What was found
GEAR WOULD NOT RETRACT AFTER TAKEOFF, HANDLE WOULD NOT MOVE. HEARD A LOUD "THUMP" IN THE NOSE WHEEL AREA PRIOR TO LANDING AT OUR DIVERSION AIRPORT. CHECKED VOLTAGE AT GEAR HANDLE CONNECTOR PLUG VOLTAGE WAS LESS THAN REQUIRED, CHANGED LANDING GEAR LOGIC MODULE, VOLTAGE CHECKED GOOD. GEAR HANDLE STILL INTERMITTENT, SERVICED NOSE STRUT NO CHANGE. FOUND NLG SQUAT SWITCH STRIKER PLATE AND NLG STRUT UPPER BARREL TO BE LOOSE. LOST 40 PSI OVER A 12 HR PERIOD. INSTALLED REBUILT STRUT. OPS & LEAK CHECKED GOOD IAW 32-20-02.