What was found
DURING C-03 CHECK FUNCTIONAL CHECK OF EMERGENCY EVACUATION SYS, IDENTIFIED A WEAK DOOR DAMPER CYLINDER AT R-2 DOOR. MAINT R&R R-2 DOOR DAMPER CYLINDER IAW AMM. ADJUSTED PERCUSSION BELL CRANK FINGER IAW AMM, OPERATIONAL CHECK C/W IAW AMM SUBTASK 52-10-00-614-050. VENDOR TEARDOWN OF DAMPER CYLINDER ASSEMBLY S/N 455 CONFIRMED FAILURE OF UNIT. THE FRONT AND REAR CUPS WERE FOUND LEAKING DUE TO WORN SEALS, THE PERCUSSION ASSY FOUND CONTAMINATED, & ALSO FOUND RUSTED SPRING WASHERS IN REGULATOR VALVE ASS. REPLACED 15 EACH VARIOUS SEALS, 12 EACH SPRING WASHERS, UNIT WAS REPAIRED PER CMM.