22-13-06
ALL ú ú 01 Page 401 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
LAS SEE A
CONTROL
ROD
6. BACK-UP RING
1. SERVO ASSEMBLY 7. O-RING
6. BACK-UP RING
3. BACK-UP RING
4. O-RING
3. BACK-UP RING
A
LAS Filter Installation Figure 401
5. FILTER ELEMENT
2. FILTER COVER RETAINER
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
22-13-06
ALL ú ú 01 Page 402 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 864-045
(3)
Supply electrical power (AMM 24-22-00/201).
S 864-046
(4)
Remove hydraulic power from the hydraulic system No. 1
(AMM 29-11-00/201).
S 864-048
(5)
Set the FLT CONTROL HYD POWER WING 1 switch to the SHUTOFF position. This switch is on the Pilots' Overhead Maintenance Panel, P461.
S 864-047
(6)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P7, Overhead Circuit Breaker Panel
1) 7D12, FLT CONT CMPTR SERVO C
2) 7D13, FLT CONT CMPTR PWR C
3) 7E9, MCP L
4) 7E18, MCP R
(b)
P180, DC Power Distribution Panel
1) 180H7, LATERAL CONT VLV SYS 1
D. Lateral Autopilot Servo Filter Removal
S 164-049
CAUTION:_______DO NOT LET CONTAMINATION GET INTO THE LAS AND FILTERS. THE LAS AND FILTERS ARE SENSITIVE DEVICES. THE CONTAMINATION CAN CAUSE DAMAGE AND FAILURE TO THE LAS AND FILTERS.
(1)
Fully clean the area around the filter assembly and the filter mounting surfaces with a clean rag.
(2)
Remove the filter cover (2) from the LAS (1).
S 034-050
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22-13-06
ALL ú ú 01 Page 403 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 024-051
(3)
Remove the filter element (5) from the LAS (1).
S 034-052
(4)
Install a cover on the LAS opening to prevent the hydraulic port from contamination.
S 034-053
(5)
Remove the O-ring (4) and the backup rings (3) from the filter cover (2)(AMM 20-11-19/401). Discard the O-ring and keep the backup rings.
S 034-054
(6)
Remove the O-ring (7) and the backup rings (6) from the filter element (5). Discard the O-ring and keep the backup rings.
TASK 22-13-06-404-055
3. Lateral Autopilot Servo Filter Installation (Fig.___________________________________________401)
A. Standard Tools and Equipment
(1)
O-ring Installation Tool, ST848
(2)
Torque Wrench - Commercially available
B. Consumable Materials
(1)
G00062 Fluid - Hydraulic, Fire Resistant, BMS 10-11
(2)
D00054 Lubricant - Assembly, Skydrol, MCS352
C. References
(1)
AMM 09-11-00/201, Towing
(2)
AMM 20-11-19/401, O-Ring
(3)
AMM 24-22-00/201, Manual Control
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
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