B.
The nose gear steering collar is a two-piece rotating support unit, mounted on the nose gear shock strut outer cylinder.
C.
To remove the steering collar these steps are necessary:
-Remove upper torsion link
-Loosen electrical clamps and couplings
-
Remove Left collar pin
-
Remove right collar pin
-
Remove steering collar halves
-
Remove bearing halves.
D.
To install the steering collar these steps are necessary:
-Install bushings on shock strut
-Position steering collar on bushings
-Install steering collar pins
-Tighten electrical clamps and couplings.
TASK 32-51-06-004-001
2. Nose Gear Steering Collar Removal_________________________________
A. Special Tools and Equipment
(1) G12001 - Rigging pin - NS-4, 0.311 (+0.000/-0.002)-inch diameter,
2.50 inch length
NOTE: Rigging pin is part of G12001 tool kit.
____
B. References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 32-00-30/201, Landing Gear Door Locks
(4)
AMM 32-21-03/401, Nose Gear Torsion Links
(5)
AMM 32-51-00/501, Nose Wheel Steering System
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-51-06
ALL ú ú 01 Page 401 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(6)
AIPC 32-21-03 Fig. 1
(7)
AIPC 32-51-06 Fig. 2
C.
Access
(1)
Location Zone
715 Nose Landing Gear
D.
Prepare for Removal
S 494-003
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 (AMM 09-11-00/201).
S 494-026
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK 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 OR DAMAGE TO EQUIPMENT.
(2)
Do this task: "Installation of the Door Locks on the Nose Landing Gear" (AMM 32-00-30/201).
S 494-030
(3)
Do this task: "Installation of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).
S 494-031
(4)
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
S 864-004
(5)
Do this task: "Hydraulic System Depressurization"
(AMM 29-11-00/201).
S 494-005
(6)
Install a rigging pin through the cable compensator
(AMM 32-51-00/501).
E.
Remove Nose Gear Steering Collar (Fig. 401)
(1)
Loosen the cable (NWS2A and NWS2B) turnbuckles.
S 034-006
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-51-06
ALL ú ú 01 Page 402 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
AFT STEERING COLLAR
CLEARANCE
FORWARD 0.02 INCH MIN STEERING COLLAR
13. BUSHING SPLICE STRAP
BUSHING
0.04 INCH MIN
ACTUATOR
SUPPORT AFT STEERING STEERING
FITTING COLLAR CYLINDER
SEE A ROD END
A
SEE B
FWD
BOLT
WASHER12. BUSHING
(TYP) 1. RETAINER SPLICE
A-A
RING2. O-RINGSTRAP
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 起落架 LANDING GEAR 8(32)
