12-21-21
ALL ú ú 01 Page 308 ú Jun 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
SPOILER DIFFERENTIAL MECHANISM
SEE A
ROLLER BEARINGS FLUSH
MIL-G-23827 (2 LOCATIONS) 1
CENTRAL CONTROL ACTUATOR LINK FLUSH
MIL-G-23827
(2 LOCATIONS)
CENTRAL CONTROL ACTUATOR LINK
SEE B
2 POINTS
A
2 POINTS
1 OPEN THE COVER TO LUBRICATE THE ROLLER BEARINGS.
REMOVE ALL EXCESS GREASE FROM EXTERIOR SURFACES. DO NOT APPLY GREASE TO THE ROLLING SURFACES. B
Spoiler Differential Mechanism Servicing (Lubrication)
Figure 304
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12-21-21
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A
747-400 MAINTENANCE MANUAL
SPEED BRAKE CONTROL SYSTEM - SERVICING (LUBRICATION)
____________________________________________________
1. General
_______
A. There is one task in this procedure; the lubrication of the speed brake sequence mechanism.
TASK 12-21-22-643-001
2. Speed Brake Sequence Mechanism Lubrication
__________________________________________
A. Consumable Materials
(1) D00013 Grease - MIL-G-23827
B. References
(1) 32-00-30/201, Landing Gear Door Locks
C. Access
(1) Location Zone
135 Wing Landing Gear Wheel Well, LH
136 Wing Landing Gear Wheel Well, RH
D. Procedure
S 493-015
(1) Make sure the landing gear ground locks are installed.
S 483-002
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(2)
Do this task: "Wing Landing Gear Door Lock Installation" (Ref 32-00-30/201).
S 643-016
(3)
Lubricate the speed brake sequence mechanism (Fig. 301).
E. Put the Airplane Back to Its Usual Condition
S 093-017
WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
_______ DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT REMOVE THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Do this task: "Wing Landing Gear Door Lock Removal" (Ref 32-00-30/201).
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12-21-22
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
FWD
FWD
SPEED BRAKE SEQUENCE MECHANISM
SEE A
SEE B
ROLLER BEARINGS FLUSH
1 (4 LOCATIONS) MIL-G-23827
A
4 POINTS
1 TWO COVER PLATES ARE ON THE BACK SIDE OF THE HOUSING. REMOVE ALL EXCESS GREASE FROM EXTERIOR SURFACES. ONE ROLLER IS UNDER EACH COVER PLATE. OPEN THE COVER PLATE AND APPLY GREASE TO THE ROLLER BEARINGS. TWO COVER PLATES ARE ON THE FRONT SIDE AND DO NOT APPLY GREASE TO THE ROLLING SURFACES. B
Speed Brake Sequence Mechanism Servicing (Lubrication) Figure 301
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12-21-22
ALL ú ú 01 Page 302 ú Jun 10/94
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A
747-400 MAINTENANCE MANUAL
LEADING EDGE FLAP SYSTEM - SERVICING (LUBRICATION)
__________________________________________________
1. General_______
A. Leading Edge Flap System - Servicing (Lubrication) contains the lubrication of the fittings in leading edge flap system (Fig. 301, 302).
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