What was found
APU START FAULT. GROUNDED - YES. FOUND APU FAULT FOR INLET DOOR SHUTDOWN 49-15004. OPS TESTED THE AIR INLET DOOR POSITION SWITCH. FOUND INOP. REMOVED POSITION SWITCH REF B737-800 AMM 49-15-41-000-801. AFTER REMOVAL, FOUND BOTH PUSHRODS ON THE APU AIR INLET DOOR SHEARED AND SEIZED ON THE PUSHROD BEARINGS. REPLACED APU INLET DOOR AND PUSHRODS PER AMM 49-15-22. REPLACED INLET DOOR POSITION SWITCH PER AMM 49-15-44. ADJUSTMENTS AND OPS CHECK GOOD.