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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (a)  
Push the button and pull out the quick-release pin from the apex bolt.

 (b)  
Loosen the apex bolt from the threaded bushing and pull out.

 S 284-007
 (5)  Manually move the upper link (in the restrained position) through its arc.
 NOTE: This is to make sure there is sufficient clearance between
____ the link and the P37 panel or the housing of the runway turnoff light.
 S 494-008
 (6)  
Use the holding tool to hold the link clear of the nose gear tires.

 S 014-009

 (7)  
Remove the left forward ceiling panel in the passenger compartment that is forward of the No. 1 door.

 E.
Remove the Arming Switch (Fig. 401)

 S 014-010
 (1)  
Remove the interconnect actuator of the No. 2 rudder pedal (AMM 32-51-07/401).

 S 024-011

 (2)  
Remove the arming switch.

 (a)  
Remove the two screws, the nuts, and the washers that attach the switch to the bracket and remove the switch.

 (b)  
Disconnect the electrical wires from the terminals on the switch.

 TASK 32-53-15-404-012
 3. Body Gear Steering Arming Switch Installation
_____________________________________________
 A. General
 (1)  The table that follows contains port/label and bit data. This information is necessary when you install and do a test of the arming switch for the steering system of the body landing gear.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 ~.......................................................................... | BIT TABLE | ............................................................................ | | Bit Condition | ............................................................................ | Switch | Port/Label | Bit | 0 | 1 | ............................................................................ | BODY GEAR | C/026/003/10 | 16 | OPEN | CLOSED | | STRNG ARM | | | | | 2................…...................…..........…............….............1
 B. Special Tools and Equipment
 (1)  
G12001 - Rigging pin, NS-3 - 0.311 (+0.000/-0.0002)-inch
 diameter, 6.00 inches long

 C.
Consumable Materials

 (1)  
D00633 Grease - BMS 3-33 (preferred)

 (2)  
D00013 Grease - MIL-G-23827 (optional)

 D.
References

 (1)  
AMM 24-22-00/201, Manual Control

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

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

 (4)  
AMM 32-51-07/401, Nose Gear Rudder Pedal Steering Interconnect Actuator

 (5)  
AMM 32-53-11/201, Body Gear Steering Actuators and Yoke Assembly

 (6)  
AIPC 32-51-62 Fig. 1

 (7)  
SSM 32-53-01

 (8)  
WDM 32-53-11

 E.
Access

 (1)  
Location Zone
 211 Forward Passenger Cabin, LH

 F.
Install the Arming Switch (Fig. 401)

 S 424-013
 (1)  
Install the switch in the bracket until the channel touches the inboard end of slot and secure with mounting screws, washers, and nuts.

 (a)  
Attach the switch with the mounting screws, the washers, and the nuts.

 S 434-014
 (2)
Connect the electrical wiring to the switch at the terminals.

 S 864-017

 (3)  
Supply electrical power (AMM 24-22-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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