(23)
 Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 094-042
 WARNING: USE THE PROCEDURE IN AMM 32-00-30/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT IF THE LOCKS ARE NOT CORRECTLY REMOVED.
 (24) Remove the door locks from the main landing gear (AMM 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-53-04
 ALL  ú ú 01 Page 413 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 BODY GEAR STEERING MODULE PRESSURE SWITCH - REMOVAL/INSTALLATION
________________________________________________________________
 1.  General_______
 A.  This procedure removes and installs the pressure switch of the steering module of the body landing gear.
 TASK 32-53-05-004-001
 2.  Body Gear Steering Module Pressure Switch Removal__________________________________________________
 A.  Special Tools and Equipment
 (1)  
78169-T2 - Crowfoot Wrench ; Abex Corp., Aerospace Div., Oxnard, California, U.S.A.

 B.  
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)  
IPC 32-53-05 Fig. 1

 (5)  
SSM 32-53-01

 (6)  
WDM 32-53-12

 C.  
Access

 (1)  
Location Zone
 755 Body Landing Gear, LH
 765 Body Landing Gear, RH

 D.  
Remove Pressure Switch (Fig. 401)

 S 494-002
 (1)  Make sure that you install the ground locks of the landing gear (AMM 09-11-00/201).
 S 494-003
 WARNING: REFER TO AMM 32-00-30/201 FOR THE LOCK INSTALLATION PROCEDURE.
_______ THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  Install the door locks of the wing and the body landing gear (AMM 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-53-05
 ALL  ú ú 01 Page 401 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400 MAINTENANCE MANUAL
SEE A
PRESSURE SWITCH
CONTROL MODULE FWD
ASSEMBLY
A

Body Gear Control Module Pressure Switch Installation
Figure 401

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-53-05
 ALL  ú ú 01 Page 402 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 864-004
 (3)  
Open the circuit breakers as follows for the steering system of the body landing gear:

 (a)  
P7 Overhead Circuit Breaker Panel
 1) 7G23 BODY GR STRG ARM AC
 2) 7G24 BODY GR STRG ARM DC

 S 844-005
 (4)  
Release the pressure from hydraulic system No. 1 (AMM 29-11-00/201).

 S 034-006

 (5)  
Disconnect the electrical connector from the applicable control module:

 (a)  
Left control module 1) Pressure switch electrical connector DX358B

 (b)  
Right control module 1) Pressure switch electrical connector DX343B.

 S 034-007
 (6)  
Seal the plug and the receptacle with caps.

 S 024-008

 (7)  
Remove the pressure switch with the crowfoot wrench, discard the O-ring and seal the port with a cap.

 TASK 32-53-05-404-009
 3.  Body Gear Steering Module Pressure Switch Installation_______________________________________________________
 A. General
　
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