32-32-00
 ALL  ú ú 01 Page 103 ú Oct 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400 FAULT ISOLATION/MAINT MANUAL
DOOR OPERATED MECHANISM
SEQUENCE VALVE COVER
FWD
DOOR OPERATED SEQUENCE VALVE MECHANISM
ACTUATOR ROD
DOOR OPERATED SEQUENCE VALVE AND MECHANISM
E FROM SHT 2
UPLOCK OPERATED SEQUENCE VALVE
UPLOCK OPERATED SEQUENCE VALVE
UPLOCK OPERATED  MECHANISM
SEQUENCE VALVE
AND MECHANISM
SEE F
UPLOCK ACTUATOR
UPLOCK OPERATED SEQUENCE VALVE AND MECHANISM F
Wing Gear and Doors Extension and Retraction - Component Location Figure 102 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-32-00
 ALL  ú ú 01 Page 104 ú Oct 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
PRESSURE-OPERATED RESTRICTOR CHECK VALVE
UP
SUPPORT BRACKETPRESSURE-OPERATED(REF)
RESTRICTOR  DN
CHECK VALVE UPC
UPSEE G
PRESSURE-OPERATED RESTRICTOR CHECK VALVE
G
DOOR SAFETY VALVE
DIFFERENTIAL ASSEMBLY (REF)
DOOR SAFETY
VALVE

SEE H
DOOR ACTUATOR RELEASE LINKAGE (REF)
DOOR SAFETY VALVE H Wing Gear and Door Extension and Retraction - Component Location Figure 102 (Sheet 4)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-32-00
 ALL  ú ú 02 Page 105 ú Jun 10/89
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 WING GEAR AND DOOR EXTENSION AND RETRACTION - ADJUSTMENT/TEST
_____________________________________________________________
 1.  General
_______
 A.  In this procedure, you can test the Wing Gear and Door Extension and Retraction only or do a Main Gear and Door Extension and Retraction -Adjustment Test. If you wish to do the Main Gear and Door Extension and Retraction test, proceed to "Main Gear and Main Gear Doors Extension and Retraction - System Test."
 B.  This procedure contains a system test of the mechanical and electrical functions for these systems:
 (1)  
The extension system for the wing landing gear

 (2)  
The retraction system for the wing landing gear.

 C.  
This procedure is not a system test for the adjustment of the control system for the landing gear. If you adjusted the control system, do the system test for the control system of the landing gear (AMM 32-31-00/501).

 TASK 32-32-00-355-046
 2.  System Test - Wing Landing Gear and Door Extension and Retraction (Figure
_________________________________________________________________
 501)

 NOTE: It is satisfactory if the "CONFIG GEAR" message appears while you are
____
 doing the test.

 A.  General
 (1)  
Monitor the temperature of the hydraulic fluid during the test. The fluid temperature must not become more than 100°C (212°F). It is possible that these two items that follow will occur if the fluid temperature becomes too hot:

 (a)  
The SYS FAULT light on the overhead panel will come on

 (b)  
The HYD OVHT indication will come into view on the EICAS.

 (2)  
If these indications come into view, stop the test until the fluid is cool before you continue.

 B.  
Special Tools and Equipment

 (1)  
G12001 Kit (Rigging Pins) ~................................................................. | Rigging Pin No. | Length (inch) | Diameter (inch) | ................................................................... | WD-1 (LH) | 3.25 | 0.185 to 0.188 | ................................................................... | WD-2 (RH) | 3.25 | 0.185 to 0.188 | 2....................…........................…...................1

 C.  
References

 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 20-41-01/201, Static Grounding

 (3)  
AMM 24-22-00/201, Manual Control