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Jim,
I still maintain that you should remove the access door inside the lower part of the boom, just behind the strut to wing fairing... there are 28 screws holding the "U" shaped panel on the boom and once that's off, there's an access plate/door with another 28 screws up above the trim cable to remove... and it is through this door you can access the hose clamps.
Now, what you may run into is this: whoever did the last install of the hose clamps MAY have installed them through the wing access covers up topside, and if they did, chances arr you won't be able to loosen them from below. We discovered this little scenario on our outboard tank in the left wing, but we were able to manage a specially made "L" shaped screwdriver up through the bottom inspection panel to reach it, but it was a pain - big time.
For others reading this thread, if you have a Robertson/STOL conversion on your bird, and again depending on the model year of your Skymaster, Robertson may have removed the outboard factory tank and installed a slightly smaller tank so as to accomodate the extra linkages necessary to run the ailerons in the flap mode. And if they were in a hurry and not paying attention, you may have some interconnect hose clamps that are facing upward, instead of downward so they'd be accessible through the normal wing inspection access panel. Of course, what I'm stating here is dependent on the model year of your Skymaster, as each year had a different tanking system. Our's is a 1977 P-model and it has four tanks per wing and because we have the Robertson/STOL conversion, our usable fuel is 71.5 gallons per side instead of the nominal 74.
Hope this helps.
SkyKing
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