Re: '49 5 HP Atlas Royal Restoration
Yeah, I've made some strap wrenches on special order, but what I make is high quality--far more than you need to work on one little ol' Gale. You can make yourself an El Cheapo that will work. Merely nail a piece of nylon strapping to a piece of 2 x 2 lumber and you've made yourself a special tool.
As for the powerheads, yes they can be rebuilt (pistons & rings, etc.), but taking the side covers off is verboten. I've tried it and regretted it---more than once. Ok, the disclaimer is I haven't tried it with some of the modern sealants on the market. But the gasket and Permatex method was regrettable. I suppose if I had one that really, really needed to come apart, I might try it again with some modern sealants. I never have been able to figure out what OMC used for a sealant.