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A
747-400 MAINTENANCE MANUAL
 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 722-024
 (12)
 Do the Brake System BITE Test procedure in the "Ground Tests - Brake Control System" task (AMM 32-42-00/501).

 S 722-184

 (13)
 Do the Brake Release Test with the normal brake hydraulic system (hydraulic system No. 4) 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 862-025
 (14) Set the parking brake.
 S 092-026
 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.
 (15) Remove the main landing gear door locks and close the doors (AMM 32-00-30/201).
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747-400 MAINTENANCE MANUAL
 TASK 32-42-02-022-027
 4. Antiskid Valve Assembly (Alternate 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, Fig. 1

 (4)  
WDM 32-42-14, WDM 32-42-15, WDM 32-42-16, WDM 32-42-17

 (5)  
SSM 32-42-01

 B.
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
 C. Prepare for the Removal
 S 492-028
 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 492-198

 (2)  
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).

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MAINTENANCE MANUAL

 S 492-029
 (3)  
Make sure that the chocks are installed at all the wheels.

 S 862-199

 (4)  
Remove the pressure from hydraulic systems No. 1 and 2 and the reservoirs (AMM 29-11-00/201).

 S 842-200

 (5)  
Release the parking brake.

 S 862-032

 (6)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:
　
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