What was found
DURING OVERHAUL, THERMOSTATIC BYPASS WAS INSPECTED. IN ADDITION TO CRIMP NUT BEING LOOSE, SNAP RING THAT HOLDS BODY OFF VALVE WAS FOUND TO HAVE EXCESSIVE PLAY. DISSASSEMBLY SHOWED SNAP RING WORN APPROXIMATELY 50 PERCENT AND BRASS PORTION OF PLUNGER THAT IT SEATS ON IS BROKEN.