What was found
AFTER TAKEOFF UNABLE TO RETRACT THE LANDING GEAR. REMOVED GEAR HANDLE ASY P/N 9914551-4 S/N 0222. INSTALLED HANDLE P/N 9914551-4 S/N 0162. REMOVED LOGIC MODULE P/N 9914728-2 S/N 151 AND INSTALLED LOGIC MODULE P/N 9914728-2 S/N 350. OPS CHECKS FAILED. TROUBLESHOT TO BROKEN WIRES AT NOSE GEAR UPPER TORQUE LINK GLIDE. FABRICATED NEW WIRE HARNESS WITH NEW CONNECTOR AND OPERATIONAL CHECK GOOD. ALL WORK IAW CH'S 24-53-00 AND 32-60-00 OF THE CE750 MM