S 712-020
(6)
Do the transducer spin test to make sure that the correct brake releases when the transducer movement has stopped (Ref 32-42-00/501).
S 022-007
(7)
Remove the brake system control unit (Ref 32-42-01/401).
S 752-007
(8)
Do a bench test of the brake system control unit.
S 022-008
(9)
Remove the related anti-skid control valve (Ref 32-42-02/401).
S 752-009
(10)
Do a bench test of the anti-skid control valve.
TASK 05-51-25-202-009
3. Multiple Flat Spotted or Blown Tire Check_________________________________________
A. References
(1)
05-51-201, Hard Landing or High Drag/Side Load Landing Condition
(2)
29-11-29/201, Return Module
(3)
32-41-15/601, Landing Gear Brake Unit
(4)
32-42-00/501, Brake Control System
(5)
32-42-01/401, Brake System Control Unit
(6)
32-42-02/401, Antiskid Modular Assembly
(7)
32-44-04/401, Parking Brake Module
B. Procedure
S 212-018
(1)
Do the Phase I and Phase II examinations of the Hard Landing or High Drag/Side Load Landing Condition procedure (Ref 05-51-05/201).
S 212-010
(2)
Examine the brakes for correct operation and condition (Ref 32-41-15/601).
S 212-011
(3)
Do the anti-skid system test to make sure the brake system control unit operates correctly (Ref 32-42-00/501).
S 712-012
(4)
Do the anti-skid system brake release test on the damaged wheels to make sure the brake releasees correctly (Ref 32-42-00/501).
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A
747-400 MAINTENANCE MANUAL
(5) S 212-013Examine the hydraulic return filter. Make sure that the hydraulic return filter is not partially or fully blocked (Ref 29-11-29/201).
(6) S 212-014Examine the hydraulic lines and electrical wiring. Make sure the hydraulic lines and electrical wirirng are installed correctly.
(7) S 712-015Do the transducer spin test to make sure that the correct brake releases when the transducer movement has stopped (Ref 32-42-00/501).
(8) S 712-019Do a check of the parking brake valve for correct operation. Make sure that the valve is completely open when the parking brake is released (Ref 32-44-04/401).
(9) S 022-016Remove the related anti-skid control valve (Ref 32-42-02/401).
S 752-017
(10)
Do a bench test of the anti-skid control valve. S 022-017
(11)
Remove the brake system control unit (Ref 32-42-01/401). S 752-018
(12)
Do a bench test of the brake system control unit.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
HOT OR COLD BRAKES CONDITION - MAINTENANCE PRACTICES
____________________________________________________ (CONDITIONAL INSPECTION)
______________________
1. General_______
A. One task is supplied in this procedure. The task is hot or cold brakes conditional inspection.
B. This task examines a single hot brake, a single cold brake, and all brakes on the left or right side of the airplane hot or cold.
TASK 05-51-26-202-001
2. Hot or Cold Brake Conditional Inspection________________________________________
A. References
(1)
32-41-00/201, Hydraulic Brake System
(2)
32-41-00/501, Hydraulic Brake System
(3)
32-41-15/601, Landing Gear Brake Unit
(4)
32-42-00/501, Brake Control System
(5)
32-42-01/401, Brake System Control Unit
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