(2)
Squib Protective Cover
M83723/60-210-AN or AC (Engine or APU)
M83723/60-112-AN or AC (Engine or APU)
M83723/60-18-AN or AC (Engine or APU)
M83723/60-110-AN or AC (Engine or APU)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-21-01
ALL ú ú 01 Page 408 ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
C. Reference
(1)
AMM 20-41-01/201, Electrostatic Discharge Sensitive Devices
(2)
AMM 24-22-00/201, Electrical Power - Control
D. Access
(1)
Location Zones
153 Aft Cargo Compartment (Left)
154 Aft Cargo Compartment (Right)
(2)
Access Panels
822 Aft Cargo Compartment Door
E. Remove the component.
S 864-027
(1) Open these circuit breakers on the main power distribution panel, P6, and attach DO-NOT-CLOSE tags:
(a)
For bottle 1:
1) 6H1, FIRE EXTINGUISHING ENG L BTL 1
2) 6H3, FIRE EXTINGUISHING ENG R BTL 1
(b)
For bottle 2:
1) 6H2, FIRE EXTINGUISHING ENG L BTL 2
2) 6H4, FIRE EXTINGUISHING ENG R BTL 2
S 034-028
(2) Disconnect the electrical connectors from the applicable bottle squibs and pressure switch. Refer to Table 401.
Table 401 Engine Fire Bottle Connections
~................................................................ | CONNECTOR | IS CONNECTED TO BOTTLE | .................................................................. | D2186 | B17, Bottle 1 - Pressure Switch | | D2188 | B17, Bottle 1 - Left Engine Discharge Squib | | D2190 | B17, Bottle 1 - Right Engine Discharge Squib | .................................................................. | D2270 | B18, Bottle 2 - Pressure Switch | | D2268 | B18, Bottle 2 - Left Engine Discharge Squib | | D2266 | B18, Bottle 2 - Right Engine Discharge Squib | 2.............…..................................................1
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26-21-01
ALL ú ú 01 Page 409 ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 434-118
WARNING:_______PUT A PROTECTIVE COVER ON THE FIRE BOTTLE SQUIB. IF YOU DO NOT PUT A PROTECTIVE COVER ON THE FIRE BOTTLE SQUIB, THE FIRE BOTTLE CAN RELEASE ITS CONTENTS SUDDENLY AND CAUSE INJURY TO PERSONS.
CAUTION:_______DO NOT PUT A SHUNT PLUG ON THE FIRE BOTTLE SQUIB. THE SHUNT PLUG CAN CAUSE DAMAGE TO THE SQUIB PINS.
(3)
Put a protective cover on the fire bottle squibs.
S 034-031
(4)
Remove the ground strap from the bottle ground lug, if it is installed.
NOTE:____Ground straps are not installed on all airplanes. Some fire extinguishing bottles are grounded through the bottle mounting flange.
S 034-032
(5)
Disconnect the discharge hoses.
S 434-033
(6)
Install the discharge port caps on the bottle discharge ports.
S 034-034
(7)
Remove the nuts and bolts (four places) from the mounting lugs.
S 024-035
(8)
Remove the extinguisher bottle.
TASK 26-21-01-404-036
5. Install the Engine Fire Extinguisher Bottle 1 or 2 (as applicable) (Fig. 401)__________________________________________________
A. General
(1) The two engine fire extinguisher bottles are in the front of the aft cargo compartment. Each fire extinguisher bottle has two discharge cartridges (squibs). The removal/installation procedure is the same for both bottles and squibs.
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