(2)  
AMM 32-00-30/201, Landing Gear Door Locks

 (3)  
SWPM 20-20-00, Electrical Bond and Ground

 (4)  
SSM 28-31-01

 (5)  
WDM 28-31-12

 D.
Access

 (1)  
Location Zones
 135 Wing Landing Gear Well, Left
 136 Wing Landing Gear Well, Right

 E.
Procedure

 S 114-095
 (1)  
Prepare these surfaces for an electrical surface bond (SWPM 20-20-00):

 (a)  
Faying surface of the valve actuator and the valve body mounting bolts.

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747-400
MAINTENANCE MANUAL

 (b)  Faying surface of the bonding jumper and bonding jumper tab.
 (2)  S 864-011Make sure the manual override lever on the actuator is in the closed position.
 (3)  S 424-012Engage the shaft with splines on the actuator with the valve body to put the actuator (1) in its position.
 (4)  S 434-013Install the screws (3) and washers (4) (four locations) to attach the actuator (1) to the rear spar.
 (5)  S 424-096Tighten the cap screws to a torque of 20 - 25 pound-inches (2.3 - 2.8 newton-meters).
 (6)  S 434-071Install lockwire on the screws (3).
 (7)  S 434-014Install the screw (5), washers (6), and nut (8) to attach the bonding jumper (7) to the actuator (1) (SWPM 20-20-00).
 (8)  S 764-097Measure the electrical resistance between the actuator (1) and the spar (SWPM 20-20-00).
 NOTE:____ The resistance must not be more than 0.008 ohm.
 (9)  S 434-015Connect the electrical connector (2) to the actuator (1).
 NOTE:____ Refer to this table for the equipment numbers.
 ~................................................................. | | Equipment Number | | Location ............................ | | Valve | Connector | ................................................................... | Center Wing Tank - Left | V53 | DV53 | ................................................................... | Center Wing Tank - Right | V52 | DV52 | 2......................................…...........…..............1

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 ALL  ú ú 01 Page 405 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
 F. Put the Airplane Back to the Usual Condition.
 S 864-092
 (1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
On the main power distribution panel, P6: 1) 6E17, CTR R & MAIN 2 JTSN VLV 2) 6F17, CTR R & MAIN 3 JTSN VLV

 S 094-093
 WARNING: USE THE PROCEDURE IN AMM 32-00-30/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)
Remove the wing and body gear door locks (AMM 32-00-30/201).

 S 714-072

 (3)  
Do this procedure: Ground Test - Fuel Jettison Transfer Valve (AMM 28-31-00/501).

 TASK 28-31-04-004-023
 4. Fuel Jettison Transfer Valve Actuator in the Inboard Main Tank Removal
______________________________________________________________________ (Fig. 402)
 A. References
 (1)  
AMM 32-00-30/201, Landing Gear Door Locks

 (2)  
AIPC 28-31-04, Fig. 1

 (3)  
SSM 28-31-01

 (4)  
WDM 28-31-12

 B.
Access

 (1)  
Location Zones 571 Rear Spar to Landing Gear Support Beam, Left 671 Rear Spar to Landing Gear Support Beam, Right

 C.
Procedure

 S 864-024
 (1) Make sure the ground lockpins for the landing gear are installed.
 S 494-025
 WARNING: USE THE PROCEDURE IN AMM 32-00-30/201 TO INSTALL THE DOOR
　
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