What was found
AIRCRAFT ARRIVED AT GATE WITH # 4 MLG TIRE SHREDDED AMM: 32-41-11-04-02 R/R #4 TIRE PER ABOVE REF UP TO STEP D 12. WHILE PERFORMING TEST NUMBER 8, #4 TACH IS DRIVEN AT 1500 RPM AND THE RIGHT PEDAL DEPRESSED THE OPPOSITE BRAKE #3 IS ENGAGED. THE #3 TACH IS DOING THE SAME WHILE BEING DRIVEN, THE #4 BRAKE ENGAGES. WE VERIFIED THAT NUMBER #8 TACH IS WORKING PROPERLY. FURTHER TROUBLE SHOOTING REQUIRED. FOUND CROSS LINE DOWNSTREAM OF SERVO-VALVE 18GG AND 14GG. C/W WIRING CK'S AND PERFORMED TEST 8, TEST NOW PASSES. OK FOR SV