What was found
PDIS 592 32-12 3641 25JUL19 MEM OPEN U LOGPAGES:3095639 AFTER T/O GEAR SHOWED LEFT MAIN PRIMARY/SECONDARY INDICATION UNSAFE. CYCLED GEAR AND GOT GOOD DOWN INDICATION. AFTER FOLLOWING QRH, CYCLED GEAR AND PROBLEM REMAINED. ALL INDICATIONS FOR GEAR DOWN WERE GOOD. LANDING SAFELY. SHGN 25JUL19 09:01 MEM U DEBRIEF FROM CREW: GEAR WOULD NOT RETRACT. LEFT MAIN GEAR DID NOT LOCK IN THE UP POSITION. CREW PERFORMED AN AIR RETURN. UPON ARRIVAL, FOUND #6 MLG BRAKE WET FROM HYDRAULIC FLUID LEAKING. SHGN 26JUL19 03:36 MEM REMOVED AND REPLACED LT MLG HOSE ALIGNMENT BRACKET REF SMP. BLED AND LEAK CHECKED FLEX LINE REF AMM 32-37-01-4, CHECKS GOOD. PROTECTION SHIELD STILL NEEDS TO BE INSTALLED. INSTALLED NEW BRACKET ASSEMBLY AND PROTECTION SHIELD, REINSTALLED HYDRAULIC HOSES AND ELECTRICAL HARNESS TO PROTECTION SHIELD, AND RECONNECTED MAIN LANDING GEAR TORQUE LINKS ON LEFT HAND MAIN LANDING GEAR REFERENCE AMM 32-11-12-4.