Originally Posted by HamiltonLJ
There's a 1/2" square hole in the tensioner arm! Insert 1/2" ratchet pull to release tension and pop the belt off! Do the same to reinstall.
YES! READ: Do not remove the pulley wheel. The tensioner arm is a spring-loaded device... all you need to do is put a ratchet or possibly a breaker bar (for leverage) and un-spring it (by going counter-clockwise, I believe). Belt should come right off.
Older TJ's like mine actually used the archaic threaded rod adjustment... which made zero sense....
will only take 5 minutes to change the belt...count your blessings!