What was found
FLT 929 - MTY-MEX - AIRCRAFT RETURNED TO GATE, AFTER RETRACTING LANDING GEAR, HAD STRONG VIBRATION. AIRCRAFT RETURNED WITH RIGHT NOSE LANDING GEAR DOOR OPEN. FOUND FORWARD DOOR LINK LEVER BYPASS DID NOT WORK, DOOR LINK WAS REPLACED IAW MM 32-22-01, ALL CORRECT.