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747-400
MAINTENANCE MANUAL
CAUTION:_______ TIGHTEN THE BRAKE BLEEDER ADAPTER FITTING TO 90 - 110
POUND-INCHES. IF YOU TIGHTEN THE BLEEDER ADAPTER FITTING
TO MORE THAN 110 POUND-INCHES YOU CAN DAMAGE THE FITTING
OR THE BRAKE ASSEMBLY.
(a) Tighten the brake bleeder adapter fitting to 90 - 110 pound-inches.
NOTE: The specified torque values are for installation of the
____ bleeder adapter fitting in the brake assembly. The maximum torque value for the brake bleeder valve, which you do not operate in this procedure, is 45 pound-inches.
S 865-103
(8)
Pressurize hydraulic system No. 4 (AMM 29-11-00/201).
S 845-086
(9)
Set the parking brake.
S 095-087
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ DOOR LOCKS FROM THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(10)
Do this task: Remove the Door Locks on all landing gear" (AMM 32-00-30/201).
S 095-089
(11)
Do this task: Removal of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
S 865-105
(12)
Remove all hydraulic power if it is not necessary (AMM 29-11-00/201).
S 865-050
(13)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P6, Main Power Distribution Panel 1) 6F1, IGN 1 ENG 1 2) 6K19, IGN 2 ENG 1 3) 6G19, STBY IGN ENG 1 4) 6F2, IGN 1 ENG 2 5) 6K20, IGN 2 ENG 2
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747-400 MAINTENANCE MANUAL
6) 6G20, STBY IGN ENG 2
7) 6F3, IGN 1 ENG 3
8) 6K21, IGN 2 ENG 3
9) 6G21, STBY IGN ENG 3
10) 6F4, IGN 1 ENG 4
11) 6K22, IGN 2 ENG 4
12) 6G22, STBY IGN ENG 4
S 865-046
(14) Remove electrical power if it is not necessary (AMM 24-22-00/201).
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32-41-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
HYDRAULIC BRAKE SYSTEM - INSPECTION/CHECK
_________________________________________
1. General_______
A. This procedure contains the visual inspection of the hydraulic brake mechanical control path, brake rods, cranks, and cables for condition and security.
B. To do the visual inspection of the brake system, you must do these steps:
-Open the applicable passenger cabin ceiling panels
-Remove the applicable passenger cabin doorway panels
-Examine the brake system mechanical control path
-Do a check of the brake rods, cranks, and cable mechanism for wear
-
Install the ceiling panels
-
Install the doorway panels.
TASK 32-41-00-206-001
2. Examine Brake Control Path For Wear___________________________________
A. References
(1)
AMM 20-21-03/601, Control Cables
(2)
AMM 25-21-03/401, Main Deck Sidewall Lining Doorway Panels
(3)
AMM 25-22-01/401, Main Passenger Cabin Ceiling Panels
(4)
AIPC 32-41-02, Fig. 1
(5)
AIPC 32-41-34, Fig. 1
(6)
AIPC 32-41-51, Fig. 1
B.
Access
(1)
Location Zone 211 Passenger Cabin - Nose to First Door, LH 212 Passenger Cabin - Nose to First Door, RH 221 Control Cabin, LH 222 Control Cabin, RH 231 Passenger Cabin - First to Second Door, LH 232 Passenger Cabin - First to Second Door, RH 241 Passenger Cabin - Second to Third Door, LH 242 Passenger Cabin - Second to Third Door, RH 243 Area Above Ceiling, LH 244 Area Above Ceiling, RH 251 Passenger Cabin Third to Fourth Door, LH 252 Passenger Cabin Third to Fourth Door, RH 253 Area Above Ceiling, LH 254 Area Above Ceiling, RH
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