S 034-038
(11)
Disconnect the cables from the cable quadrant in the uplock assembly.
S 014-012
(12)
Remove the electrical actuator (AMM 32-35-01/401).
S 494-013
(13)
Hold the uplock assembly with the hoist.
S 024-014
(14)
Remove the four bolts that attach the uplock assembly to the structure.
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747-400 MAINTENANCE MANUAL
TASK 32-33-08-404-015
3. Body Landing Gear Uplock Mechanism Installation_______________________________________________
A. Special Tools and Equipment
(1)
G12001 (Rigging Pins) ~....................................................... | Rigging Pin No. | Length (inch) | Diameter (inch) | ......................................................... | AE/GD-9 (LH) | 7 | 0.309 to 0.311 | ......................................................... | AE/GD-10 (RH) | 7 | 0.309 to 0.311 | 2..................….................…..................1
(2)
30HME65B00161-950 Hoist, Landing Gear Uplock Assembly (Strap)
B.
References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 29-11-00/201, Main Hydraulic Supply System
(3)
AMM 32-00-30/201, Landing Gear Door Locks
(4)
AMM 32-33-07/401, Body Gear Uplock-Operated Sequence Valve Mechanism
(5)
AMM 32-33-14/401, Body Gear Uplock Actuator
(6)
AMM 32-35-00/501, Nose and Body Gear Alternate Extension System
(7)
AMM 32-35-01/401, Alternate Extension System Electric Actuator
(8)
AMM 32-61-11/201, Body Gear Uplock Sensors
(9)
AIPC 32-33-06 Fig. 1, AIPC 32-33-08, AIPC 32-33-14, Fig. 2
C.
Access
(1)
Location Zone
755 Body Landing Gear, LH
765 Body Landing Gear, RH
D.
Install the Uplock Mechanism.
S 424-017
(1)
Install the uplock mechanism (Fig. 401):
(a)
Put the uplock mechanism it its position on the support structure.
NOTE:____Use the hoist to install the mechanism. You will install the ears of the frame in the clevis ends of the uplock supports.
(b)
Apply a thin layer of grease on the bolt.
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747-400
MAINTENANCE MANUAL
(c) Install the four bolts with the countersunk washer adjacent to
the bolt heads.
NOTE:____ Install the bolts with the heads on the external side of
the support frame.
(d) Install the nuts and the plain washers on the bolts.
(e) Install the four bolts that attach the sequence valve bracket
to the structure.
(f) Install the two bolts that attach the forward end of the
sequence valve bracket to the uplock assembly.
S 434-018
(2)
Connect the forward end of the rod to the uplock assembly (AMM 32-33-07/401).
S 414-019
(3)
Move the sensor conduit to the correct position.
S 434-040
(4)
Install the uplock sensor (AMM 32-61-11/201).
S 434-039
(5)
Tighten the conduit nuts and the clamps on the conduit.
S 434-020
(6)
Connect each end of the uplock actuator to the uplock mechanism (AMM 32-33-14/401).
S 434-021
(7)
Connect the cables LGDR1A and LGDR1B (LGDR2A and LGDR2B right side) to the cable quadrant in the uplock assembly.
S 834-022 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 4(142)
