747-400 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 6(75)

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 S 862-122
 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.

 S 862-097

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

 S 492-098

 (5)
Install the spoiler actuator locking tool.

 S 862-099
 WARNING: DO NOT PUT A PART OF YOUR BODY BETWEEN THE SPOILER AND THE WING
_______ UNLESS THE SPOILER ACTUATOR IS LOCKED OR THE HYDRAULIC POWER IS RELEASED. THIS CAN CAUSE INJURY TO PERSONS.
 (6)
Do this task to depressurize hydraulic systems No. 1 and 4: "Hydraulic System Depressurization" (AMM 29-11-00/201).

 (7)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).

 S 862-101
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A
747-400
MAINTENANCE MANUAL

 S 862-102

 (8)  
Put the FLT CONTROL HYD POWER - WING system 4 switch on the pilots' overhead panel P5 to the SHUTOFF position.

 S 862-103

 (9)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P180, DC Power Distribution Panel
 1) 180E22, LATERAL CONT VLV SYS 4

 

 S 012-104
 (10)
 Open the wing access panel below the spoiler control package (572FB, left wing; 672FB, right wing).

 S 022-105

 (11)
 Remove the thermal relief valve:

 (a)  
Put a container below the spoiler control package to catch the hydraulic fluid.

 (b)  
Use a 5/16-18 bolt to remove the thermal relief valve cap (25) and valve (26).

 TASK 27-61-04-402-106
 7. Thermal Relief Valve Installation (Fig. 201)
_________________________________
 A. Standard Tools and Equipment
 (1)  
5/16-18 bolt at least 3 inches long

 B.
Consumable Materials

 (1)  
D00054, Lubricant - Hydraulic System, MCS 352

 (2)  
D00196, Fluid - Hydraulic, BMS 3-11, Class 1

 (3)  
D00149, Fluid - Hydraulic, BMS 3-11, Class 2, (optional to class 1)

 C.
Parts

 ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 201 | 25 | Thermal Relief Valve Cap | 27-61-04 | 05 | 35 | | | 26 | Thermal Relief Valve | | | 60 | | | 27 | Backup Ring | | | 50 | | | 28 | Packing (O-ring) | | | 55 | | | 29 | Backup Ring | | | 40 | | | 30 | Packing (O-ring) | | | 45 | 2......…........…...................................…..........….....….........1
 D. 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

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A
747-400
MAINTENANCE MANUAL

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

 (2)  
Access Panel
 572FB Trailing Edge Lower, LH
 672FB Trailing Edge Lower, RH

 F.
Procedure

 S 422-123
 (1)  
Install the thermal relief valve:

 (a)  
Install the new O-rings (28 and 30) and backup rings (27 and 29) on the valve (26) and the valve cap (25). 1) Apply the hydraulic fluid to the O-rings, the backup rings
　
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