What was found
(CAN) AIRCRAFT WAS POSITIONED ON GATE FOR NEXT FLIGHT. IT WAS THEN FOUND THAT RT MAIN LANDING GEAR PIN COULD NOT BE REMOVED. TROUBLESHOOTING BY MAINTENANCE FOUND ON THE FOLLOWING ON THE RT MAIN LANDING GEAR STABILIZER STAY ASSEMBLY. THE AFT LINED JOURNAL BUSHING (ITEM 305) FOUND TO HAVE EXCESSIVE WEAR (1/16TH 3/32ND) CAUSING THE DOWN LOCK PIVOT POINT LOCK LINK ASSEMBLY (ITEM 280) TO OVERCENTER TOO FAR. THE STAY ASSEMBLY WAS REPLACED PER DHC 8 AMM 32-10-26, OPERATION AND LEAK CHECKS CARRIED OUT WITH NO FAULTS, AND THE AIRCRAFT RETURNED TO SERVICE. REFERENCE MESSIER-DOWTY COMPONENT MAINTENANCE MANUAL 32-10-04 FIG 1, PAGES 1010-1016.