S 862-053

 (14)
 Set the parking brake.

 S 092-130

 (15)
 Do this task:  "Removal of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).

 TASK 32-42-11-002-056
 6.  Remove the Servo Control Valve from the Autobrake Pressure-Control__________________________________________________________________ Module (Fig. 201)______
 A.  References
 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (3)  
AMM 32-00-30/201, Landing Gear Door Locks

 (4)  
AIPC 32-42-11-01

 (5)  
SSM 32-41-01

 (6)  
WDM 32-41-31

 B.  
Access

 (1)  
Location Zones 117 Electrical & Electronics Compartment, LH (P180 DC Power Distribution Panel)

 136  Wing Landing Gear Well - Right (Aft Bulkhead, Wing Gear Wheel Well)
 C.  Prepare for the Removal
 S 492-131
 (1)  Make sure the ground locks are installed in all landing gear (AMM 09-11-00/201).
 S 492-132
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK 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 DAMGE TO EQUIPMENT.
 (2)  
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).

 (3)  
Make sure that wheel chocks are installed at all wheels.

 S 842-134

 (4)  
Remove the pressure from hydraulic system No. 4 and the reservoir (AMM 29-11-00/201).

 S 492-133
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 862-061
 (5)  
Release the parking brake.

 S 862-135

 (6)  
Open this circuit breaker and attach a DO-NOT-CLOSE tag:

 (a)  
P180 DC Power Distribution Panel
 1) 180J25, AUTOBRAKE

 D.
Remove the Servo Control Valve

 S 032-063
 (1)  
Disconnect the electrical connector, D439B, from the control valve.

 S 492-136

 (2)  
Put a cap on the electrical connector and the receptacle of the control valve.

 S 032-137

 (3)  
Hold the control valve and remove the screws (4 locations) that attach the control valve to the module.

 NOTE: Make sure to examine the lockwire before you remove it so you
____ can install it correctly when the new control valve is installed.
 S 022-138
 (4)  Remove the control valve.
 S 032-141
 CAUTION: BE CAREFUL TO KEEP ALL CONTAMINATION OUT OF THE AUTOBRAKE
_______ PRESSURE-CONTROL MODULE. CONTAMINATION CAN CAUSE DAMAGE TO THE MODULE.
 (5)  Remove the seal plate from the module.
 TASK 32-42-11-402-067
 7. Install the Servo Control Valve on the Autobrake Pressure-Control
_________________________________________________________________
 Module (Fig. 201)

______
 A. References
 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 29-11-00/201, Main Hydrualic Supply System

 (3)  
AMM 32-00-30/201, Landing Gear Door Locks

 (4)  
AMM 32-42-00/501, Brake Control System

 (5)  
AIPC 32-42-11-01

 (6)  
SSM 32-41-01

 (7)  
WDM 32-41-31

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-42-11
 ALL  ú ú 01 Page 211 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 B. Access
 (1)  Location Zones
 117 Electrical & Electronics Compartment, LH
 (P180 DC Power Distribution Panel)
　
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