"Troy" wrote in message
ups.com...
seeing it. What does happen , depending on how it was welded, is that you
have two materials (the weld and the exchanger) cooling at heating at
different speeds which could creat another crack, generally right beside
the
weld you made on the repair.


It was suggested that if you bolt a steel plate on both sides of the
crack that the repair would be sufficiant until there is time to
actually replace the entire unit. What is your opinion on that?

Troy
There is a procedure on that Troy, but generally done as an absolute
last resort to last only until the new unit gets there. Please get in touch
with me at Morriswelding-at-sasktel-dot-net and be armed with LOTS of
digital photos! Jimi