TM 9--2350--292--10BLEEDING TRAPPED AIR FROM BRAKE LINES0117 00THIS WORK PACKAGE COVERS:Bleeding trapped air from brake lines1. Turn MASTER switch (1) OFF.2. Slowly depress and release brake pedal (2) until pressure gauge (3) reading is between 100--150 psi (689--1034kPa) (old configuration).3. Slowly pull bleed valve knob (4) and hold open for 5 seconds. Listen for trapped air being released into reservoir.When gurgling sound stops, air in brake lines has been purged. Release bleed valve knob (4) (newconfiguration).NOTEPump motor starts when brake pressure drops below 750 psi (5171 kPa) and shutsoff when brake pressure reaches 950 psi (6550 kPa) (old configuration) and below950 psi (6550 kPa) and shuts off when brake pressure reaches 1100 psi (7584 kPa)(new configuration). Low brake pressure is an indication of air in brake lines.4. Turn MASTER switch (1) ON and charge brake system until pump motor stops (750--950 psi). If pump motordoes not stop, repeat steps 1 through 4 until no air is detected in the brake lines.5. If pump motor does not stop after repeating steps 1 through 4, notify unit maintenance.MAIN SWITCH PANEL1234END OF TASK0117 00--1/2 blank
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