S 034-016
(2)
Remove the nut, the washers, and the bolt (2 locations) which hold the two actuator links to the torque shaft.
S 034-017
(3)
Remove the nuts, the washers, and the bolts which connect the actuator to the bellcrank (Ref 21-62-03/401).
S 034-018
(4)
Remove the nut, the washer, and the bolt which connects the
bellcrank to the torque shaft.
(5)
Remove the bellcrank from the torque shaft.
(6)
Remove the long spacer from the torque shaft.
S 034-044
(7)
Remove the fasteners which hold the bearing retainer assembly and the shim to the structure.
S 034-019
S 034-020
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747-400 MAINTENANCE MANUAL
S 034-021
(8) Remove the bearing retainer assembly and the shim from the torque shaft.
(a)
Remove the four bolts which hold the bearing retainer assembly to the ram air inlet mount.
(b)
Using a copper bar, gently push out the bearing retainer assembly from the inside.
NOTE: Pushing the bearing retainer assembly improperly or
____ with too much force may cause damage to the bearing retainer assembly or the ram air inlet mount.
S 034-022
(9)
Remove the short spacer from the torque shaft.
S 024-024
(10)
Hold the actuator links while you pull the torque shaft thru the hole in the structure.
NOTE: The actuator links can cause damage to the inlet door if you
____
let them fall on the door.
S 024-023
(11) Remove the torque shaft.
TASK 21-62-11-404-004
3. Ram Air Inlet Door Torque Shaft Installation (Fig. 401)
____________________________________________
A. References
(1)
21-51-00/501, Air Conditioning Pack System
(2)
21-62-02/401, Ram Air Inlet Door
(3)
21-62-03/401, Ram Air Inlet Door Actuator
(4)
24-22-00/201, Manual Control
(5)
IPC 21-62-14 Fig. 1
B. Access
(1)
Location Zone 123 Wing to Body Fairing, Forward Lower Half, LH 124 Wing to Body Fairing, Forward Lower Half, RH
(2)
Access Panels
191V-L WING/BODY FAIRING SEC 42 (Pack 1)
191Z-L WING/BODY FAIRING SEC 42 (Pack 2)
192V-R WING/BODY FAIRING SEC 42 (Pack 3)
C. Install the Torque Shaft
S 424-025
(1) Push the torque shaft through the hole in the structure until it engages with the actuator links.
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747-400 MAINTENANCE MANUAL
(2) S 424-026Continue to push the torque shaft until it engages fully with the spherical bearing in the bearing retainer assembly on the structure.
(3) S 434-027Put the short spacer on the torque shaft.
(4) S 434-028Put the shim and the bearing retainer assembly on the end of the torque shaft.
(5) S 434-029Install the fasteners which hold the shim and the bearing retainer assembly to the structure.
(6) S 434-030Install the long spacer on the torque shaft.
(7) S 434-031Put the bellcrank on the end of the torque shaft.
(8) S 434-032Install the bolt, washer (under the bolt), and nut which hold the bellcrank to the torque shaft.
(9) S 824-033Align the actuator links with the holes in the torque shaft.
S 214-034
(10)
Make sure the door slide blocks are in the tracks correctly. S 214-035
(11)
Make sure the aft door seal is on the rubbing strip correctly. S 214-036
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本文链接地址：747-400 AMM 飞机维护手册 空调 AIR CONDITIONING 2(183)
