(2)
AMM 54-62-00/201, Nacelle Strut Access Panels
B.
Access
(1)
Location Zone
454 System 1 - Strut Trailing Edge Fairing
484 System 4 - Strut Trailing Edge Fairing
(2)
Access Panel
454A Trailing Edge Fairing Doors - System 1
484A Trailing Edge Fairing Doors - System 4
C.
Procedure
(1)
Open the left door of the trailing edge fairing (AMM 54-62-00/201).
(2)
Release the pressure in the pneumatic system (AMM 36-00-00/201).
S 864-019
(3)
For the applicable hydraulic system, open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P7 Overhead Circuit Breaker Panel
1) 7F03 HYDRAULICS HYDIM 1
S 014-002
S 864-003
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-39
ALL ú ú 01 Page 401 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
SHUTOFF VALVE ACTUATOR
ENGINE NACELLE STRUT BOLT WASHER (2 LOCATIONS)
POSITION SWITCH FOR THE SHUTOFF VALVE
BRACKET
WIRE HARNESS
SHUTOFF AND SPEED
LEVER WHICH ELECTRICAL LOCKNUT
CONTROL VALVE OPERATES THE RECEPTACLE WASHERPOSITION SEE A
CLAMP (2 LOCATIONS)
SWITCH BOLTFWD
BOLT WASHER (QTY 2) WASHERS
NUT
NUT
(4 LOCATIONS)
SHUTOFF VALVE ACTUATOR
B
SHUTOFF VALVE
ACTUATOR
SEE B
SHUTOFF AND SPEED
CONTROL VALVE
FWD
SHUTOFF AND SPEED
CONTROL VALVE
A
Shutoff Valve Position Switch Installation
Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-39
ALL ú ú 01 Page 402 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
2) 7G03 HYDRAULICS HYDIM 2 3) 7H03 HYDRAULICS HYDIM 3 4) 7J03 HYDRAULICS HYDIM 4
S 034-005
(4)
Disconnect the applicable electrical connector from the shutoff valve actuator:
(a)
DM647B for system 1
(b)
DM874B for system 4
S 034-006
(5)
Remove the four bolts which attach the electrical receptacle to the shutoff valve actuator.
S 034-020
(6)
Remove the electrical connector from the shutoff valve actuator.
S 034-021
(7)
Remove the two bolts which attach the bracket of the position switch to the shutoff valve actuator.
S 024-007
(8)
Remove the bracket and the position switch from the shutoff valve actuator.
S 034-008
(9)
Remove the bolt which attaches the clamp, on the wire harness, to the bracket.
S 034-022
(10)
Remove the clamp from the wire harness.
S 034-009
(11)
Remove the locknut from the position switch.
S 024-023
(12)
Remove the position switch from the bracket.
TASK 29-11-39-404-010
3. Shutoff Valve Position Switch Installation (Fig. 401)__________________________________________
A. References
(1)
AMM 54-62-00/201, Nacelle Strut Access Panels
B.
Access
(1)
Location Zone
454 System 1 - Strut Trailing Edge Fairing
484 System 4 - Strut Trailing Edge Fairing
(2)
Access Panel
454A Trailing Edge Fairing Doors - System 1
484A Trailing Edge Fairing Doors - System 4
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
29-11-39 中國航空網(wǎng) m.k6050.com 航空翻譯 www.aviation.cn 本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 液壓 HYDRAULIC 2(64)
