32-51-11
ALL ú ú 01 Page 407 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
STEERING ACTUATOR SUPPORT PLATE TRUNNION BEARING - REMOVAL/INSTALLATION
_______________________________________________________________________
1. General_______
A. This procedure removes and installs the trunnion bearings in the steering actuator support plates.
TASK 32-51-12-004-001
2. Removal of the Upper/Lower Trunnion Bearing in the Steering Actuator Support____________________________________________________________________________ Plate______
A. Special Tools and Equipment
(1)
3MIT65B01519 - Puller
B.
References
(1)
AMM 32-51-04/401, Steering Metering Valve
(2)
IPC 32-51-00 Fig. 1, IPC 32-51-04 Fig. 1
C.
Access
(1)
Location Zone
715 Nose Landing Gear
D.
Remove the Trunnion Bearings (Fig. 401)
NOTE: You must replace the bearing when the rubber seal or the met ring
____
is out of the trunnion bearing.
S 014-002
(1)
Remove the steering metering valve if you replace the upper trunnion bearing (AMM 32-51-04/401).
(2)
Remove the applicable trunnion locknut.
(3)
Use a puller to remove a defective bearing from the support plate.
S 014-003
S 024-004
TASK 32-51-12-404-005
3. Installation of the Upper/Lower Trunnion Bearing in the Steering Actuator_________________________________________________________________________ Support Plate______________
A. Consumable Materials
(1) C00174 Corrosion Preventive Compound - MIL-C-16173, Grade 3
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32-51-12
ALL ú ú 01 Page 401 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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
0.04 INCH MIN
SEE A ROD END BEARING COLLAR AFT STEERING B STEERING CYLINDER ROD END
METERING VALVE NUT
SHOCK STRUT UPPER SUPPORT PLATE STEERING CYLINDER1 TRUNNION LOCKNUT UPPER TRUNNION BEARING
2
LOWER TRUNNION BEARING
1 SEE B LOWER SUPPORT PLATE
A
TRUNNION LOCKNUT
1 WHEN BEARINGS ARE PROPERLY INSTALLED THEY WILL PROTRUDE BEYOND SUPPORT PLATE SURFACE GIVING A FALSE INDICATION OF BEARING MIGRATION.
2 MAKE PHYSICAL CHECK FROM THIS AREA TO DETERMINE IF BEARING HAS MIGRATED AWAY FROM SUPPORT PLATE BOSS OR STEP. Nose Gear Steering Cylinder Trunnion Bearings Figure 401
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32-51-12
ALL ú ú 01 Page 402 ú Oct 10/88
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
B. References
(1)
AMM 12-21-01/301, Landing Gear
(2)
AMM 32-51-04/401, Steering Metering Valve
(3)
IPC 32-51-00 Fig. 1, IPC 32-51-04 Fig. 1
C.
Access
(1)
Location Zone
715 Nose Landing Gear
D.
Install the Trunnion Bearings (Fig. 401)
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本文鏈接地址：747-400 AMM 飛機維護手冊 起落架 LANDING GEAR 8(49)
