(3)  
The control package filter and the thermal relief valve removal procedures have these parts:

 (a)  
An extension of the flaps

 (b)  
An extension of the spoilers

 (c)  
The depressurization of the hydraulic system

 (d)  
The removal of the filter or the thermal relief valve.

 (4)  
The control package filter and the thermal relief valve installation procedures have these parts:

 (a)  
The installation of new O-rings on the valve and the cap

 (b)  
The installation of the filter or the thermal relief valve

 (c)  
The pressurization of the hydraulic system

 (d)  
A retraction of the flaps.

 TASK 27-61-04-002-001
 2.  Spoiler Control Package Removal (Fig. 201)_______________________________
 A.  Special Tools and Equipment
 (1)  
G27001-1, No. 5 and 8 Spoiler Actuator Locking Tool

 B.  
References

 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 29-11-00/201, Main Hydraulic Supply System

 C.  
Access

 (1)  
Location Zone
 575 Spoiler No. 5
 675 Spoiler No. 8

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 27-61-04
 ALL  ú ú 01 Page 201 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
Access Panel
 572FB Trailing Edge Lower
 672FB Trailing Edge Lower

 D.
Procedure

 S 862-002
 WARNING: OPEN THE CIRCUIT BREAKERS TO PREVENT THE SPOILER RETRACTION.
_______ IF YOU USE THE SPEED BRAKE LEVER TO LIFT THE SPOILERS, AND IF YOU RELEASE THE PRESSURE IN SYSTEMS NO. 1 AND 4, THE SPOILERS WILL AUTOMATICALLY RETRACT. THIS CAN CAUSE INJURY TO PERSONS.
 (1)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

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

 S 862-003
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
_______ SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, LANDING GEAR AND THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  Do this task to pressurize hydraulic systems No. 1 and 4:
 "Hydraulic System Pressurization" (AMM 29-11-00/201).

 S 862-119
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
 (3)  
Put the flap control lever in the 30-unit detent to extend the trailing edge flaps.

 (4)  
Put the speed brake control lever in the UP position.

 S 862-005
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 ALL  ú ú 01 Page 202 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
SPOILER HINGE
5A. SHIM (4 LOCATIONS)
INBOARD FLIGHT
SPOILER

PISTON ROD END
SEE C
INBD
8. BOLT 10. WASHER
10. WASHER
9. NUT
A
747-400 MAINTENANCE MANUAL
SEE A
A
1. SPOILER
A
CONTROL
PACKAGE

2. HYDRAULIC
LINES C

B
INPUT ARM ROD ASSEMBLY
SEE B
C B
RIG PIN A/S-21 (A/S-19 LEFT)
RATIO CHANGER LINKAGE
3.
 BOLT

PACKAGE
4.
 WASHER

INPUT ARM
5.
 NUT RATIO CHANGER

FWD
(4 LOCATIONS) ACTUATOR

INBOARD FLIGHT SPOILER NO. 8 POWER CONTROL
PACKAGE SHOWN, SPOILER NO. 5 EQUIVALENT

GROUND SPOILER
A
11. WASHER 8. BOLT
7. WASHER  18. BOLT
QUADRANT OUTPUT ARM
17. WASHER
　
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