What was found
LEFT MAIN LANDING GEAR UNSAFE ON DEPARTURE. ATTEMPTED PROCEDURES IAW QRH FOR "GEAR PRIMARY OR SECONDARY LIGHTS ILLUMINATED WITH GEAR HANDLE UP" BOTH LIGHTS REMAINED ON . DUMPED 96K FUEL ON RTB LANDING AND ROLLOUT UNEVENTFUL. R&R MLG CONTROL VALVE PER MM 32-31-20-4 OPS LEAK/CHKS GOOD. ADJUSTED MLG GEARWELL DOOR PUSHRODS PER MM 32-31-00-5. DOORS OPS CHECKS GOOD. PERFORMED LANDING GEAR SWING. ALL INDICATIONS /FUNCTIONS NORMAL. A/C OK FOR SERVICE.