What was found
AFTER TAKEOFF FROM SBKP ALL 4 RED GEAR LIGHTS REMAINED ILLUMINATED AT BOTH PILOTS AND FLT ENG POSITIONS. RAN RED TABS, CYCLED GEAR PER CHECKLIST. ALL 4 RED LIGHTS REMAINED ON. SLOWED A/C TO 210 KNOTS (15DEG./EXT) RECYCLED GEAR AGAIN ALL 4 RED LIGHTS EXTINGUISHED. CONTINUED TO MEM. PERFORMED OPS CHECK OF POSITION AND WARNING SYSTEM. GEAR CONTROL HANDLE "STICKY" AND CONTAMINATED WITH DEBRIS. WHEN HANDLE WAS PULLED STRAIGHT OUT INDICATION WOULD NOT CHANGE FROM GREEN TO RED. PERFORMED CLEANING AND LUBE OF LANDING CONTROL MECHANISM DC-10-30 MM 32-31-02-7. PERFORMED OPS CHECK AGAIN. CHECKS GOOD.