tank and get the sender out.

The sender had two issues. One, the coak float was completely fuel soaked. I wondered why the sender felt so heavy. I literally could squeeze fuel out of the float. What is a source for a plastic float to replace this style of float? It has a rod through the center and measures 3" long with a diameter of 1-1/4".

The send issue was inside the sender itself. I had to drill out the rivets that hold the two haves together. Once apart, beside being filthy inside, I found the issue.

There is a floating spring loaded cap that ride on the internal float arm. That spring loaded cap presses against the resitor wire.

The cap was junked up and stuck to the rod and also the spring had pretty much lost its tension.

So I unjunked everything, and stretched the spring out. Then it all appeared to work.

Based on the info Howard posted above, 37 models use A.C. Gauges.

When the float range, I am getting ~4ohms empty and ~35ohms full.

When hooked up to the dash gauge that sweeps from nearly empty to full. I was only using alligator clips to test all this, so perhaps once everything is bolted in place, those ranges with be closer to 0 (empty) and 30 (full). This corresponds to Howard's chart above that pre-1965 GM gauges are 0-30. This appears to follow that.

Nowhere in any of the Packard manuals does it list the ohm range. But this swept through the gauge as expected.

Now I just need to replace the float, and I should be good to go on that front.

Any sources for his style float in plastic?

Attach file:



jpeg  1-TankOut.jpeg (102.41 KB)
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jpeg  SenderOutside.jpeg (103.57 KB)
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jpeg  FloatDiameter.jpeg (124.19 KB)
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jpeg  FlotLength.jpeg (126.07 KB)
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jpeg  SenderInside.jpeg (105.18 KB)
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jpeg  TankEmpty.jpeg (100.31 KB)
1_644ed053210a8.jpeg 576X1280 px

jpeg  TankFull.jpeg (94.48 KB)
1_644ed058d88e5.jpeg 576X1280 px

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