What was found
AFTER TAKEOFF CLIMBING THROUGH 15000 FT OTBD BRAKE PRESS CAUTION MSG. COMPLIED WITH AOM 1 PROCEDURES. PRESS FLUCTUATED BETWEEN 0 PSI - 300 PSI ON THE OTBD BRAKES PSI. WE DESCENDED FOR APPROACH & PSI WENT TO 0 PSI & REMAINED UNTIL APPROXIMATELY 500 FT ABOVE THE GND. UPON LANDING OTBD BRAKE PSI WENT TO 4000 PSI. THIS HAPPENED TO HYD SYS NR 2. BRAKE TEMP SHOWED 0 AT ALL TIMES. COMPLIED WITH ERS-CR-2000-006 RELOCATED GND STUD HOLE IAW SRM 51-40-11, OPERATIONS CHECKED GOOD IAW NRWC 515-ORD-01494 FOR ADDITIONAL CORRECTIVE ACTION.