20-10-04
ALL ú ú 01 Page 402 ú Nov 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
E/E RACK- MOUNTED COMPONENTS - MAINTENANCE PRACTICES.
____________________________________________________
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 the 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 20-10-07-002-005
2. Rack Mounted E/E Box - Removal (Fig. 201)
______________________________
A. References
(1) AMM 20-40-12/201, Electro-Static Sensitive Devices
B. Access
(1) Location Zones
100 Lower Half of Fuselage
C. Procedure
S 862-057
(1)
Open the applicable circuit breakers to remove electrical power.
S 042-058
(2)
Disconnect the electrical connectors from the E/E box.
S 022-059
(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 022-074
(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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20-10-07
ALL ú ú 01 Page 201 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
BLACK BOX
UNIT
HANDLE
SEE A
ELECTRICAL LEVER LATCH
CONNECTORS (SHOWN IN
SEE B LOCKED
POSITION)
FORK
SHELF
LEVER LATCH TYPE RETENTION
(EXAMPLE)
UNIT FRONT PANEL
TORQUE RETAINER
LIMITING CARRIAGE NUT HOLD-DOWN HOOK
KNOB
SHELF
RETAINER CUP
EXTRACTOR
ASSEMBLY
SCREW TYPE RETENTION (EXAMPLE)
Electrical/Electronic Black Box Installation
Figure 201 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
20-10-07
ALL ú ú 01 Page 202 ú Nov 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
0.60
HANDLE LEVER (LOCKED POSITION)
TRAY ASSEMBLY FORK ASSEMBLY SHELF ASSEMBLY
TYPE I TYPE II
ADJUST FRONT HOLD DOWNS AS FOLLOWS:
WITH PLUG ON THE REAR OF UNIT FULLY ENGAGED AND THE HANDLE LEVER ON THE THE FRONT OF THE UNIT AT THE DIMENSION SHOWN, ADJUST FORKS BY ROTATING TO A POSITION WHERE THEY START TO EXERT PRESSURE ON THE LOCKING LEVER.
HANDLE
A B
CONNECTOR INCH INCH
TYPE MAX MAX
AD2 0.297 MAX
AMP 0.297 MAX
DPA 0.157 MAX
DPD 0.138 MAX
DPE UNKNOWN UNKNOWN
DPDMA 0.138 MAX
DPD2 0.138 MAX
DPXA 0.297 MAX
DPXB 0.297 MAX
DPX2 0.297 MAX
SR-RAI 0.581 MAX
0.09 INCH MAXIMUM FOR ANY CONNECTOR
FULLY MATED (ALTERNATE METHOD)
NOTE:DIMENSIONS CAN BE MEASURED WITH PUTTY OR A
MATED ELECTRICAL CONNECTORS (EXAMPLE)
PAPER SLEEVE OR RING OF A SUITABLE LENGTH
THAT WILL BE CRUSHED WHEN THE CONNECTOR IS
IS MATED PROPERLY.
Electrical/Electronic Black Box Installation
Figure 201 (Sheet 2)
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