What was found
TE FLAP DISAGREE, EMERGENCY DECLARED. ON INITIAL TROUBLESHOOTING NO EICAS MSG NOTED FOR TE FLAP DISAGREE. PUT FLAPS BACK TO NORMAL CONFIG FROM ALT MODE. BITE CHECKED ALL 3 FSEU S AND NO FAULTS NOTED. FLAP SELECTOR LEVER CLEANED AND LUBED AS PRECAUTION. PLACED FLAPS TO 30 DEGREES. ALL THE WAY DOWN TO LAST DETENT WITH NO ISSUES. ALL FLAP SURFACES MOVED FREELY AND IN SEQUENCE. WITH FLAPS DOWN ALL THE WAY, CHECKED ALL 8 FLAP TRANSMISSION UNITS FOR A OVERLOAD INDICATOR TRIPPING AND FOUND NOT TRIPPED. ALL 8 UNITS HAD FLUIDE IN IT TOO. JACK SCREWS WERE SMOOTH TO THE TOUCH AND FREE FROM DIRT OR DEBRIS. CYCLED FLAPS MULTIPLE TIMES AND UNABLE TO DUPLICATE THE FAULT. NO HISTORY FOR PASS 180 DAYS. THEREFORE, TE FLAPS OPS CHECK GOOD. A/C RETURN TO SERVICE.