S 214-074
(9)
Shake the E/E box to make sure of a tight fit. Tighten the extractor.
S 214-075
(10)
Make sure the electrical connector is engaged.
S 434-076
(11)
Install the connections to the front of the E/E box, if applicable.
S 864-077
(12)
Close all applicable circuit breakers.
D. AIRPLANES WITH LEVER LATCH HANDLES;
Do these steps:
S 434-095
(1) Slide the unit into the shelf with the lever in the open position until the lever engages the shelf-mounted fork.
NOTE: Remove any protective caps or bags from the unit or shelf
____
prior to installation.
S 434-096
(2) Move the lever latch to its locked position and verify proper adjustment.
TASK 20-11-22-004-097
4. Adjust Lever Latch Fork (Fig. 401)
_______________________
A. Prepare For Adjustment
S 014-098
(1) Open circuit breaker of unit to be adjusted.
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747-400 MAINTENANCE MANUAL
S 034-099
(2)
Press trigger and pull lever latch to open position.
S 024-100
(3)
Remove unit by handle.
S 434-101
(4)
If installed, loosen jamnut on fork assembly.
S 014-102
(5)
Examine all parts of latching mechanism for serviceability.
B.
Adjust Lever Latch Fork
S 434-103
(1)
Slide unit back on shelf until connectors are partially engaged.
S 434-104
(2)
Engage lever latch hook with fork assembly pin.
S 864-105
(3)
Start closing lever latch handle.
NOTE: It is possible to determine full connector engagement by
____ feel. A sudden increase in handle pressure, resistance to handle movement, indicates that the connectors are fully engaged.
S 824-106
(4) Adjust fork assembly until resistance to handle movement occurs within required gap tolerance (Fig. 401).
NOTE: Loosen the nut at the shelf area for fork adjustment.
____
S 824-107
(5)
Close handle until latched.
(6)
Tighten jamnut to snug fit.
S 434-108
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747-400 MAINTENANCE MANUAL
TASK 20-11-22-004-078
5. Remove the Circuit Card Assembly (Fig. 402)________________________________
A. References
(1) AMM 20-41-02/201, Electrostatic Sensitive Devices
B. Procedure
S 864-079
(1)
Open applicable circuit breakers to remove electrical power.
S 014-080
(2)
Open the card file door.
S 914-081
CAUTION: DO NOT TOUCH THE CARD ASSEMBLIES BEFORE YOU DO THE PROCEDURE
_______ FOR DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. CARD ASSEMBLIES ARE ELECTROSTATIC SENSITIVE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO DEVICES IN THE CARD ASSEMBLIES.
(3)
Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-02/201).
S 034-082
(4)
Turn the ejectors on the card assembly until the card is loose in the guide.
S 024-084
(5)
Carefully move the card out along the guide.
(6)
Remove the card assembly.
S 024-085
TASK 20-11-22-404-086
6. Install the Card Assembly_________________________
A. References
(1) AMM 20-41-02/201, Electrostatic Sensitive Devices
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