B. The standard practices in this chapter also apply to the engine buildup components installed on the basic engine. Standard practices that apply to the basic engine are provided in Chapter 70, Standard Practices -Engine.
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E/E RACK-MOUNTED COMPONENTS - REMOVAL/INSTALLATION
__________________________________________________
1. General_______
A. This procedure contains four tasks:
(1)
The first task is the removal of the rack-mounted
electrical/electronic (E/E) boxes.
(2)
The second task is installation of the rack-mounted (E/E) boxes.
(3)
The third task is the removal of the circuit card assemblies.
(4)
The fourth task is the installation of the circuit card assemblies.
TASK 20-10-01-004-005
2. Remove the Rack Mounted E/E Box (Fig. 401)_______________________________
A. Reference
(1) AMM 20-41-01/201, Electro-Static Sensitive Devices
B. Access
(1) Location Zone
100 Lower Half of Fuselage
C. Procedure
S 864-002
(1)
Open the applicable circuit breakers to remove electrical power.
S 044-003
(2)
Disconnect the electrical connectors from the E/E box.
S 034-004
(3)
Turn the front hold-down extractor knob counterclockwise to disengage the extractor clutch. Turn the keeper to align the deep slot with the T-hook. Lower the extractor off the T-hook.
NOTE: Apply a sufficient amount of pressure down on the front-face
____
of the E/E box during removal.
S 034-006
CAUTION:_______SOME E/E BOXES ARE STATIC SENSITIVE. TAKE THE NECESSARY PRECAUTIONS WHEN YOU ARE TO HOLD THE E/E BOXES. READ THE PROCEDURE ON HOW TO HOLD ELECTROSTATIC-DISCHARGE SENSITIVE DEVICES (AMM 20-41-01/201). THE E/E BOXES CONTAIN DEVICES THAT CAN BE DAMAGED BY STATIC DISCHARGE.
(4) Carefully remove the E/E box out from the tray.
NOTE: The E/E box front face can be moved right to left
____ (about 1/8 inch). This will help disconnect the E/E box from the electrical connection.
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MAINTENANCE MANUAL
EXTRACTOR
INSTALLED E/E BOX WITH EXTRACTOR TIGHTENED TRIDAIR EXTRACTORS E/E Box Installation Figure 401
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MAINTENANCE MANUAL
(TYP)
FASTENER (TYP)
E/E Card Assembly Installation
Figure 402
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S 214-008
(5)
Make sure that the connector is fully disengaged before the removal of the E/E box.
S 434-009
(6)
Install dust caps on the E/E box electrical connector and on the tray electrical connector.
TASK 20-10-01-424-011
3. Install Rack Mounted E/E Box (Fig. 401)____________________________
A. Reference
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本文链接地址：757 AMM 飞机维护手册 STANDARD PRACTICES - AIRFRAME(3)
