and the threads of the fittings.
(b)
Use a 5/16-18 bolt to install the valve. 1) Tighten the cap to 60-70 pound-inches(6.78-7.91Nm). 2) Install the lockwire on the cap.
S 862-109
(2)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P180, DC Power Distribution Panel
1) 180E22, LATERAL CONT VLV SYS 4
S 862-110
(3)
Put the FLT CONTROL HYD POWER - WING system 4 switch on the pilots' overhead panel P5 to the NORM position.
S 862-111
(4)
Do this task to pressurize hydraulic system No. 4: "Hydraulic System Pressurization" (AMM 29-11-00/201).
S 872-112
(5)
Extend and retract the spoiler to bleed the hydraulic system.
S 792-113
(6)
Examine the valve cap for leaks.
G.
Put the Airplane Back to Its Usual Condition
(1)
Close the access panel on the lower surface of the wing.
S 862-115
(2)
Do this task to depressurize hydraulic system No. 4: "Hydraulic System Depressurization" (AMM 29-11-00/201).
(3)
Do this task: Hydraulic Reservoir Servicing" (AMM 12-12-01/301).
S 412-114
S 612-116
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A 747-400 MAINTENANCE MANUAL
(4) S 862-117Do this task: "Remove Electrical Power" (AMM 24-22-00/201).
(5) S 862-118Remove the DO-NOT-CLOSE tags and close these circuit breakers: (a) P7, Overhead Circuit Breaker Panel 1) 7G6, SPEED BRAKE AUTO CONT
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A
747-400 MAINTENANCE MANUAL
OUTBOARD FLIGHT SPOILER CONTROL PACKAGE - MAINTENANCE PRACTICES
_______________________________________________________________
1. General_______
A. There are six tasks in this procedure. There is a task for the removal and a task for the installation of an outboard spoiler control package, a filter and a thermal relief valve.
(1)
The spoiler control package installation procedure has these parts:
(a)
The installation of the spoiler control package
(b)
An adjustment of the spoiler clearances
(2)
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.
(3)
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 27-61-05-002-001
2. Spoiler Control Package Removal (Fig. 201)_______________________________
A. Special Tools and Equipment
(1)
G27032, No. 1 thru 4, 9 thru 12, 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
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
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