16. BRAKE SYSTEM MXU 550EXi/MXU 500i 6. Repeat these steps until the brake system is free of air. Then tighten the bleed valve nuts. Torque: 0.6 kgf-m (6 Nm, 4.32 lbf-ft) When bleeding air from the brake system, the brake fluid level should be kept over 1/2 of the brake reservoir height (brake pedal). Bleed Valve Bleed Valve 16-22