S 494-095
(3)
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).
S 864-147
(4)
Release the pressure from hydraulic system No. 1 (AMM 29-11-00/201).
S 864-096
WARNING: DO NOT LOOSEN OR REMOVE THE VALVE BODY WHEN PRESSURE IS
_______ SUPPLIED TO IT. THE VALVE CAN BECOMES AIRBORNE, INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
CAUTION:_______CLEAR AREA BELOW WING BEFORE DEFLATING STRUT. WING CAN LOWER SEVERAL FEET.
(5) Remove the charging valve cap and loosen the outer nut less than two turns to release the pressure from the shock strut.
NOTE: The charging valve is on top of the shock strut.
____
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747-400 MAINTENANCE MANUAL
S 034-097
(6)
Replace the charging valve cap when no more nitrogen flows out of the valve.
S 584-098
(7)
Lift the airplane on jacks until all four wheels are off the ground (AMM 07-11-01/201).
F.
Removal
S 034-099
(1)
Remove all four tire and wheel assemblies (AMM 32-45-01/401).
S 034-100
(2)
Disconnect and remove all four brake assmeblies (AMM 32-41-15/401).
S 034-103
(3)
Remove the antiskid transducer and transducer drive unit from each axle (AMM 32-42-04/401).
S 034-107
(4)
Disconnect the antiskid wire bundle from the connectors in the axles then pull the wire bundle through the pull boxes.
S 034-108
(5)
Remove the position sensors for the wheel truck (AMM 32-61-12/201).
S 034-113
(6)
Disconnect the hydraulic lines from the support brackets on the lower torsion link (Fig. 402).
S 034-114
(7)
Disconnect the hydraulic line from the truck positioning actuator and seal the connection with a cap (Fig. 401).
(8)
Remove the hydraulic lines from the support brackets (Fig. 402).
S 034-116
(9)
Loosen the conduit brackets on the truck and the nuts on the pull boxes.
S 034-115
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747-400
MAINTENANCE MANUAL
SHOCK STRUT
ACTUATOR POSITIONING TRUCK LINK TORSION LOWER
SEE A TRUCK PIVOT SEE B TRUCK WHEEL
FWD
Body Gear Wheel Truck Installation
Figure 401 (Sheet 1)
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747-400
MAINTENANCE MANUAL
TRUCK POSITIONING ACTUATOR
NYLON WASHER
WHEEL TRUCK
CLAMP-UP BUSHING A PIVOT BOLT NUT INNER CYLINDER FORK LUBE RETAINER O-RING LOCKBOLT PIVOT
PIVOT BOLT 1 WHEEL TRUCK
FWD
1 OF THE WHEEL TRUCK ON THE INBOARD SIDE BOLT HEAD MUST BE B INBD
Body Gear Wheel Truck Installation
Figure 401 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 起落架 LANDING GEAR 3(25)
