757 MAINTENANCE MANUAL
GROUND SERVICE TRANSFER RELAY - REMOVAL/INSTALLATION
____________________________________________________
1. General
_______
A. This procedure has two tasks. The first task removes the ground service transfer relay (referred to as the relay) from the airplane. The second task installs the relay on the airplane.
TASK 24-51-03-024-001
2. Remove the Ground Service Transfer Relay (Fig. 401)
________________________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 27-61-00/201, Spoiler/Speedbrake
B. Access
(1)
Location Zones
211/212 Flight Compartment
119/120 Main Equipment Center
(2)
Access Panel
119AL Main Equipment Center
C. Prepare for the Removal
S 044-011
WARNING: DO THE DEACTIVATION PROCEDURE FOR THE SPOILERS OR MOVE ALL
_______ PERSONS AND EQUIPMENT AWAY FROM THE SPOILERS. THE SPOILERS CAN RETRACT QUICKLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1) Do the deactivation procedure for the spoilers (AMM 27-61-00/201) or move all persons and equipment away from the spoilers.
S 044-012
WARNING: REMOVE THE ELECTRICAL POWER FROM THE AIRPLANE WHEN YOU REMOVE
_______ OR INSTALL COMPONENTS IN THE POWER PANELS. HIGH VOLTAGES CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(2)
Remove electrical power (AMM 24-22-00/201).
S 864-013
(3)
Open this main power distribution panel P6 circuit breaker, and attach a DO-NOT-CLOSE tag:
(a) 6B4, BUS PWR CONT UNIT
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
Ground Service Transfer Relay Installation
Figure 401
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
D. Procedure
S 024-010
(1) Remove the relay as follows:
(a)
Open the applicable P34 panel or the P37 panel.
(b)
Remove the terminal cover on the relay.
(c)
Identify the wires.
(d)
Remove the wires from the relay.
(e)
Remove the screws which attach the relay to the panel.
(f)
Remove the relay.
TASK 24-51-03-424-002
3. Install the Ground Service Transfer Relay (Fig. 401)_________________________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 27-61-00/201, Spoiler/Speedbrake
B. Access
(1)
Location Zones
211/212 Flight Compartment
119/120 Main Equipment Center
(2)
Access Panel
119AL Main Equipment Center
C. Procedure
S 424-003
(1) Install the relay as follows:
(a)
Attach the relay to the panel with the installation screws.
(b)
Connect the wires to the relay.
(c)
Install the terminal cover on the relay.
(d)
Close the applicable P34 panel or the P37 panel.
S 864-004
(2) Remove the DO-NOT-CLOSE tag, and close this P6 panel circuit breaker:
(a) 6B4, BUS PWR CONT UNIT
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本文链接地址：757 AMM 飞机维护手册 电源 ELECTRICAL POWER 2(92)
