What was found
APPROXIMATELY ONE MINUTE AFTER TAKEOFF THE TRIM WHEEL FROZE. NEITHER THE ELECTRIC TRIM OR MANUAL PRESSURE WOULD MOVE THE WHEEL. PUT MORE FORCE INTO MOVING THE WHEEL MANUALLY THAN NORMAL AND THE WHEEL BROKE LOOSE AND ALL TRIM FUNCTIONS RETURNED TO NORMAL. TRIM CHECKED FINE IN PREFLIGHT/BEFORE TAKEOFF AND ALSO TESTS FINE ON POSTFLIGHT. INSPECTED ELEVATOR TRIM CABLES AND ROUTING , NO DEFECTS NOTED. FOUND BLACK COLORED GREASE COMING FROM RT & LT TRIM ACTUATORS AND ABNORMALLY EXCESSIVE AMOUNTS OF GREASE ON TRIM CHAINS AND OUTSIDE OF ACTUATORS. REMOVED PUSH PULL ROD BOLTS AND FOUND ONE ACTUATOR ROD ON EACH ACTUATOR GRITTY/ BONDING WHEN TURNED. REMOVED RT & LT ELEVATORS, REMOVED AND REPLACED RT & LT ELEVATOR TRIM TAB ACTUATORS IAW MM 27-32-03. RE-INSTALLED RT & LT ELEVATORS IAW MM 27-31-01. PERFORMED ELEVATOR TRIM TAB SYSTEM RIGGING IAW MM 27-31-00. ELEVATOR AND ELEVATOR TRIM TAB TRAVEL CHECKS GOOD IAW MM 27-31-00-221. CLOSED ALL ACCESS PANELS.