757 MAINTENANCE MANUAL
FILTER/DRYER - REMOVAL/INSTALLATION
___________________________________
1. General
_______
A. The filter/dryer is installed near the cargo fire extinguishing bottles, forward area of the aft cargo compartment forward endliner panel.
B. After the cargo fire extinguishing bottles are discharged, you must replace the fire extinguishing bottles, the squibs, and the applicable filter and regulator.
TASK 26-23-04-004-001
2. Remove the Filter/Dryer (Fig. 401)
_______________________
A. Access
(1) Location Zones
153 Aft Cargo Compartment (Left)
154 Aft Cargo Compartment (Right)
B. Procedure
S 864-002
(1) Open these circuit breakers on the main power distribution panel, P6, and attach DO-NOT-CLOSE tags:
(a)
6H1, FIRE EXT BTL 1 ENG L
(b)
6H5, FIRE EXTINGUISHING CARGO BTL 1
(c)
6H6, FIRE EXTINGUISHING CARGO BTL 2
S 014-003
(2)
Get access to the filter/dryer.
S 034-004
(3)
Loosen the nuts that connect the tubing to the filter/dryer.
S 024-005
(4)
Remove the filter/dryer.
NOTE: If the fire bottle was discharged through the filter/dryer,
____ you must replace the filter/dryer with a new one. The filter/dryer will only work one time.
TASK 26-23-04-404-006
3. Install the Filter/Dryer (Fig. 401)
________________________
A. References
(1) 26-23-00/501, Cargo Fire Extinguishing System - Adjustment/Test
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH METERED CARGO FIRE ú
26-23-04
EXTINGUISHING SYSTEM ú ú 01 Page 401 ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
TUBING
NUTS
FILTER/DRYER
SEE A
TUBING
FILTER/DRYER
B
TO FORWARD
COMPARTMENT TO AFT
(YELLOW) COMPARTMENT
(BLUE)
FORWARD DISCHARGE
LINE PRESSURE
SWITCH, S633
CARGO FIRE CARGO FIRE
EXTINGUISHER EXTINGUISHER
BOTTLE NO. 1, BOTTLE NO. 2,
M10466 M10467
HARD POINT
CONNECTOR HARD POINT
CONNECTOR
FILTER/DRYER AFT METERED DISCHARGE
LINE PRESSURE
REGULATOR SWITCH, S10565 FILTER/DRYER
SEE B
A
Filter/Dryer Installation
Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITH METERED CARGO FIRE ú
26-23-04
EXTINGUISHING SYSTEM ú ú 01 Page 402 ú Sep 20/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
H56721
A
757
MAINTENANCE MANUAL
(2) IPC 26-23-51-02
B. Access
(1) Location Zones
153 Aft Cargo Compartment (Left)
154 Aft Cargo Compartment (Right)
C. Procedure
S 864-007
(1)
Make sure the inner part of the filter/dryer is not broken.
S 434-008
(2)
Put the filter/dryer in position between the ends of the tubing.
S 424-009
CAUTION: YOU MUST INSTALL THE FILTER/DRYER IN THE CORRECT POSITION AND
_______ AND FLOW DIRECTION. IF IT IS INSTALLED INCORRECTLY, THE SYSTEM WILL NOT OPERATE CORRECTLY.
(3) Connect the filter/dryer to the tubing with the nuts.
(a) Make sure that the filter/dryer is installed tightly on the tubing.
S 864-010
(4) Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P6 panel:
(a)
6H1, FIRE EXT BTL 1 ENG L
(b)
6H5, FIRE EXTINGUISHING CARGO BTL 1
(c)
6H6, FIRE EXTINGUISHING CARGO BTL 2
S 734-011
(5) Do the System Test for the Metered Fire Extinguisher Discharge Lines (AMM 26-23-00/501).
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