Hi all -

Wanted to share my experience replacing our diesel tank on our '77 CNC 34
and ask a quick couple questions. I'll ask the questions first and then
give the whole story:

1. I hooked the leads from the sender on our new tank
<http://www.moellermarine.com/moeller-marine/fuel-containment/19-gallon-permanent-below-deck-boat-fuel-tank-032519/>
to the old gauge and it doesn't work. You can see photos of the old gauge
in the Google Drive linked below. Do I need to get a new fuel gauge? Also,
why in the world are there SO MANY red wires coming out of our existing
fuel gauge?

2. There wasn't a way to prime the line between my fuel filter and the tank
(no bulb in the tank and no pump on the filter). I ran the engine last
night for about 40 minutes without any problem, so maybe it's fine? Anyone
have any knowledge of this?

3. The old tank was grounded to the engine as well as to the deck filler
fitting. The new tank has no bosses for any kind of grounding, and,
somehow, I can't find any spot to ground the deck filler fitting. Do these
all need to be grounded?

Here's a Google Drive with a few photos
<https://drive.google.com/open?id=1foukq8-ib_UQ0mU9HQ4SIflU_-j1gf5V&authuser=andrew%40transom.design&usp=drive_fs>,
and here's the full account:

Back in May we discovered diesel in the bilge, which was traced back to our
40+ year old aluminum diesel tank. Since it was so old I decided to replace
it rather than try to repair it, and decided on a 19 gallon Moeller plastic
tank
<http://www.moellermarine.com/moeller-marine/fuel-containment/19-gallon-permanent-below-deck-boat-fuel-tank-032519/>,
as it was almost exactly the same size as our existing tank. The straps
that held down our existing tank were badly corroded, so I decided to use
their hold-down kit
<http://www.moellermarine.com/moeller-marine/fuel-containment/permanent-fuel-tank-aluminum-hold-down-kit-4-brackets-035710/>
- it seemed more clean and secure than straps anyway. This posed a problem
however, because the shelf that the tank was situated on was too small to
accommodate the additional space required by the brackets, so I had to
remove the existing shelf and cut a new one.

I used 5mm thick nitrile rubber from Gardico, a local rubber supplier to
rest the tank on - I ended up having to double it up to get proper tension
on the hold-down brackets, but the tank feels super solid now. I was able
to re-use much of the existing hose as it was in good condition, although I
ended up needing new new filler and vent hose as the tank's position had
shifted slightly forward.

At the end of the day the project ended up being a lot of work (I also
created new floorboards for the lazarette) but I'm glad to have it all done
in time for some nicer weather here in Seattle.

Andrew
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