What was found
RAISING GEAR ON T/O NOSE GEAR DOOR LIGHT REMAINED ON. ILLUMINATED ON BOTH SYS AS SPEED INCREASED TO 200 KNOTS, NOISE AND VIB WAS FELT FROM THE NOSE GEAR. NOISE AND VIB REMAINED UNTIL GEAR WAS LOWERED AGAIN, AND THEN THE LIGHT WENT OUT. FOUND FWD LEFT GEAR DOOR MECHANISMS STICKY AND DRY. CLEANED AND LUBED AND CHECKED RIGGING. OPS CHECKED REF M/M 32-31-00-5 AND 32-00-00-5. OPS CHECKED GOOD AND RESTORED A/C TO NORMAL CONFIG AND IS OK FOR SERVICE.