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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 B. Parts
 ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 201 | 14 | Filter Cap |27-61-05 | 05 | 5 | | | 15 | Filter | | | 20 | | | 16 | Backup Ring | | | 10 | | | 17 | Packing (O-ring) | | | 15 | | | 18 | Backup Ring | | | 25 | | | 19 | Packing (O-ring) | | | 30 | 2......…........…...................................…..........….....….........1
 C. References
 (1)  
AMM 12-12-01/301, Hydraulic Systems

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 D.
Access

 (1)  
Location Zone
 585 Spoiler No. 1
 584 Spoiler No. 2
 583 Spoiler No. 3
 582 Spoiler No. 4
 682 Spoiler No. 9
 683 Spoiler No. 10
 684 Spoiler No. 11
 685 Spoiler No. 12

 E.
Procedure

 S 432-144
 (1)  
Install the filter:

 (a)  
Install the new O-rings (17 and 19) and backup rings (16 and 18) on the filter (15) and the filter cap (14). 1) Apply the hydraulic fluid to the O-rings, the backup rings

 and the threads of the fittings.

 (b)  
Install the filter and the cap. 1) Tighten the cap to 60-70 pound-inches (6.78-7.90 Nm).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
 2) Install the lockwire on the cap.
 S 862-079
 (2)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P180, DC Power Distribution Panel
 1) 180E6, LATERAL CONT VLV SYS 2
 2) 180H23, LATERAL CONT VLV SYS 3

 S 862-080
 (3)  
Put the FLT CONTROL HYD POWER - WING switches for systems No. 2 and No. 3 on the pilots' overhead panel, P5, to the NORM position.

 S 862-081

 (4)  
Do this task: "Hydraulic System Pressurization" (AMM 29-11-00/201).

 S 872-082

 (5)
Extend and retract the spoiler to bleed the hydraulic system.

 S 792-083

 (6)  
Examine the filter cap for leaks.

 F.
Put the Airplane Back to Its Usual Condition

 S 862-084
 (1)  
Put the flap control lever in the UP detent to retract the trailing edge flaps.

 S 862-085

 (2)  
Do this task: "Hydraulic System Depressurization"
 (AMM 29-11-00/201).

 S 612-086

 (3)  
Do this task: "Hydraulic Reservoir Servicing" (AMM 12-12-01/301).

 S 862-087

 (4)
Do this task: "Remove Electrical Power" (AMM 24-22-00/201).

 S 862-088

 (5)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P7, Overhead Circuit Breaker Panel
 1) 7G6, SPEED BRAKE AUTO CONT

 (6)  
Close the access doors.

 S 412-089
 TASK 27-61-05-002-090
 6.  Thermal Relief Valve Removal (Fig. 201)____________________________
 A. Special Tools and Equipment
 (1)  
G27032, No. 1 thru 4, and 9 thru 12, Spoiler Actuator Locking Tool

 B.
Standard Tools and Equipment

 (1)  
Bolt - 5/16-18, at least 3 inches long

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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