S 494-026

 (3)  
Do this task: "Installation of the Door Locks on the Body Landing Gear" (Ref 32-00-30/201).

 S 434-011

 (4)  
Install the new O-ring and the backup rings on the relief valve.

 S 424-012

 (5)  
Set the relief valve on the actuator.

 (a)  
Align the screw holes in the relief valve with the holes in the actuator.

 S 434-013
 (6)  
Install the relief valve to the actuator with bolts and lockwire.

 S 344-014

 (7)  
Clean and apply a bead of the sealant around the joint between the valve and the actuator body.

 S 864-015

 (8)  
Pressurize the hydraulic system No. 4 (Ref 29-11-00/201).

 S 794-016

 (9)  
Do a check on the hydraulic connections for leaks.

 S 874-017

 (10)
 Bleed the actuator by opening the bleed valve.

 (a)  
Let the fluid to flow from the valve outlet approximately 1 pint or more if bubbles remains in the system.

 (b)  
Tighten the bleed valve and the lockwire.

 S 614-018
 (11)
 Do a check on the hydraulic reservoir level.

 (a)  
If it is necessary, fill the hydraulic reservoir level (Ref 12-12-01/301).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-11-29
 ALL  ú ú 01 Page 404 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 094-024
 WARNING:_______ YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
 DOOR LOCKS FROM THE LANDING GEAR DOORS.  THE DOORS CAN CLOSE
 QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY.  THIS

 CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (12)
 Do this task:  "Removal of the Door Locks from the Wing Landing Gear" (Ref 32-00-30/201).

 S 094-027

 (13)
 Do this task:  "Removal of the Door Locks from the Body Landing Gear" (Ref 32-00-30/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-11-29
 ALL  ú ú 01 Page 405 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 WING LANDING GEAR SHOCK STRUT CHARGING VALVE SEAL - REMOVAL/INSTALLATION
________________________________________________________________________
 1.  General_______
 A.  This procedure contains two tasks:
 (1)  
The removal of the charging valve and the seal on the shock strut of the wheel landing gear.

 (2)  
The installation of the charging valve and the seal on the shock strut of the wing landing gear.

 B.  
The charging valve is installed on the inboard side of the shock strut below the trunnion. Access to the charging valve is through the upper bulkhead on top of the shock strut.

 TASK 32-11-31-004-001
 2.  The Charging Valve and the Seal Removal on the Shock Strut of the Wing______________________________________________________________________ Landing Gear (Fig. 401)____________
 A.  Special Tools and Equipment
 (1)  
MIT65B18211 - Upper Seal Replacement Tool

 (2)  
19MIT65B01211-1 - Torque Adapter

 B.  
References

 (1)  
07-11-01/201, Jacking Airplane

 (2)  
09-11-00/201, Towing

 (3)  
29-11-00/201, Main Hydraulic Supply System

 (4)  
32-00-30/201, Landing Gear Door Locks

 C.  
Access

 (1)  
Location Zone
 735 Wing Landing Gear, LH
 745 Wing Landing Gear, RH

 D.  
Prepare for the Removal

 (1)
Install the ground locks in all landing gear (Ref 09-11-00/201).

 S 864-032
 S 494-033
　
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