(2)
AMM 52-34-00/201, No. 1 and No. 2 Cargo Doors
B. Access
(1)
Location Zones
121/122 Forward Cargo Compartment
153/154 Aft Cargo Compartment
211/212 Flight Compartment
820 Lower Half of Fuselage
(2)
Access
821 No. 1 Cargo Compartment Door
822 No. 2 Cargo Compartment Door
C. Procedure
S 864-002
(1)
Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags:
(a)
11S35, FIRE DET CARGO CONT or CARGO SMOKE BLOWER CONT
(b)
11S36, FIRE DET FAN PWR or CAR SMK BLO
(2)
Open cargo door (AMM 52-34-00/201).
(3)
Get access to the pressure switch.
(4)
Remove the electrical connector.
S 034-005
(5)
Remove the tiedown strap which holds the plastic tube to the air port of the pressure switch.
(6)
Remove the plastic tube from the air port.
S 014-050
S 014-003
S 034-004
S 034-006
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-16-03
ALL ú ú 01 Page 401 ú Jan 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
FWD
SEE A
SEE C
SEE B
FORWARD CARGO COMPARTMENT
A
SEE D (REF) FWD PLENUM PRESSURE
DETECTOR
TIE DOWN
SWITCH
STRAP
AFT CARGO COMPARTMENT
PLASTIC TUBE
B
PLENUM
(REF)SCREW WASHER ELECTRICAL
CONNECTOR TIE DOWN(4 LOCATIONS)
SCREW
STRAP
WASHER
(4 LOCATIONS)
BLOWER
(REF)
SMOKE DETECTOR INSTALLATION AFT CARGO COMPARTMENT
DETECTOR
(REF)
D
ELECTRICAL CONNECTOR
PLASTIC FWD
TUBEPLENUM PRESSURE SWITCH
PLENUM
(REF)
SMOKE DETECTOR INSTALLATION FORWARD CARGO COMPARTMENT
C
Cargo Smoke Detector Plenum Pressure Switch Installation
Figure 401
H43900
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
26-16-03
ALL ú ú 01 Page 402 ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
S 034-007
(7)
Remove the four screws and washers.
S 034-043
(8)
Remove the pressure switch.
TASK 26-16-03-424-008
3. Install the Pressure Switch (Fig. 401)___________________________
A. References
(1)
AMM 24-22-00/201, Electrical Power - Control
(2)
AMM 52-34-00/201, No. 1 and No. 2 Cargo Doors
B. Access
(1)
Location Zones
121/122 Forward Cargo Compartment
153/154 Aft Cargo Compartment
211/212 Flight Compartment
820 Lower Half of Fuselage
(2)
Access
821 No. 1 Cargo Compartment Door
822 No. 2 Cargo Compartment Door
C. Install the Pressure Switch
S 424-009
(1)
Install the pressure switch with the four screws and washers.
S 424-041
(2)
Install the plastic tube on the air port of the pressure switch.
NOTE: The tube must move along the air port for approximately
____ 0.7 inch (1.8 cm).
S 434-010
(3)
Tighten the plastic tube to the air port. Use the tiedown strap.
(4)
Install the electrical connector.
(5)
Close the access.
S 434-011
S 414-012
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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