1) Pull the quick-release pin (8) out of the tripod apex bolt (7).
(c)
Remove the tripod apex pin (7) from the threaded bushing (9).
S 024-007
(2)
Do these steps to remove the upper torsion link (5):
(a)
Remove the nut (2) and washer.
(b)
Remove the retainer (1).
(c)
Hold the upper torsion link (5) and pull out the pin (4).
(d)
Remove the holding tool from the upper torsion link (5).
S 024-008
(3)
Do these steps to remove the lower torsion link (10):
(a)
Remove the nut (14) and washer.
(b)
Remove the retainer (13).
(c)
Hold the lower torsion link (10) and pull out the pin (11).
(d)
Remove the lower torsion link (10).
TASK 32-21-03-404-009
3. Nose Gear Torsion Links Installation (Fig. 401)
_____________________________________
A. Special Tools and Equipment
(1) 8ME65B01202-1, Torsion Link Holding Tool
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A
747-400
MAINTENANCE MANUAL
B. Consumable Materials
(1)
D00633 Grease - BMS 3-33 (preferred)
(2)
D00013 Grease - MIL-G-23827 (optional)
(3)
B00722 Solvent - PD-680 or equivalent cleaning solvent
(4)
C00000 Material - Corrosion-Inhibiting (nondrying Resin Mix), BMS 3-27 (Mastinox 6856 K; International Celomer, 75 Boulevard Winston Churchill, 76 Le Havre, France)
C.
References
(1)
AMM 07-11-02/201, Jacking Airplane Nose
(2)
AMM 09-11-00/201, Towing
(3)
AMM 12-21-01/301, Landing Gear
(4)
AMM 32-00-30/201, Landing Gear Door Locks
(5)
AMM 32-21-03/601, Nose Gear Torsion Links
(6)
AIPC 32-21-03 Fig. 1
D.
Access
(1)
Location Zone
715 Nose Landing Gear
E.
Prepare for the Installation
S 224-010
(1)
Make sure the torsion links, attach points, and apex pin wear limits are in tolerance (AMM 32-21-03/601).
S 114-011
(2)
Clean all bolts, nuts, washers, retainers, and mating surfaces with solvent.
F.
Procedure
S 424-012
(1)
Do these steps to install the lower torsion link (10):
(a)
Lubricate the link pin (11) with grease.
(b)
Put the lower torsion link (10) on the attachment lug (12) of the inner cylinder and insert the pin (11).
WARNING: DO NOT GET CORROSION-INHIBITING MATERIAL IN YOUR EYES OR
_______ ON YOUR SKIN. CORROSION-INHIBITING MATERIAL IS POISONOUS AND FLAMMABLE. IF THE MATERIAL GETS ON YOUR SKIN, CLEAN YOUR SKIN WITH WATER. IF THE MATERIAL GETS IN YOUR EYES, FLUSH YOUR EYES WITH WATER AND GET MEDICAL AID.
(c) Apply corrosion-inhibiting material on the shank and threads of the retainer (13).
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A 747-400 MAINTENANCE MANUAL
(d) (e) Install the retainer (13).Install the washer and nut (14) on the retainer (13). 1) Tighten the nut (14) with 840 - 960 pound-inches torque.
(2) S 424-013Do these steps to install the upper torsion link (5): (a) Lubricate the pin (4).
CAUTION:_______ DO NOT LET THE TORSION LINK FALL ON THE SQUAT SENSOR BRACKET. THE SQUAT SENSOR BRACKET COULD BEND OR BREAK.
(b) (c) (d) (e) (f) (g) Install the holding tool on the upper torsion link (5).Put the upper torsion link (5) on the steering collar (3).Install the pin (4) from the left side.Apply corrosion-inhibiting material to the shank and threads of the retainer (1).Install the retainer (1) in the end of the pin (4).Install the washer and nut (2) on the retainer (1). 1) Tighten the nut (2) to 840 - 960 pound-inches.
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本文链接地址：747-400 AMM 飞机维护手册 起落架 LANDING GEAR 3(130)
