(b)  
Remove the temperature bulb but do not disconnect the
 electrical connector.

 CAUTION:  DO NOT INCREASE THE TEMPERATURE OF THE TEMPERATURE BULB
_______ TOO MUCH. IF YOU INCREASE THE TEMPERATURE TOO MUCH, THE TEMPERATURE INDICATOR NEEDLE CAN MOVE PAST ITS LIMIT. THIS CAN CAUSE DAMAGE TO THE TEMPERATURE INDICATOR.
 (c)  Use the specified heat source equipment to increase the temperature of the temperature bulb.
 NOTE: If you do not use the equipment, you can blow hot air
____ through the sensor duct inlet to increase the temperature of the temperature bulb.
 (d)  
Make sure the temperature indication increases.

 (e)  
Remove the heat from the temperature bulb.

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 (f)  Use the specified cool source equipment to decrease the
 temperature of the temperature bulb.
 NOTE:____ If you do not use the equipment, you can blow cold air
 through the sensor duct inlet to decrease the
 temperature of the temperature bulb.
 (g)  Make sure the temperature indication decreases.
 (h)  Install the temperature bulb.
 (i)  Install the bullnose.

 S 035-055
 (3)  
Disconnect the electrical connector, D490, from the right pack valve.

 S 865-056

 (4)  
Move the R PACK switch to AUTO.

 S 865-057

 (5)  
Move the AIR TEMP switch to PASS CABIN.

 S 975-058

 (6)  
Monitor the temperature indicator and make a record of the cabin temperature.

 S 885-059

 (7)  
If the cabin temperature is less than 65°F (18°C), do this step:

 (a)  Use the specified heat source equipment to increase the temperature of the cabin temperature sensor to 75|1.5°F (24|.83°C).
 S 885-060
 (8)  If the cabin temperature is more than 85°F (30°C), do this step:
 (a)  Use the specified cool source equipment to decrease the temperature of the cabin temperature sensor to 75|1.5°F (24|.83°C).
 S 865-061
 (9)  
Put the PASS CABIN - AIR MIX VALVE to its middle position:

 (a)  
Move the PASS CABIN temperature selector switch to MANUAL WARM.

 (b)  
Make sure the indicator needle of the PASS CABIN - AIR MIX VALVE indicator moves to the middle position (12 o'clock).

 (c)  
Move the PASS CABIN temperature selector switch to AUTO NORMAL position.

 (d)  
Adjust the PASS CABIN temperature selector switch until the indicator needle of the PASS CABIN - AIR MIX VALVE indicator stays at the middle position.

 (10)
 Move the PASS CABIN temperature selector switch counterclockwise.

 S 865-062
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737-300/400/500MAINTENANCE MANUAL
 S 215-063
 (11)
 Make sure the indicator needle of the PASS CABIN - AIR MIX VALVE indicator moves toward COLD.

 S 865-064

 (12)
 Move the PASS CABIN temperature selector switch clockwise.

 S 215-065

 (13)
 Make sure the indicator needle of the PASS CABIN - AIR MIX VALVE indicator moves toward HOT.

 S 865-066

 (14)
 Move the PASS CABIN temperature selector switch counterclockwise until the indicator needle stays at the middle position.

 S 715-067

 (15)
 Do a test of the duct limit sensor, T416:

 (a)  
Remove the duct limit sensor but do not disconnect its electrical connector.

 (b)  
Use the heat source equipment to increase the temperature of the duct limit sensor to 140°F (60°C).

 (c)  
　
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