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Remove/install exhaust gas recirculation positioner - AR14.20-P-1020GZB

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ENGINE 642 in MODEL 164, 251 

ENGINE 642 in MODEL 207, 212, 218 without CODE 927 (EU6 emissions standard) 

MODIFICATION NOTES

26.9.14 coolant mixing ratio   BF20.00-P-1001-04A

Shown on model 211 

Fig 1: Exhaust Gas Recirculation Positioner Remove/Install Components
G09974997Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
DANGER Risk of injury  to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning  from 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
NOTES Notes on coolant   AH20.00-N-2080-01A
1 Removes strut tower brace MODEL 164.8  
      AR62.30-P-2500GY
    IMPORTANT Remove strut tower brace from strut tower mounts.  
2 Remove partition wall between wheel wells MODEL 251  
      AR62.30-P-2400RT
3 Remove engine cover MODEL 164, 207, 212, 218, 251  
    MODEL 164 AR01.10-P-2405GZB
    MODEL 251
INSTALLATION IMPORTANT Ensure correct seating of the engine cover.
AR01.10-P-2405RTB
4 Remove left-hand air filter housing Model 251 with coolant cooled exhaust gas recirculation actuator (Y27/9) AR09.10-P-1150RTB
    MODEL 164.1/8 AR09.10-P-1150GZB
5 Carefully open cap for the coolant system For a water-cooled exhaust gas recirculation actuator (Y27/9)  
6 Remove coolant hose on exhaust gas recirculation actuator (Y27/9) For a water-cooled exhaust gas recirculation actuator (Y27/9)
IMPORTANT Collect flowing out coolant in a suitable container.
 
7 Disconnect electrical connection on left exhaust gas recirculation actuator (Y27/9)    
8 Remove screw/bolt (1) TORQUE SPECIFICATION Bolt, exhaust gas recirculation positioner to charge air distribution line *BA14.20-P-1002-01G 
9 Remove left exhaust gas recirculation actuator (Y27/9) upwards    
10 Install in the reverse order    
11 Reset lambda values with diagnostic system When replacing the exhaust gas recirculation actuator (Y27/9)  
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-04A
12 Pour coolant into expansion reservoir    
IMPORTANT Notes on coolant level   AH20.00-P-1142-01TI
    IMPORTANT Notes on coolant level  
    FLUID SPECIFICATION Coolant mixing ratio *BF20.00-P-1001-04A 
13 ENGINE TEST RUN IMPORTANT The cooling system is ventilated during the engine test run.  
14 Correct coolant level in the expansion reservoir and check cooling system for leaktightness MODEL 164, 251 AR20.00-P-1010GZB
    MODEL 207 AR20.00-P-1010CW
    MODEL 212, 218 AR20.00-P-1010OMA
EXHAUST GAS RECIRCULATION

Number Designation ENGINE 642.82/83/85/86/87/886/9
BA14.20-P-1002-01G Bolt, exhaust gas recirculation positioner to charge air distribution line Nm 12
COOLANT MIXING RATIO

Number Designation ENGINE ALL
BF20.00-P-1001-04A Coolant mixing ratio Antifreeze/water up to -37°C 50/50
Antifreeze/water up to -45°C 55/45
Specification Coolant (Specification 310.1). See https://bevo.mercedes-benz.com/index.php?language_id=1
Specification Anticorrosion/antifreeze agents (Specification 325.0). See https://bevo.mercedes-benz.com/index.php?language_id=1