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32-42-02
ALL ú ú 01 Page 409 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 714-030
(12)
Push on the brake pedals slowly and fully five times.
S 874-031
(13)
Bleed the brake lines from the antiskid valve to the brakes to remove air caught in the brake lines (AMM 32-41-00/201).
S 214-032
(14)
After five minutes, look for leaks at the fittings of the antiskid module assembly.
S 864-033
(15)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P180, DC Power Distribution Panel
1) 180J7, ANTI-SKID 1-3
2) 180J8, ANTI-SKID 14-16
3) 180F7, ANTI-SKID 2-4
4) 180F8, ANTI-SKID 13-15
5) 180J22, ANTI-SKID 5-7
6) 180J23, ANTI-SKID 10-12
7) 180F22, ANTI-SKID 6-8
8) 180F23, ANTI-SKID 9-11
S 724-034
(16)
Do the Brake System BITE Test procedure in the "Ground Tests - Brake Control System" task (AMM 32-42-00/501).
S 724-086
(17)
Do the Brake Release Test with the normal brake hydraulic system (hydraulic system No. 4) at the wheel locations related to the new component.
NOTE: The Brake Release Test procedure is in the "Ground Tests -
____
Brake Control System" task (AMM 32-42-00/501).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-42-02
ALL ú ú 01 Page 410 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-035
(18)
Set the parking brake.
S 094-037
(19)
Do this task: "Removal of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).
S 094-075
(20)
Do this task: "Removal of the Door Locks on the Body Landing Gear " (AMM 32-00-30/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-42-02
ALL ú ú 01 Page 411 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
TASK 32-42-02-004-038
4. Alternate Antiskid Module Assembly - Removal
____________________________________________
A. General
(1)
The alternate antiskid valve modules are located in the left and right body gear wheel wells. The wing gear modules are on the forward bulkhead (sta. 1350) and the body gear modules on the aft bulkhead (sta. 1480).
B.
References
(1)
AMM 29-11-00/201, Main Hydraulic Supply System
(2)
AIPC 32-42-02
(3)
SSM 32-42-01
(4)
WDM 32-42-14
WDM 32-42-15
WDM 32-42-16
WDM 32-42-17
C.
Access
(1)
Location Zones 118 Electrical & Electronics Compartment, RH (P180 DC Power Distribution Panel)
137 Body Landing Gear Well - Left (Forward bulkhead, body gear wheel well) Alternate Antiskid Module - Left Wing Gear
138 Body Landing Gear Well - Right (Forward bulkhead, body gear wheel well) Alternate Antiskid Module - Right Wing Gear
137 Body Landing Gear Well - Left (Aft bulkhead, body gear wheel well) Alternate Antiskid Module - Left Body Gear
138 Body Landing Gear Well - Right (Aft bulkhead, body gear wheel well) Alternate Antiskid Module - Right Body Gear
D. Prepare for the Removal
S 494-039
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.
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