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fuel sender leak

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cscsail(at)gmavt.net
Guest

Posted: Tue Jan 17, 2006 2:03 pm Post subject: fuel sender leak

I just checked my  701 fuel tanks (main & aux.) in the right wink for leaks prior to closing it up. I found that both VDO fuel senders leaked around some of the screw heads that go into the backing flange inside the tank. The paper washes under the screw heads had split, probably from over tightening, although it doesn't take much to break them. I also has a leak when I put an electrical ring connector under a screw head for a ground, as shown in the assembly guide. Has anyone else had this problem, and is there a better washer, copper, etc. that might be more durable. It seems like these thin paper washers are all that prevent the screws from leaking fuel?



Gordon

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NYTerminat(at)aol.com
Guest

Posted: Tue Jan 17, 2006 10:32 pm Post subject: fuel sender leak

Gordon,



I had to replace the VDO sending unit in my 701 last week. I couldn't get the 

new one to seal, had it in and out 4 times through an access hole in the 

bottom of the wing( you did put an access hole in, right?) A mechanic on the field 

told me to use "Fuel Lube" and don't over tighten the screws. I used it and 

it worked the 1st time. It has the consistancy of a toilet bowl wax ring but 

won't dissolve in gas. I asked where to purchase it and he told me Aircraft 

Spruce but I couldn't find it there. Copper washers are available at auto parts 

stores. My replacement fuel sender (not VDO) used them undrer the ground lug, 

the other screws had little nylon washers.



Bob Spudis

N701ZX





In a message dated 1/17/2006 5:12:40 PM Eastern Standard Time, 

cscsail(at)gmavt.net writes:




I just checked my  701 fuel tanks (main & aux.) in the right wink for leaks 

prior to closing it up. I found that both VDO fuel senders leaked around some 

of the screw heads that go into the backing flange inside the tank. The paper 

washes under the screw heads had split, probably from over tightening, although 

it doesn't take much to break them. I also has a leak when I put an 

electrical ring connector under a screw head for a ground, as shown in the assembly 

guide. Has anyone else had this problem, and is there a better washer, copper, 

etc. that might be more durable. It seems like these thin paper washers are all 

that prevent the screws from leaking fuel?



Gordon

- The Matronics Zenith-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Zenith-List

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