747-400 AMM 飞机维护手册 起落架 LANDING GEAR 7(171)

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 B.  Hydraulic pressure for steering is available only when the landing gear control handle is in the DN position. Steering is controlled by two steering tillers in the flight compartment. One tiller is to the left of the captain and the other is to the right of the first officer. The rudder pedals can also be used to steer the nose gear during takeoff, landing and taxiing when small directional changes are required. Towing angle can range between approximately | 65 degrees without disconnecting the nose gear torsion links.
 C.  Nose gear steering is covered in AMM 32-51-00/001.
 D.  Body gear steering is covered in 32-53-00.
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 32-50-00
 ALL  ú ú 01 Page 1 ú Jun 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 STEERING - MAINTENANCE PRACTICES
________________________________
 1.  General_______
 A.  This procedure gives steps to install and remove the rig pins in the steering system.
 B.  Use this procedure when it is necessary to install any of the rig pins in the steering system.
 TASK 32-50-00-862-001
 2.  Installation of the Rig Pins in the Steering System (Fig. 201).______________________________________________________________
 A.  Special Tools and Equipment
___________________________
 (1)  G12001 Rigging Pins - NS-1, NS-2, NS-3, NS-4, NS-5, and NS-6
 NOTE: Rigging pins are part of G12001 kit.
____
 ~............................................................. | Rigging Pin No. | Length (inches) | Diameter (inches) | ............................................................... | NS-1 | 4.00 | 0.311 (+0.000/-0.002)| ............................................................... | NS-2 | 4.00 | 0.311 (+0.000/-0.002)| ............................................................... | NS-3 | 6.00 | 0.311 (+0.000/-0.002)| ............................................................... | NS-4 | 2.50 | 0.311 (+0.000/-0.002)| ............................................................... | NS-5 | 4.00 | 0.311 (+0.000/-0.002)| ............................................................... | NS-6 | 2.50 | 0.188 (+0.000/-0.002)| 2..................…...................…......................1
 B.  References
 (1)  
AMM 09-11-00/201, Towing

 (2)  
AMM 25-22-01/401, Main Passenger Cabin Ceiling Panels

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

 C.  
Access

 (1)  
Location Zones 117 Electrical and Electronics Compartment, LH (Rigging pin NS-4) 211 Passenger Cabin - Nose to First Door

 (Rigging pin NS-3, R03) 221 Control cabin, LH (Rigging pin NS-1) 222 Control Cabin, RH (Rigging pin NS-2) 715 Nose Landing Gear (Rigging pin NS-5, NS-6)
 D.  Prepare to Install the Rig Pins
 S 862-002
 (1)  Make sure you install the ground locks in the nose and the main landing gear (AMM 09-11-00/201).
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 32-50-00
 ALL  ú ú 02 Page 201 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

Steering System Rigging Pin Installation
Figure 201 (Sheet 1)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 32-50-00
 ALL  ú ú 01 Page 202 ú Feb 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
STEERING TILLER HANDLE (CAPTAIN'S)
NWS1A
RIG PIN NS-1 
(CAPTAIN'S) 
RIG PIN NS-2 
(FIRST OFFICER'S)  A 
FWD  STEERING ROD 
QUADRANT 
STEERING 
CRANK 
CLUTCH ARM 
INTERCONNECT 
LEVER 
RIGGING 
PIN NS-3 
B 
Steering System Rigging Pin Installation 
　
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