What was found
(CAN) WHEN LANDING GEAR WAS SELECTED DOWN, CIRCUIT BREAKERS TRIPPED, RESET AND GEAR CAME DOWN. LEFT LANDING GEAR WAS LEAKING, CHECKED FLUID LEVEL LOW. FOLLOWING REMOVAL OF LEFT AND RIGHT MAIN LANDING GEAR CYLINDERS, IT WAS NOTED THAT PISTON SHAFT TOO WORN TO ACCOMODATE NEW SEALS. AIRCRAFT HAS 5,538.8 HOURS. NO HISTORY ON PART. REPLACED WITH CLEVELAND (P/N 455-994) CYLINDERS.