What was found
F/A REPORTS L1 DOOR HARD TO CLOSE WITH LOUD NOISES COMING FROM THE HINGE AREA. GROUNDED - YES. FOUND UPPER HING ARM OF L1 DOOR TO MAKE CRUNCHING SOUND WHEN CLOSING. FOUND DOOR TO BE SAGGING INDICATED BY WEAR OF TRACK GUIDE AND BALL. LUBRICATED L-1 DOOR MECHANISM'S & COMPONENTS, NOISES ARE NOW GONE & DOOR OPERATES SMOOTHLY REF B737-800 AMM 12-25-11-640-801- & 12-25-1-640-802. ADJUSTED L1 DOOR REF AMM 52-11-00-820-801. L1 DOOR SYSTEM TESTS GOOD REF AMM 52-11-00-700-804.