(b)
P415, Power Distribution Center - Right 1) 415K27, PACK TEMP CONT A 2) 415C38, PACK TEMP CONT B
(c)
P6, Main Power Distribution Panel
1) 6F35, PACK TEMP CONT A
2) 6F36, PACK TEMP CONT B
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A
747-400 MAINTENANCE MANUAL
STA STA STA 650 1650 2010
SEEA SEEC
TEMPERATURE SEE B
SENSOR
SENSOR CONNECTOR
BOX FORWARD CARGO TEMPERATURE SENSOR ASSEMBLY AFT CARGO FAN MOTOR TEMPERATURE CONNECTOR SENSOR SENSORASSEMBLY
BOX
TEMPERATURE TEMPERATURESWITCHES
BULB CONNECTOR TEMPERATURE(REF) BULB CONNECTOR
TEMPERATURECOVER SENSORPLATE
CONNECTOR
SCREW FAN MOTOR WASHER CONNECTOR (10 LOCATIONS) BOLT
PLATE MOUNTING (3 LOCATIONS) WASHER
FWD A GASKET
BULK CARGOSENSOR TEMPERATURE
BOX SCREW
SENSOR WASHER
ASSEMBLY
(10 LOCATIONS) TEMPERATURE
GASKETSENSOR
CONNECTOR BOLT
COVER WASHER FAN MOTOR PLATE (3 LOCATIONS) CONNECTOR
B
TEMPERATURE BULB CONNECTOR
BOLT
SCREW WASHER
WASHER (3 LOCATIONS)(10 LOCATIONS)
COVER PLATE
GASKET TEMPERATURE CONTROL SWITCHES (REF) C
Cargo Temperature Sensor - Installation Figure 401
C68423
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747-400 MAINTENANCE MANUAL
(d) P415, Power Distribution Center - Right 1) 415K27, PACK TEMP CONT A 2) 415C38, PACK TEMP CONT B
S 014-005
(2)
Remove the ten screws and washers from the coverplate.
S 014-021
(3)
Remove the coverplate from the sensor assembly.
(a)
The sensor assembly coverplate for the forward cargo is on the compartment LH sidewall at Sta 650.
(b)
The sensor assembly coverplate for the aft cargo is on the compartment RH sidewall at Sta 1590.
(c)
The sensor assembly coverplate for the bulk cargo is on the compartment LH sidewall at Sta 2010.
S 034-006
(4) Remove these electrical connectors from the sensor assembly:
(a)
DT1627A, DT1627B, and DT1642, forward cargo
(b)
DT1628A, DT1628B and DT507, aft cargo.
(c)
DT1738A, DT1738B and DT962, bulk cargo.
S 034-007
(5)
Remove the three bolts and washers from the sensor flange.
S 024-008
(6)
Remove the sensor assembly with the gasket.
TASK 21-61-05-404-009
3. Temperature Sensor Assembly Installation (Fig. 401)________________________________________
A. References
(1)
24-22-00/201, Manual Control
(2)
AMM 45-10-00/201, Central Maintenance Computer System
(3)
IPC 21-43-02 Fig. 01
(4)
SSM 21-42-01, 21-61-08
B. Access
(1) Location Zone 121 Forward Cargo Compartment Forward Half, LH 142 Aft Cargo Compartment, RH 145 Bulk Cargo Compartment, LH
C. Procedure
S 424-010
(1) Install the temperature sensor on the mounting plate with the gasket.
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A 747-400 MAINTENANCE MANUAL
(2) S 434-011Attach the sensor to the mounting plate with the three bolts and washers.
(3) S 434-012Install these electrical connectors onto the sensor assembly: (a) DT1627A, DT1627B, and DT1642, forward cargo. (b) DT1628A, DT1628B and DT507, aft cargo. (c) DT1738A, DT1738B and DT962, bulk cargo.
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