What was found
COMPLETE BRAKE FAILURE DURING TAXI OUT. ANTI-SKID LIGHT AND POWER PRESSURE CIRCUIT BREAKER TRIPPED. THEN LOW BRAKE PRESSURE LIGHTS. HYD FLUID ON NOSE GEAR DURING POST FLIGHT. INSPECTED BRAKE SYSTEM FOR SIGNS OF DAMAGE, NONE FOUND. OPS CHECKED BRAKES, COULD NOT DUPLICATE CIRCUIT BREAKER TRIP. REMOVED OLD BRAKE PUMP MOTOR AND INSTALLED OVERHAULED MOTOR. PERFORMED BRAKE BLEEDING, PURGED EMERGENCY BRAKE PNEUMATIC LINES AND PERFORMED ANTI-SKID FUNCTIONAL CHECK. OPS CHECK & LEAK CHECK GOOD. ALL WORK DONE IAW MM 32-44-20. INSPECTED NOSE HEAR FOUND TO BE RESIDUAL FLUID OF EMERG BRAKE SYSTEM CLEANED HYDRAULIC FLUID WITH ALCOHOL IAW MM 32-44-10.