(3)
AIPC 32-21-03 Fig. 1
D.
Access
(1)
Location Zone
715 Nose Landing Gear
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A
747-400
MAINTENANCE MANUAL
UPPER TORSION
LINK
SEE A
B
B
A
A
LOWER TORSION
LINK
FWD
A
5.5
UPPER
TORSION CRIMP FERRULE
CABLE LINK (2 PLACES)
BUTTON
QUICK-
RELEASE 14.0
PIN
APEX
BOLT 0.12
2.12
LOWER THREADED
TORSION BUSHING
LINK
HANDLE ____NOTE: DIMENSIONS ARE IN INCHES.
A-A
B-B
Torsion Links Connection
Figure 201
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747-400 MAINTENANCE MANUAL
E. Connect the Nose Gear Torsion Links (Fig. 201)
S 842-011
(1)
Make sure there is no pressure to hydraulic system No. 1
(AMM 29-11-00/201).
S 422-008
(2)
Install the apex bolt of the torsion link of the nose landing gear (Fig. 201).
(a)
Remove the holding tool from the torsion link.
(b)
Put the upper torsion link end in the fork of the lower torsion link.
NOTE: If it is necessary, manually move the upper torsion link
____ to align with the lower torsion link. Push the end of the upper torsion link in the necessary direction to align correctly.
(c)
Lubricate the apex bolt shank and threads with grease.
(d)
Insert apex bolt and screw into threaded bushing.
1) Tighten the bolt with your hand and install the quick-release pin.
S 092-009
WARNING:_______REFER TO AMM 32-00-30/201 FOR THE LOCK REMOVAL PROCEDURE. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3) Remove the door locks of the nose landing gear (AMM 32-00-30/201).
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747-400 MAINTENANCE MANUAL
NOSE GEAR TORSION LINKS - REMOVAL/INSTALLATION
______________________________________________
1. General_______
A. This procedure has two tasks:
(1)
The removal of the torsion links for the nose landing gear.
(2)
The installation of the torsion links for the nose landing gear.
B.
The torsion links are connected together by the tripod apex pin at their forward ends. The aft end of the upper link is connected to the forward steering collar. The aft end of the lower link is connected to the forward side of the inner cylinder for the shock strut.
TASK 32-21-03-004-001
2. Torsion Links Removal (Fig. 401)_____________________
A. Special Tools and Equipment
(1)
8ME65B01202-1, Torsion Link Holding Tool (referred to as the holding tool in this procedure)
B.
References
(1)
AMM 07-11-02/201, Jacking Airplane Nose
(2)
AMM 09-11-00/201, Towing
(3)
AMM 32-00-30/201, Landing Gear Door Locks
(4)
AMM 32-45-02/401, Nose Gear Wheel and Tire
(5)
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