20-10-07
ALL ú ú 01 Page 206 ú Jul 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
CARD ASSEMBLY (EXAMPLE)
EJECTOR
FASTENER
(EXAMPLE)
1
CAN BE INSTALLED ON
BOTH TOP AND BOTTOM
E/E Card Assembly Installation Figure 202
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
20-10-07
ALL ú ú 01 Page 207 ú Jul 15/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 422-077
(11)
Tighten the extractor.
S 212-069
(12)
Make sure the electrical connector is engaged.
S 422-070
(13)
Install the connections to the E/E box front if it is applicable.
S 862-071
(14)
Close all the applicable circuit breakers.
D.
AIRPLANES WITH LEVER LATCH HANDLES; 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 862-078
(1) Move the lever latch to its locked position and verify proper adjustment.
TASK 20-10-07-822-083
4. Adjust Lever Latch Fork
_______________________
A. Prepare For Adjustment
S 012-040
(1)
Open circuit breaker of unit to be adjusted.
S 032-041
(2)
Press trigger and pull lever latch to open position.
S 022-042
(3)
Remove unit by handle.
(4)
If installed, loosen jamnut on fork assembly.
S 012-044
(5)
Examine all parts of latching mechanism for serviceability.
B.
Adjust Lever Latch Fork
(1)
Slide unit back on shelf until connectors are partially engaged.
(2)
Engage lever latch hook with fork assembly pin.
S 432-043
S 432-045
S 432-046
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20-10-07
ALL ú ú 01 Page 208 ú Jul 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 862-047
(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 822-048
(4) Adjust fork assembly until resistance to handle movement occurs within required gap tolerance, as shown in Fig 201 (Sheet 2).
NOTE: Loosen the nut at the shelf area for fork adjustment.
____
CAUTION: MAKE SURE THERE IS SUFFICIENT THREAD ENGAGEMENT IN THE
_______ LATCH FORK. WITHOUT SUFFICIENT THREAD ENGAGEMENT THE LATCH LEVER COULD FAIL, ALLOWING THE BLACK BOX TO SLIDE OUT OF POSITION.
(a) Make sure there is sufficient thread engagement in the latch fork.
S 822-049
(5)
Close handle until latched.
S 432-050
(6)
Tighten jamnut to snug fit.
TASK 20-10-07-202-037
5. Circuit Card Assembly - Removal
_______________________________
A. References
(1) AMM 20-40-12/201, Electro-Static Sensitive Devices
B. Access
(1) Location Zones
100 Lower Half of Fuselage
C. Procedure (Fig. 202)
S 862-051
(1)
Open the applicable circuit breakers to remove electrical power.
(2)
Open the card file door.
S 862-080
(3)
Turn the ejectors on the card assembly until the card is loose in the guides.
S 012-055
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