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A
737-300/400/500MAINTENANCE MANUAL
F. Put the Airplane Back to Its Usual Condition
S 864-017
(1)
Remove the electrical power if it is not necessary (Ref 24-22-00/201).
S 414-018
(2)
Close the overhead ceiling panel (Ref 25-21-45/401).
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A
737-300/400/500MAINTENANCE MANUAL
CABIN AIR SUPPLY TEMPERATURE BULB
SEE A
CABIN AIR SUPPLY
TEMPERATURE BULB
SEE B
FWD
OVERHEAD DISTRIBUTION MANIFOLD
O-RING
A 1
TEMPERATURE BULB
ELECTRICAL
CONNECTOR
TEMPERATURE BULB SEE B
FWD
B
DISTRIBUTION DUCTS FWD
OVERHEAD DISTRIBUTION DUCT
A2
1AIRPLANES WITH OVAL AIR DUCTS
AIRPLANES WITH ROUND AIR DUCTS2
Cabin Air Supply Temperature Bulb Installation Figure 401
E85132
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737-300/400/500MAINTENANCE MANUAL
PASSENGER CABIN TEMPERATURE BULB - REMOVAL/INSTALLATION
_______________________________________________________
TASK 21-62-25-004-038
1. Remove the Temperature Bulb for the Passenger Cabin (Fig. 401)___________________________________________________
A. References
(1)
24-22-00/201, Electrical Power
(2)
25-23-61/201, Main Passenger Cabin Passenger Service Unit
B. Access
(1) Location Zone
107 Forward Half of Cabin
C. Prepare for the Removal
S 864-001
(1) Open this circuit breaker and attach a DO-NOT-CLOSE tag:
(a) P6-4, circuit breaker panel for the load control 1) TEMP IND
S 984-002
(2) Get access to the five screws that attach the bullnose to the PSU beam.
(a) Lower the passenger service unit for the main passenger cabin assembly (PSU).
S 034-003
(3) Remove the screws and the bullnose (Ref 25-23-61/201).
D. Remove the Bulb
S 034-004
(1)
Disconnect the electrical connector from the temperature bulb.
(2)
Remove the lockwire and remove the temperature bulb.
S 034-012
TASK 21-62-25-404-013
2. Install the Temperature Bulb for the Passenger Cabin (Fig. 401)____________________________________________________
A. References
(1)
24-22-00/201, Electrical Power
(2)
25-23-61/201, Main Passenger Cabin Passenger Service Unit
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737-300/400/500MAINTENANCE MANUAL
B. Access
(1) Location Zone
107 Forward Half of Cabin
C. Procedure
S 434-014
(1)
Install the temperature bulb in the sensor duct and install the lockwire.
S 434-024
(2)
Connect the electrical connector to the temperature bulb.
D. Do a Test of the Temperature Bulb for the Passenger Cabin
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