What was found
GEAR WOULD NOT RETRACT AFTER TAKEOFF, GEAR HANDLE WOULD NOT MOVE INTO THE UP POSITION. REPLACED THE LT MLG SQUAT SWITCH WITH A NEW SWITCH IAW MM 32-61-00, OPS CHECKED GOOD. PERFORMED MLG HYD SYS ADJUSTMENT TEST WHICH INCLUDES ASSOCIATED SQUAT SWITCH SYS, FLAP POSITION, T/R 32-01-00.