What was found
DTW - FLT 1703 - ON TAKEOFF AT CLE, RIGHT MAIN GEAR RED UNSAFE LIGHT STAYED ILLUMINATED. ACCOMPLISHED PROCEDURES PER QRH AND CONTINUED TO MYR WITH HYDRAULIC PUMPS ON HIGH. THE GEAR UNSAFE LIGHT EXTINGUISHED UPON GEAR EXTENSION AT MYR. (THREE GREEN ON AND ALL RED EXTINGUISHED). NORMAL HYDRAULIC PRESSURE AND QUANTITY THE ENTIRE FLIGHT. FOUND M-PIN (RT DOOR LATCH) OUT OF ADJUSTMENT. ADJUSTED RT MAIN GEAR DOOR LATCH ASSY. OPS CHECK DOOR. UNSAFE LIGHT IS EXTINGUISHED IN UP AND LOCK POSITION IAW DC-9 MM 32-31-4. (X)