What was found
AFTER TAKEOFF, GEAR DID NOT RETRACT. THREE GREEN GEAR LIGHTS, ONE RED GEAR UNSAFE LIGHT, ANTI-SKID LIGHT AND THE BRAKE LOW PRESSURE LIGHT, REMAIN ILLUMINATED FOR ABOUT FIVE MINUTES, RAN ABNORMAL CHECKLIST. AFTER THE GEAR HANDLE WAS SELECTED DOWN, EVERYTHING NORMAL. TROUBLESHOT SYSTEM, RANG OUT WIRING FROM LANDING GEAR CONTROL PCB TO MLG CONTROL VALVE, WITH GEAR HANDLE UP & BOTH SQUAT SWITCHES IN AIR, HAVE POWER TO LANDING GEAR CONTROL VALVE. DUPLICATED PROBLEM. RANG OUT SQUAT SWITCHES. BOTH SQUAT SWITCHES CONTINUITY CHECKED GOOD. JACKED AIRCRAFT, NOTICED RT OLEO GRABBING AND POPPING WHILE AIRCRAFT WAS COMING OFF GROUND. FOUND OLEO TO BE UNDERSERVICED AND LEAKING FLUID CAUSING IT TO NOT FULLY EXTEND. REMOVED RT MLG OLEO ASSEMBLY. INSTALLED STRUT IAW CMM 32-10-04.