What was found
RIGHT FUEL TANK 1 PUMP INOPERATIVE. LOW PRESS IN CLIMB WITH 2.6 IN RT WING TANK. FOUND PUMP TRIPPING THE CB, REPLACED NR 1 RT FUEL PUMP IAW AMM 28-21-51, NO HELP. PUMP DOES NOT OPERATE WITH SWITCH ON. REPLACED 18QA CONNECTOR, 54QA CONNECTOR & CB 2QA. NO HELP. TROUBLESHOOTING FOUND OPENS IN WIRING BETWEEN 18QA PINS 1 & 5 TO 22QA C & B. SUSPECT OPEN IN WIRING BAD IN CHANNEL FROM PUMP CONNECTOR. FOUND WIRES BURNED AT 90 DEGREE BEND WHERE HARNESS ENTERS WIRE HOUSING AT WING SKIN IAW COA 404500 FIG 2 SHEET 2. REPLACED FUEL 106589 PUMP HARNESS BETWEEN 22QA CONNECTOR & JUNCTION BOX 4070VN & SPLICED IAW COA 404500 STEP 4 B 2 >I. FUEL PUMP OPERATIONS CHECKED OK.