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747-400 MAINTENANCE MANUAL
CREW REST AREA ZONE DUCT TEMPERATURE SENSOR

Zone Duct Temperature Sensor - Installation
Figure 401 (Sheet 1)

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D00731
A
747-400 MAINTENANCE MANUAL
SEE B
PACK 3 WATER SEPARATOR (REF)
PACK 3 WATER SEPARATOR
SEE C  (REF)
FORWARD CARGO CONDITIONED AIR SUPPLY
(IN RIGHT AIR CONDITIONING EQUIPMENT BAY)

B

FORWARD CARGO DUCT OVERTEMPERATURE SWITCH (REF)
SCREW WASHER
ELECTRICAL
(2 LOCATIONS) CONNECTOR
FORWARD CARGO DUCT TEMPERATURE SENSOR
C

Zone Duct Temperature Sensor - Installation
Figure 401 (Sheet 2)

D00857
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747-400
MAINTENANCE MANUAL

DSEE TEMPERATURE SENSOR AFT CARGO ZONE DUCT 
AFT CARGO ZONE DUCT TEMPERATURE SENSOR  CONNECTOR ELECTRICAL 
SCREW, WASHER (2 LOCATIONS) 

AFT CARGO ZONE DUCT
LOCKWIREOVERTEMPERATURE SWITCH (REF)
D
Zone Duct Temperature Sensor - Installation Figure 401 (Sheet 3)
D00834
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747-400 MAINTENANCE MANUAL
 (2)  Access Panel
 192BR Air Conditioning Access Panel

 C.  Prepare for the Removal
 S 864-002
 (1)  Open these circuit breakers on the P6 main power distribution panel and attach DO-NOT-CLOSE tags:
 (a)  
6F28, ZONE TEMP CONT AC

 (b)  
6F29, ZONE TEMP CONT DC

 S 014-005
 (2)  Get access to the applicable duct temperature sensors:
 (a)  
FLIGHT DECK AND UPPER DECK

 1)  Get access to the area behind the crew rest area through the access door at the aft right side of the crew rest area.

 (b)  
CREW REST AREA

 1)  Remove the main deck ceiling panel that is on the airplane centerline at STA 820 (AMM 25-59-01/401).

 (c)  
FORWARD MAIN DECK

 1)  Remove the ceiling panel that is on the airplane centerline at STA 910 (AMM 25-59-01/401).

 (d)  
AFT MAIN DECK

 1)  Remove the ceiling panel that is on the airplane centerline at STA 1292 (AMM 25-59-01/401).

 (e)  
FORWARD CARGO COMPARTMENT 1) Open the access panel, 192BR (Ref 06-09-03/201).

 (f)  
AFT CARGO COMPARTMENT

 1)  Install the ground locks for the landing gear (AMM 09-11-00/201).
 WARNING: REFER TO 32-00-30/201 FOR THE CORRECT INSTALLATION
_______ OF THE LOCKS FOR THE LANDING GEAR DOORS. THE DOORS CAN MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO THE EQUIPMENT IF YOU DO NOT INSTALL THE LOCKS CORRECTLY.
 2)  Install the door locks for the body landing gear and the wing landing gear (AMM 32-00-30/201).
 S 034-006
 (3)  Disconnect the electrical connector from the applicable duct temperature sensor:
　
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