What was found
DURING TAXI, L/H MLG RIDGED LINE IS LEAKING WHEN BRAKES ARE SET. (#2 BRAKE). AIRCRAFT RETURNED TO BLOCKS (BTB). DEFERRED #2 BRAKE DUE TO HYD LEAK ON THE LH MLG IAW ABX MEL 37-41-1A. REMOVED AND REPLACED #2 BRAKE HYD LINE (REF 32-41-62-05 FIGURE 52 PG ITEM 197) IAW B767 AMM 20-10-09. LEAK CHECK GOOD, REACTIVATED #2 BRAKE AND REMOVED AND STOWED DEACTIVATION IAW B767 AMM 32-00-00 IDG 32-41-1. PLACARDS REMOVED. ALL MX PROCEDURES COMPLETE THIS CLEARS DI 65374. REF LP 38988-47/1. AIRCRAFT RETURNED TO SERVICE.