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Remove/install temperature sensor - AR15.60-P-3000EW

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ENGINES 272, 273 in MODEL 212 

Fig 1: Temperature Sensor Remove/Install Components
G09975121Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
DANGER Risk of death  caused by vehicle slipping or toppling off of the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
DANGER Risk of injury  to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning  caused by swallowing coolant. Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.
AS20.00-Z-0001-01A
1 Remove rear section of lower engine compartment paneling INSTALLATION IMPORTANT Prior to installation, wash spilt fuel off the engine and transmission. AR61.20-P-1105EW
2 Remove air filter housing (3).   AR09.10-P-1150EWS
3 Remove vacuum pump Vehicles with vacuum pump AR43.05-P-1320ED
4 Reduce pressure in cooling system, to do this, slowly open the cap (1) at the expansion reservoir (2) and reclose IMPORTANT Do not drain off coolant!  
5 Disconnect electrical connectors to Hall sensor (B70) and coolant temperature sensor (B11/4)    
6 Remove bolt (4) and remove clamping plate (5) TORQUE SPECIFICATION *BA15.60-P-1001-01A 
7 Fit new O-ring (6) on new coolant temperature sensor (B11/4)    
8 Pull coolant temperature sensor (B11/4) out of cylinder head and immediately insert new coolant temperature sensor (B11/4)    
9 Install in the reverse order    
10 Pour in coolant and bleed cooling system   AR20.00-P-1142EWS
TEMPERATURE SENSOR

Number Designation ENGINE 272 ENGINE 273
BA15.60-P-1001-01A Bolt, clamping plate for coolant temperature sensor to cylinder head Nm 8 8