What was found
HAD GEAR DISAGREE WARNING MSG AT GEAR RETRACTION. RAN QRC\QRH . GEAR SUCCESSFULLY LOCKED IN DOWN POSITION / INTERROGATED MDC FOUND B1 005969. PREFORMED TROUBLESHOOTING IAW CRJ 700 FIM 32-31-00-810-804. PREFORMED OPERATIONAL CHECK IF THE LANDING GEAR EXTENSION AND RETRACTION SYSTEM IAW CRJ 700 AMM 32-30-00-710-801. REMOVED AND REPLACED PRIORITY BALANCED RELIEF VALVE IAW CRJ 700 AMM 29-12-05-000/400-802. LEAK CHECK GOOD. FAULT REMAINED. REMOVED AND REPLACED LANDING GEAR SELECTOR VALVE IAW CRJ 700 AMM 32-32-10-000/400-801. LEAK CHECK AND OPS CHECK GOOD.