Both sensors successfully replaced!
Apparently, it was a simple bolt on bolt off affair.
This R&R is best done with the engine cold, and the radiator cap removed to release whatever pressure there may be. (Thanks, Guido!) The area was pretty tight though, and only incremental movements were allowed of the socket wrench. A bit more tedious installing (due to tightenting) than removing because of this.
Stan, the black sensor replacement part came with a crush washer and the old one was replaced. The blue sensor replacement part did not come with a crush washer, and nor did the one I removed. Is this normal?
[Edited by rainmaker on 07-24-2001 at 12:56 AM]