(2)
G27032-1, Outboard Spoiler Actuator Lock (Optional).
(3)
MIT69B82662-18, Outboard Spoiler Socket Adapter Assembly
(4)
24MIT65B00002, Safety Device for Wing and Stabilizer
B.
Standard Tools and Equipment
(1)
Load Positioner (for 90 Pounds) - LL-5-3, Permadur Industries Inc, 47 Old Camplain RD, P.O. Box 1032, Somerville, New Jersey 08876
C.
References
(1)
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
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747-400 MAINTENANCE MANUAL
E. Prepare for the Removal
S 864-002
WARNING:_______OPEN THE CIRCUIT BREAKER TO PREVENT THE SPOILER RETRACTION. IF YOU USE THE SPEED BRAKE LEVER TO LIFT THE SPOILERS, AND IF YOU RELEASE PRESSURE IN SYSTEM 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
(b)
P6 Main Power Distribution Panel
1) 6J20, SPOILER/AIL SENSOR
2) 6J21, SPOILER/AIL IND
S 864-004
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: "Hydraulic System Pressurization" (AMM 29-11-00/201).
S 864-005
(3)
Put the speed brake control lever in the UP position to lift the spoilers.
S 864-061
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.
(4)
Put the flap control lever in the 30-unit detent to extend the trailing edge flaps.
S 494-007
(5)
Install the spoiler actuator locking tools to keep the control package in the extended position.
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747-400 MAINTENANCE MANUAL
S 864-008
(6)
Do this task: "Hydraulic System Depressurization"
(AMM 29-11-00/201).
S 494-009
(7)
Install the safety device.
F.
Remove the Spoiler
S 494-010
(1)
Attach the sling assembly, a load positioner, and an applicable hoist to the spoiler (Fig. 401).
(a)
Balance the load positioner for 60 pounds.
S 024-011
(2)
Remove the spoiler:
(a)
Disconnect the spoiler from the control package:
1) Remove the bolt (30), washer (28), bushings (27), and nut (29) from the rod end.
(b)
Remove the bolt (8), washer (9), and nut (10) to disconnect the bonding jumpers from the outer hinges.
(c)
On spoilers No. 4 or 12, remove the screw (31), washer (32), and nut (33) to disconnect the adjustment rod (34) for the position indicator.
(d)
Disconnect the spoiler from the hinges:
