(a)  
Remove the clamp that attaches the T12 sensor electrical cable to the inlet cowl bracket.

 (b)  
Install the clamp on the cable.

 (c)  
Remove the four bolts, washers, and dampers that attach the T12 sensor to the inlet cowl.

 (d)  
Remove the sensor and flange from the inlet cowl recess.

 (e)  
Align the flange on the sensor and temporarily attach the sensor to the engine mounted support bracket with the bolts, washers, and dampers from the T12 sensor.

 NOTE: Use two to four nuts to temporarily attach the sensor
____
 to the support bracket.

 S 034-004-C00
 (3)  
Remove the T2 temperature sensor from the inlet cowl as follows
 (Fig. 402):

 (a)  
Remove the clamps that attach the T2 sensor capillary tube to the inlet cowl bracket and engine flange bracket.

 (b)  
Install the clamps on the tube.

 (c)  
Remove the four bolts that attach the T2 sensor to the inlet cowl.

 (d)  
Remove the sensor from the inlet cowl recess.

 (e)  
Temporarily attach the sensor to the engine mounted support bracket with the T2 sensor bolts.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú C01 Page 402 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE B
SUPPORT PMC BRACKET SEE A
INLET
COWL

FWD CLAMP
T12 TEMPERATURE FAN CASE SENSOR
A SEE C
APPLY SEALANT HERE  T12 TEMPERATURE SENSOR  BOLT (4 LOCATIONS) WASHER (4 LOCATIONS)  T12 TEMPERATURE SENSOR INLET COWL 
DAMPER (4 LOCATIONS) 
FLANGE 
FWD 
B  C
Figure 401 T12 Temperature Sensor Installation 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE  B  SEE  A 
SENSOR T2 TEMPERATURE
(4 LOCATIONS) BOLT CLAMP  TUBE CAPILLARY  SEE  C 
INLET COWL  FWD  A  FAN CASE 
INLET COWL  SENSOR T2 TEMPERATURE  BRACKET SUPPORT  HOUSING SENSOR 
STOWAGE BOLT 
CLAMP 
FWD  B  T2 Temperature Sensor Installation Figure 402 SEALANT APPLY HERE TUBE CAPILLARY  C (3 LOCATIONS) SENSOR ATTACH POINT T2 TEMPERATURE 

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú C01 Page 404 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 034-005-C00
 (4)  Remove the thermal anti-icing (TAI) duct as follows (Fig. 403):
 (a)  
Disconnect the electrical connector from the temperature switch.

 (b)  
Disconnect the sensing line for the pressure switch from the TAI duct.

 (c)  
Remove the couplings at the aft face of the inlet cowl lip and immediately aft of the engine inlet attachment flange.

 (d)  
Remove the duct from the cowl.

 CAUTION: INSTALL A CAP ON THE PNEUMATIC DUCT AS QUICKLY AS POSSIBLE
_______ AFTER YOU REMOVE THE TAI DUCT TO PREVENT CONTAMINATION. CONTAMINATION OF THE PNEUMATIC DUCT CAN CAUSE DAMAGE TO THE EQUIPMENT.
 (e)  
Install caps on the ends of the TAI duct, pressure switch tube, and temperature switch electrical connections.
　
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