What was found
DURING GEAR EXTENSION, GEAR WOULD NOT ACHIEVE THE DOWN AND LOCKED POSITION (ALL 4). SECONDARY DISPLAY SHOWED UNSAFE ON ALL 4 GEARS. GEAR DOORS DID OPEN. GEAR CYCLED AND ACHIEVED A SAFE CONDITION, ALTHOUGH TOOK LONGER THAN NORMAL. T/S PER FIM 32-30-00 PSEU RTS AND SENSORS ALL OK. CLEANED AND LUBED LANDING GEAR CONT MECH PER MM 32-31-00-7. JACKED A/C & PERFORMED GEAR SWING SEVERAL TIMES PER MM 07-11-00-2 & 32-31-00-5. ALL FOUND NORMAL ALL EXTEND TIMES WITHIN MM LIMITS. REPLACED LANDING GEAR HANDLE POS SW PER MM.