I arrived at the plastic welder's shop almost right on time. A little less than two hours later, everything was repaired, I had enough put back together to get me home and there is no sign of a leak.
We ended up taking out the small part of the compartment floor that I replaced. Even then, it was a really long arm stretch for him to get to tank crack. When we got the patch off, it was pathetic. It is a real bloody wonder that it lasted as long as it did.
He had a heating iron that had a channel through the top, above a plate that looked like a really tiny version of a clothes iron that had been attached to a pole. There are no controls, just a spot for compressed air and the heating coil. He let the iron warm up and agreed that it was between 300-350 degrees. He laid up a bead of he plastic weld directly over the crack and then laid alternating beads on either side of it. I could see that he was trying to spread the repair surface about 3/4" on either side. We put water into the tank up over that spot and there was no sign of a drip.
- 3.5 hours of time round trip to get there
- 75 miles of diesel fuel round trip
- $200 fee for the work
Feeling good that the tank is repaired without any more effort from me - PRICELESS!
I'm going to fill the tank and let it sit over night, just to be sure but I feel very secure about the repair. I'll be re-installing the supports on the back wall of the compartment but will be adding more to them to actually support the tank in that area. I do have a about 2-3 hours worth of work to put everything that was taken apart back together but I have plenty of time for that.
Thanks again to all who contributed to the thread. My takeaway, now that I've seen the actual repair in action, is to find and purchase the plastic welder if I ever have a tank problem again. I'm working on a major bathroom remodel project at the house now but as soon as I get that finished, I'm going to figure where to purchase the welding device. It would be easy enough to practice welding milk cartons together.