S 722-048
(11)
Do the Brake System BITE Test procedure in the "Ground Tests - Brake Control System" task (AMM 32-42-00/501).
S 722-187
(12)
Do the Brake Release Test with the alternate brake hydraulic system (hydraulic system No. 1 or 2) at the wheel location where you installed the new component (AMM 32-42-00/501).
NOTE: The Brake Release Test procedure is in the "Ground Tests -
____
Brake Control System" task.
S 862-049
(13)
Pressurize hydraulic system No. 4 (AMM 29-11-00/201).
S 862-050
(14)
Set the parking brake.
S 842-051
(15)
Remove the pressure from hydraulic systems No. 1 and 4 (AMM 29-11-00/201).
S 092-052
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCK CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(16) Remove the main landing gear door locks and close the doors (AMM 32-00-30/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-42-02
ALL ú ú 01 Page 215 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
TASK 32-42-02-022-053
6. Hydraulic Fuse (Normal Antiskid Module) - Removal
_________________________________________________
A. References
(1)
AMM 29-11-00/201, Main Hydraulic Supply System
(2)
AMM 32-00-30/201, Landing Gear Door Locks
(3)
AIPC 32-42-02
B.
Access
(1)
Location Zones
137 Body Landing Gear Well - Left (Aft bulkhead, body gear wheel well) Normal Antiskid Module - Left Body Gear
138 Body Landing Gear Well - Right (Aft bulkhead, body gear wheel well) Normal Antiskid Module - Right Body Gear
571 Rear Spar to Landing Gear Support Beam, LH (Above the wing gear trunion) Normal Antiskid Module - Left Wing Gear
671 Rear Spar to Landing Gear Support Beam, RH (Above the wing gear trunion) Normal Antiskid Module - Right Wing Gear
C. Prepare for the Removal
S 492-054
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASKS BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Do this task: "Installation of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).
S 492-203
(2)
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
(3)
Make sure that the chocks are installed at all wheels.
S 862-204
(4)
Remove the pressure from hydraulic system No. 4 and the reservoir (AMM 29-11-00/201).
(5)
Release the parking brake.
S 492-056
S 842-205
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-42-02
ALL ú ú 01 Page 216 ú Jun 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 862-059
(6)
Release the hydraulic fluid from the brake accumulator with these steps:
(a)
Push-in on the brake pedals fully 10 times.
(b)
Look at the HYD BRAKE PRESS gage on the captian's instrument panel, and make sure the pressure stay the same after the last time you press the brake pedals.
D.
Remove the Hydraulic Fuse (Normal Antiskid Module) (Fig. 203)
S 032-060
(1)
Disconnect the hydraulic line from the hydraulic fuse.
S 492-061
(2)
Install a plug on the hydraulic line.
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