Relieving Accumulator/Line Pressure
1. Remove bleeder cap from maintenance bleeder on modulator unit, then attach a suitable wrench to bleeder.Fig. 81 Brake System Pressure Relief:
2. Connect a rubber tube to bleeder and place other end in a container, Fig. 81.
3. While holding tube in hand, loosen maintenance bleeder 1/8 to 1/4 turn and collect fluid in container. Do not loosen bleeder too much; brake fluid is under high pressure and can burst out.
4. Tighten maintenance bleeder to specification.