What was found
FLT CREW REPORTED, ON GEAR EXTENSION LEFT MAIN LANDING GEAR GREEN LIGHT DID NOT ILLUMINATE. MLG MANUALLY EXTENDED. A/C LANDED WITH NO FURTHER INCIDENT. MXE FOUND TWO FROZEN PULLEYS ON DOOR SAFETY VALVE CONTROL CABLES. REMOVED AND REPLACED PULLEYS IAW MM 20-20-4. ALSO, FOUND MLG DOOR SAFETY VALVES CABLES WERE OUT OF ADJUSTMENT. CABLES ADJUSTED IAW MM 32-34-0. OPERATIONS CHECK OK. LUBED LEFT MAIN LANDING GEAR IAW MM 12-21-1, PAGE 201. PERFORMED NORMAL AND EMERGENCY GEAR OPERATION IAW MM 32-52-0, PATE 501 AND MM 32-34-0, PAGE 507 TO INCLUDE INDICATION CHECKS. VISUALLY INSPECTED LEFT MAIN LANDING GEAR SIDE STRUT INSTALLATION FROM WHEEL WELL SIDE. NO DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE. (M)