C.
Access
(1)
Location Zone
715 Nose Landing Gear
D.
Prepare for the Removal
S 864-024
WARNING: MAKE SURE THE GROUND LOCKS ARE INSTALLED IN ALL THE LANDING
_______ GEAR. WITHOUT THE GROUND LOCKS, THE LANDING GEAR COULD RETRACT AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Make sure the ground locks are installed in the nose and main landing gear (AMM 09-11-00/201).
S 494-025
WARNING:_______OBEY THE INSTALLATION PROCEDURE FOR THE DOOR LOCKS. THE DOORS OPEN AND CLOSE QUICKLY. THE MOVEMENT OF THE DOORS CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(2) Open the doors for the nose landing gear and install the door locks (AMM 32-00-30/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-21-03
ALL ú ú 01 Page 401 ú Oct 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
SEE A
SEE B
SEE C
FWD
SEE D
A
Torsion Links Installation for the Nose Landing Gear Figure 401 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-21-03
ALL ú ú 01 Page 402 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
1. RETAINER
5. UPPER
TORSION
LINK
3.
STEERING COLLAR
4.
PIN FOR THE UPPER TORSION LINK
2. NUT
B
6.
HANDLE
7.
TRIPOD
APEX PIN
5. UPPER TORSION LINK
8. QUICK-RELEASE PIN
10. LOWER TORSION LINK
9. THREADED BUSHING
14. NUT
FWD
11. PIN FOR THE LOWER TORSION
C LINK
12.
INNER CYLINDER ATTACH LUG
13.
RETAINER FWD
D
Torsion Links Installation for the Nose Landing Gear
Figure 401 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-21-03
ALL ú ú 01 Page 403 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
SEE A
B
B
A
A
FWD
A
5.5
UPPER
TORSION CRIMP FERRULE
CABLE LINK (2 LOCATIONS)
BUTTON
QUICK-
RELEASE 14.0
PIN
APEX
BOLT 0.12
2.12
LOWER THREADED
TORSION BUSHING
LINK
HANDLE NOTE:____ ALL DIMENSIONS ARE IN INCHES.
A-A B-B
Torsion Links Installation
Figure 402
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
32-21-03
ALL ú ú 01 Page 404 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 014-005
(3) Remove the left wheel and tire assembly (AMM 32-45-02/401).
NOTE: This makes it possible to remove the lower link pin.
____
E. Procedure
S 034-006
(1) Do these steps to remove the tripod apex pin (7):
CAUTION: DO NOT LET THE TORSION LINK FALL ON THE SQUAT SENSOR
_______ BRACKET. THE SQUAT SENSOR BRACKET COULD BEND OR BREAK.
(a)
Install the holding tool to keep the torsion link in position.
(b)
Push and hold the button on the quick-release pin (8).
