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willysmjeeps.com :: View topic - M38A1 Fuel tank sender and pickup mounting rings
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M38A1 Fuel tank sender and pickup mounting rings

 
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Ivoryring
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Joined: Apr 19, 2016
Posts: 59
Location: Hopkinton, NH

PostPosted: Fri Aug 14, 2020 2:37 pm    Post subject: M38A1 Fuel tank sender and pickup mounting rings Reply with quote

I have a used original tank that had be repaired by RENU when owned by a previous owner. The liner has failed badly. I tried aircraft stripper without success and tried to find someone locally that would acid dip it to clean out the old liner but was unable to find anyone. So I asked a local machine shop and after they laughed and told me to just replace it with a reproduction tank, they offered to bake it. At this point if I can't get the tank to work I'm thinking I'll have to just get an MD Juan one, I figured it couldn't hurt to have them try.

The oven got all the treatment off the outside of the tank, but didn't completely clean the inside.

It also managed to dismount the square cable clips and the bolt down rings for the sender and the pickup.



The tan spot in the top of this pic I thought was cement, but on taking a wirewheel to the sender hole, I found that under that 'cement' was what looks like solder.

A few questions:

1.) Were these two rings originally soldered in place or attached in some other way such as cement as I thought earlier?
2.) In any case, where is the alignment mark intended to point?
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OKCM38CDN
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Joined: Feb 17, 2012
Posts: 411
Location: Del City, OK

PostPosted: Fri Aug 14, 2020 4:56 pm    Post subject: Reply with quote

Most likely what you think is solder was actually Brazing (Brass). If they used an oven they probably took the tank to approx 600 degrees, Brazing or brass melts at about 3-400 degrees. If you have access to a torch I bet they can be remounted by brazing them on... Not Propane, something with Oxygen (MAP Torch maybe)

Just my opinion...
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Hal, KB1ZQ
TSGT, USAF (Ret)
1952 M-38 CDN CAR 52-31313
1952 M-100 Strick #104
1951 Willys Wagon (For Sale)
1954 Willys M38A1 (Restoration In Progress)
Tornado Alley
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Ivoryring
Member


Joined: Apr 19, 2016
Posts: 59
Location: Hopkinton, NH

PostPosted: Fri Aug 14, 2020 6:15 pm    Post subject: Reply with quote

OKCM38CDN wrote:
Most likely what you think is solder was actually Brazing (Brass). If they used an oven they probably took the tank to approx 600 degrees, Brazing or brass melts at about 3-400 degrees. If you have access to a torch I bet they can be remounted by brazing them on... Not Propane, something with Oxygen (MAP Torch maybe)

Just my opinion...


It isn't a problem for me to remount with either braze or solder - but the metal I'm seeing spattered is silver not yellow, hence thinking it is solder. There are brazed patches along the seams - I'm assuming these are leak fixes.
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1952 Willys Overland Model MD (M38A1) #MD25713
2013 Jeep Wrangler Unlimited
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