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 ALL  ú ú 01 Page 407 ú Oct 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 034-012
 (9)  Separate the steering collar bushings (10) and (11) from the collar halves.
 NOTE:____These bushings are matched pairs. The forward and aft collar halves are also mated and should be maintained as a matched assembly.
 (a)  
Remove both of the upper and the lower steering collar bushing splice straps (12) and (13) (Section A-A, Fig. 401).

 (b)  
Separate the bearing halves at the joints shown in step A, Fig. 403.

 (c)  
Position the bearing halves as shown in step B, Fig. 403.

 (d)  
With the right bearing half in the position shown in step B, Fig. 403, remove the left half by turning it clockwise and forward as shown in step C, Fig. 403.

 (e)  
Remove the right bearing half.

 TASK 32-51-06-404-013
 3.  Nose Gear Steering Collar Installation______________________________________
 A. Special Tools and Equipment
 (1)  
ST2580-315 - Torque Wrench Adapter

 B.
Consumable Materials

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

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

 (3)  
A00955 Sealant - BMS 5-26

 C. Parts ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Retainer Ring | 32-51-06 | 02 | 60 | | | 2 | O-ring | | | 65 | | | 3 | Lube Insert | | | 70 | | | 4 | Retainer Nut | | | 95 | | | 5 | Collar Pin | | | 105 | | | 6 | O-ring | | | 100 | | | 7 | O-ring | | | 80 | | | 8 | Retainer Bolt | | | 85 | | | 9 | Bushing | | | 110 | | | 10 | Right Collar Bushing | | | 160 | | | 11 | Left Collar Bushing | | | 160 | | | 12 | Bushing Splice Strap | | | 150 | | | 13 | Bushing Splice Strap | | | 155 | | | 14 | Forward Steering Collar | | | 130 | | | 13 | Aft Steering Collar | | | 125 | 2......…........…...................................…..........…......…........1
 D. References
 (1)  AMM 32-00-30/201, Landing Gear Door Locks
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 408 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
AMM 32-21-03/401, Nose Gear Torsion Links

 (3)  
AMM 32-51-00/501, Nose Wheel Steering System

 E.
Access

 (1)  
Location Zone
 715 Nose Landing Gear

 F.
Procedure (Fig. 401)

 S 494-032
 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 494-034
 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 494-036

 (3)  
Do this task: "Installation of the Door Locks on the Wing Landing Gear" (AMM 32-00-30/201).

 S 494-037

 (4)  
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).

 S 864-038

 (5)  
Do this task: "Hydraulic System Depressurization"
 (AMM 29-11-00/201).

 S 434-014

 (6)
Prepare the steering collar pin lube inserts for installation.

 (a)  
　
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