S 862-021
(3)
Do this task: "Electrical Power Removal" (Ref 24-22-00/201).
S 092-022
(4)
Remove the protractor and the adapter.
TASK 27-11-06-002-023
4. Aileron Trim and Feel Mechanism Removal_______________________________________
A. Special Tools and Equipment
(1)
G12001-50 Rig Pin Kit
(2)
MIT65B04001-41 Control Wheel Straightedge
(3)
4MIT65B80307-1 Protractor (Recommended)
(4)
F52485-500 Protractor (Optional)
(5)
3MIT65B80307-1 Control Wheel Adapter
B.
References
(1)
24-22-00/201, Manual Control
(2)
29-11-00/201, Main Hydraulic Supply System
(3)
32-00-30/201, Landing Gear Door Locks
(4)
IPC 27-11-06 Fig. 2
(5)
IPC 27-11-08 Fig. 1
(6)
IPC 27-11-55 Fig. 1
(7)
SSM 27-11-01
(8)
WDM 27-11-11
C.
Access
(1)
Location Zone
135 Wing Landing Gear Well, LH
136 Wing Landing Gear Well, RH
D.
Prepare for Removal
(1)
Make sure the ground locks are installed on the landing gear.
S 492-024
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-11-06
ALL ú ú 04 Page 210 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 492-025 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Do this task: "Installation of the Door Locks on the Wing Landing Gear" (Ref 32-00-30/201).
S 862-026
(5)
Set the aileron trim system at the center to keep the aileron in the neutral position (Fig. 201):
(a)
Move the captain's and first officer's control wheels to the neutral position.
(b)
Operate the trim system switches until you can easily install rig pin A/S-2.
(3) Do this task: "Hydraulic System Pressurization" (Ref 29-11-00/201).
(4) S 862-027Do this task: "Supply Electrical Power" (Ref 24-22-00/201).
S 832-059
NOTE: For small increments of travel, you have to try more
____ than one time to get the trim system at the center.
S 492-029
(6)
With a clamp, attach the control wheel straightedge across the captain's and first officer's control wheels (Fig. 202).
S 862-030
(7)
Do this task: "Electrical Power Removal" (Ref 24-22-00/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-11-06
ALL ú ú 04 Page 211 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 862-031
(8)
Open this circuit breaker and attach a DO-NOT-CLOSE tag:
(a)
P7 Overhead Circuit Breaker Panel
1) 7D17 AILERON TRIM
S 482-032
(9)
Install a protractor and an adapter on the captain's control wheel.
S 822-054
(10)
Adjust the protractor to zero.
S 012-033
(11)
Get access to the aileron control drum through the opening of the body gear wheel well.
E.
Procedure
S 022-034
(1)
Remove the trim and feel mechanism (Fig. 201).
(a)
Remove the clip locks on the turnbuckles.
(b)
Disconnect the left body cables AA and AB at the turnbuckles.
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