Re: 1929 packard 626 fuel tank sending unit

Posted by Thomas Wilcox On 2011/6/24 21:37:00

I just did the unit on my 733. I cleaned all the organic crud using lacquer thinner. I let the thinner evaporate and then soaked it in 5% muriatic acid (HCL). I would let it soak for a few minutes, try to scrub off the lime with a tooth brush, let is soak a little longer, scrub, and repeat until clean. Don't let it soak overnight or anything like that. You will find large chunks missing in the morning!

I cleaned out the inside of the tubes using pipe cleaners or small bits of rags dragged through with a very thin copper wire.

Cheers,

Tom