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Remove/install ignition coils - AR15.12-P-2003W

ENGINES 276 in MODEL 172 

Fig 1: Identifying Ignition Coils Remove/Install Components
G10247856Courtesy of MERCEDES-BENZ USA
MODIFICATION NOTES

24.11.11 Repair method has been revised    
REMOVINGINSTALLING Remove/install     
DANGER Risk of injury  caused by fingers being pinched or crushed  when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof Keep body parts and limbs well clear of moving parts. AS00.00-Z-0011-01A
DANGER Risk of death  caused by contact with parts conducting high voltages. Do not touch parts which conduct high voltages. Persons who wear electronic implants (e.g. heart pacemakers) should never perform any work on the ignition system AS15.10-Z-0001-01A
DANGER Risk of injury  to skin and eyes caused by handling hot or glowing objects. Wear safety gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
NOTES Notes on avoiding damage to ignition system   AH15.10-P-0002-01V
    IMPORTANT The ignition coils (T1/1 to T1/6) and spark plug connector (a) create a unit and can therefore only be removed and replaced together.  
1 Switch off ignition    
2 Remove front engine cover (1)    
3 Remove air filter housing (2). TORQUE SPECIFICATION *BA09.10-P-1001-01M 
TORQUE SPECIFICATION *BA09.10-P-1002-01M 
4 Detach vacuum reservoir from bracket for ME-SFI [ME] control unit If necessary  
5 Disconnect connector (4) from ignition coils (T1/1 to T1/6)    
6 Remove bolts (5) of ignition coils (T1/1 to T1/6) TORQUE SPECIFICATION *BA15.10-P-1001-04A 
7 Pull ignition coils (T1/1 up to T1/6) with spark plug connectors (a) upwards and out    
INSPECT Checking     
8 Check ignition coils (T1/1 up to T1/6) and spark plug connectors (a) for damage and replace if necessary    
9 Install in the reverse order    
10 Read out fault memory with STAR DIAGNOSIS and erase if necessary   AD00.00-P-2000-04A
IGNITION COIL

Number Designation Engine 276
BA15.10-P-1001-04A Bolt, ignition coil to cylinder head cover Nm 9
AIR FILTER

Number Designation Engine 276
BA09.10-P-1001-01M Bolt, air filter to cylinder head cover Nm 9
BA09.10-P-1002-01M Bolt, air filter to air intake pipe support brace Nm 9