As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: BRAKE APPLICATION WHILE TAXING CAUSED LOUD SQUEALING NOISE AND VIBRATION. REMOVED AND REPLACED LEFT HAND BRAKE METERING VALVE. PER B737-NG AMM 32-41-31 PERFORMED SATISFACTORY BLEEDING UPSTREAM OF THE ANTI-SKID VALVES OPERTIONAL CHECK AND LEAK CHECK ON LEFT HAND BRAKE METERING VALVE. PER B737-NG AMM 31-41-00-870-801, NO ADDTIOINAL DEFECTS NOTED.