What was found
AFTER GEAR RETRACTION, GEAR DISAGREE MESSAGE DISPLAYED (AFTER APPROX 10-15 SECS) AFTER GEAR LEVER MOVEMENT LT MAIN GEAR NOT SAFE INDICATION. C/W QRH LANDING EXTENDED AND INDICATED DOWN AND LOCKED. VISUALLY INSP ALL 3 LANDING GEAR. FOUND NO EVIDENCE OF HYD LEAKS OR MECHANICAL FAILURE ON ANY GEAR. C/W "M" ACTION FOR MEL 32-30-01 GEAR PINS INSTALLED W/FLAGS REMOVED AS REQUIRED. REMOVED AND REPLACED UPLOCK ACTUATOR ON LT MLG IAW AMM 32-32-05. PERFORMED LEAK CK IAW AMM 32-00-05 AND PERFORMED OPS CK IAW AMM 32-30-00 AND MANUAL RELEASE IAW AMM 32-34-00. OPS CK GOOD. (K)