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Remove/install front cover on cylinder head - AR01.30-P-5700EWR

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ENGINES 272, 273 in MODEL 212 

Front cover at right cylinder head 

Fig 1: Front Cover On Cylinder Head Remove/Install Components (1 Of 2)
G09973817Courtesy of MERCEDES-BENZ USA
Fig 2: Front Cover On Cylinder Head Remove/Install Components (2 Of 2)
G09973818Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
1 Turn key in ignition lock to position "0"    
2 Remove bottom engine compartment paneling   AR61.20-P-1105EW
3 Remove front engine cover IMPORTANT Pull the front engine cover upward and out of the mountings.  
4 Remove right engine intake air duct See "Remove air filter housing". AR09.10-P-1150EWS
5 Remove air shutoff valve (1) at the right cylinder head Except model 212.057 AR14.30-P-7200EW
6 Remove bolts (2a) and set bracket (2) for front engine cover with air pump switchover valve (Y32) to one side Except model 212.057  
    IMPORTANT Do not detach lines at the air pump switchover valve (Y32).  
    TORQUE SPECIFICATION *BA01.30-P-1009-01O 
7 Remove hose (3) Except model 212.057  
8 Remove bolts (5) and place low-temperature circuit shutoff valve (Y125) to one side with lines connected Model 212.057  
    TORQUE SPECIFICATION *BA01.30-P-1019-01O 
9 Remove bolts (6a), loosen bolt (6b) and swivel holder to the side Model 212.057  
    TORQUE SPECIFICATION *BA01.30-P-1018-01O 
10 Disconnect electrical connectors on right intake camshaft solenoid (Y49/5) and right exhaust camshaft solenoid (Y49/7)    
11 Disconnect electrical connectors on right intake camshaft Hall sensor (B6/5) and right exhaust camshaft Hall sensor (B6/7)    
12 Remove bolts (4a, 7 pieces) from front cover (4) INSTALLATION NOTES Check seating of the seal for the oil dipstick guide tube in the oil pan to avoid oil leakage.  
    TORQUE SPECIFICATION *BA01.30-P-1006-01O 
    TORQUE SPECIFICATION *BA01.45-P-1006-01M 
13 Carefully loosen front cover (4) on lifting lugs (4b) and detach from the front IMPORTANT Pay attention to fitted sleeves in area of outer threaded connections (arrows).
INSTALLATION IMPORTANT Apply sealant to front cover (4).		  
IMPORTANT Notes on sealant path for front cover to cylinder head   AH01.30-P-1000-02V
    SPECIAL TOOL Figure
    Loctite sealant 5970 *BR00.45-Z-1013-01A 
CLEANING Clean     
14 Clean sealing surfaces on front cover (4), on cylinder head cover and on cylinder head NOTES Do not use any sharp-edged tools or abrasive paper as this will damage the sealing surfaces. AR01.00-P-0050-01A
    Loctite 7200 *BR00.45-Z-1038-04A 
    Cleaning spray, Loctite 7063 (150ml) *BR00.45-Z-1046-04A 
15 Detach right intake camshaft Hall sensor (B6/5) and right exhaust camshaft Hall sensor (B6/7) from front cover (4) When replacing the front cover (4)  
    TORQUE SPECIFICATION *BA15.10-P-1002-03E 
16 Detach right intake camshaft solenoid (Y49/5) and right exhaust camshaft solenoid (Y49/7) from front cover (4) When replacing the front cover (4)  
    TORQUE SPECIFICATION *BA15.10-P-1003-03E 
17 Install in the reverse order    
INSPECT Checking     
DANGER Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.		 AS00.00-Z-0005-01A
18 Conduct engine test run and check engine for leaks    
CYLINDER HEAD

Number Designation Engine 272 Engine 273
BA01.30-P-1006-01O Bolt, front cover to cylinder head M6 Nm 9 9
BA01.30-P-1009-01O Bolt, switchover valve bracket to cylinder head M6 Nm 9 9
BA01.30-P-1018-01O Bolt, NT circuit coolant line bracket to cylinder head or cylinder head front cover Nm 9 -
BA01.30-P-1019-01O Bolt, shutoff valve bracket to cylinder head Nm 9 -
OIL PAN

Number Designation Engine 272 Engine 273
BA01.45-P-1006-01M Mounting bolt for oil dipstick guide tube Nm 9 9
POSITION SENSOR

Number Designation Engine 272 Engine 273
BA15.10-P-1002-03E Bolt, camshaft Hall sensor to front cover on cylinder head Nm 8 8
BA15.10-P-1003-03E Bolt, camshaft solenoid to front cover to cylinder head Nm 8 8
Fig 3: Identifying Squeeze Gun (112 589 00 25 00)
G09973819Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1013-01A Loctite sealant 5970 A 003 989 98 20
BR00.45-Z-1038-04A Loctite 7200 Henkel Loctite Deutschland GmbH
BR00.45-Z-1046-04A Cleaning spray, Loctite 7063 (150ml) A 001 986 71 71 10
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