What was found
THE BUMP IN THE NIGHT OCCURRED AT FL280 LEVEL FLIGHT FOLLOWED BY A NOSE RED UNLOCK LIGHT ON. STAYED ON FOR 20 MIN UNTIL LOWERING THE LANDING GEAR, 3 GREEN, NO RED, NO LIMITATIONS EXCEEDED. DISASSEMBLED NOSE GEAR STRUT, REPLACED SEALS, RETORQUED ORFICE ASSY. REASSEMBLED NOSE STRUT IAW CESSNA 750 MM CH 32-20-02, SERVICED IAW 12-10-38. PERFORMED GEAR FUNCTIONAL CHECK IAW CH 32-41-02, OPERATIONAL CHECK GOOD.