AN MD80 MECH RPTS THAT THE FLC RETURNED AND LANDED WHEN THEY NOTED SEVERE VIBRATIONS AND RECEIVED AN UNSAFE GEAR INDICATION AFTER TKOF. THE RPTR STATES HE HAD INADVERTENTLY LEFT THE NOSE GEAR DOORS SECURED OPEN WITH THE BOLT HEADS INSTALLED IN THE WRONG DIRECTION; CAUSING THEM TO SNAG GEAR MECHANISM CABLES.

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PLT RPTED HAVING NOISY STEERING ACTION AND WAS ADAMANT THAT LUBE JOB NOT BE DEFERRED. I TOOK ACTION TO LUBE THE STEERING MECHANISM; AND IN THE PROCESS; THE NOSEWHEEL WELL DOORS WERE OPENED. UPON COMPLETION OF LUBING THE NOSE STEERING MECHANISM; THE ACFT WAS DISPATCHED INADVERTENTLY WITH THE GEAR BAY DOORS OPEN. THE PROB WAS DISCOVERED UPON TKOF WHEN THE PLT NOTICED SEVERE VIBRATIONS. GEAR WAS CYCLED BUT NEITHER MECHANICAL NOR LIGHT SAFE INDICATIONS WERE OBSERVED; INDICATING AN UNSAFE GEAR. EMER EXTENSION WAS TRIED WITH EMER HANDLE; WITH NO SUCCESS. UPON RESTORING EMER HANDLE TO NORMAL POS GEAR CYCLED DOWN AND LOCKED WITH BOTH VISUAL INDICATORS OBSERVED. ACFT ACCOMPLISHED SAFE LNDG. CONTRIBUTING FACTORS TO INCIDENT WERE BOLTS INSTALLED WITH THE HEAD IN THE WRONG DIRECTION SNAGGING CABLES (AS RPTED TO ME BY RECEIVING LEAD). I WAS ASSIGNED TO 2 GATES. THIS ACFT WAS BEHIND SCHEDULE WITH A SHORT TURNAROUND TIME. I COULD NOT FIND TOOLS OR GREASE. I HAD TO TRAVEL TO THE MAINT HANGAR TO FIND GREASE TO SVC THE EMPTY GREASE GUN. I HAD RECEIVED AN UNSCHEDULED ACFT PRIOR TO THIS ACFT'S ARR. IT WAS NOT MY STANDARD SHIFT AND I WAS UNFAMILIAR WITH RELOCATION OF EQUIP. OTHER PERSONNEL WERE BUSY ON OTHER ACFT; INCLUDING THE LEAD. THE UTILITY PERSON WAS UNTRAINED IN THE DISPATCH OF THE DC9 TYPE GEAR DOORS INVOLVED IN THIS DISPATCH. INCIDENT COULD POSSIBLY BE PREVENTED BY BETTER TRAINING IN THE LOCATION AND RELOCATION OF SUPPLIES AND TOOLING AT GATE AREAS; ENSURING REFILLING AND RESTOCKING OF USED SUPPLIES; PAINTING THE LEADING EDGE OF NOSE BAY DOORS RED ON DC9 TYPE ACFT AS A VISUAL AID; AND TRAINING OF NON MAINT PERSONNEL INVOLVED IN THE DISPATCH OF ACFT IN REGARD TO NOSE BAY DOORS.