32-31-03
 ALL  ú ú 01 Page 404 ú Jun 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 TASK 32-31-03-004-005
 3. Nose Landing Gear and Body Landing Gear Selector Valve Removal
______________________________________________________________
 A. Special Tools and Equipment
 (1)  
G12001 Kit (Rigging Pins) ~................................................................ | Rigging Pin No. | Length (inch) | Diameter (inch)| .................................................................. | LG-1 | 4.0 | 0.309 to 0.311| .................................................................. | LG-2 | 4.0 | 0.309 to 0.311| 2.....................…......................…...................1

 B.
References

 (1)  
09-11-00/201, Towing

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

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

 (4)  
IPC 32-31-64 Fig. 1

 C.
Access

 (1)  
Location Zone
 137 Body Landing Gear Wheel Well, LH
 138 Body Landing Gear Wheel Well, RH

 D.
Prepare for the Removal

 S 494-053
 WARNING: YOU MUST CAREFULLY INSTALL THE GROUND LOCKS IN ALL LANDING
_______ GEAR. AN ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1) Install the ground locks in all landing gear (Ref 09-11-00/201).
 S 494-054
 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 AND DAMAGE TO EQUIPMENT.
 (2)  Do this task: "Installation of the Door Locks on the Doors for the Wing Landing Gear" (Ref 32-00-30/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-31-03
 ALL  ú ú 02 Page 405 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 494-055
 (3)  
Do this task: "Installation of the Door Locks on the Doors for the Body Landing Gear" (Ref 32-00-30/201).

 E.
Remove the Selector Valve.

 S 024-008
 (1)  
Remove the selector valve (1) (Fig. 402):

 (a)  
Put the control handle for the landing gear in the OFF position.

 (b)  
Install rigging pin LG-2 in the selector valve quadrant above the valve (1).

 (c)  
Disconnect the selector valve crank (14) from the selector valve (1).

 (d)  
Disconnect the hydraulic hoses from the valve (1).

 (e)  
Install a plug on the hydraulic hoses.

 (f)  
Remove the bolts (12) that attach the valve (1) to the structure.

 (g)  
Remove the selector valve (1) from the airplane.

 (h)  
Remove the hydraulic fittings (5, 9 and 11) from the valve.

 (i)  
Install a plug on the ports.

 TASK 32-31-03-404-009
 4.  Wing Landing Gear Selector Valve Installation_____________________________________________
 A. Special Tools and Equipment
 (1)  
G12001 Kit (Rigging Pins) ~................................................................ | Rigging Pin No. | Length (inch) | Diameter (inch)| .................................................................. | LG-1 | 4.0 | 0.309 to 0.311| .................................................................. | LG-2 | 4.0 | 0.309 to 0.311| 2.....................…......................…...................1

 B.
Consumable Materials

 (1)  
D00196 Fluid - Hydraulic - BMS 3-11, Type IV, Class 1

 (2)  
D00288 Lubricant - MCS 352 (Skydrol Assembly Lube)

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-31-03
 ALL  ú ú 02 Page 406 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
　
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