What was found
PILOT REPORTED THAT WHILE EXTENDING THE GEAR, THE LT GEAR INDICATOR DID NOT ILLUMINATE, IN TRANSIT LIGHT WAS NOT ILLUMINATED, RAN QRH CK LIST AND MANUALLY PUMPED THE GEAR DOWN, STILL DID NOT RECEIVE 3 GREENS, PERFORMED GPWS TEST HAD NO WARNING HORN, LANDED WITH NO FURTHER INCIDENT. MX CLEANED AND RERACKED THE LT GEAR DOWNLOCK/SAFTEY SWITCH AND ACTUATOR CONNECTOR PLUGS, RETRACT TEST CHECKED GOOD.