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Remove/install spark plugs (Engine 113) - AR15.12-P-1010GZ

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ENGINE 113.964 in MODEL 164.175 

Shown on right cylinder bank 

Fig 1: Identifying Spark Plugs Remove/Install Components (Shown On Right Cylinder Bank)
G05259890Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
REMOVINGINSTALLING Remove/install    
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) must not carry out 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 Information on preventing damage to electronic components due to electrostatic discharge All models AH54.00-P-0001-01A
NOTES Notes on avoiding damage to ignition system   AH15.10-P-0002-01D 
DANGER Risk of injury  caused by fingers being jammed or pinched  when removing, installing or aligning hoods, doors, trunk lid/ rear-end door or sliding roof. When moving components, ensure that no body parts or limbs are within the operating range of moving parts. AS00.00-Z-0011-01A
1 Open engine hood and raise to vertical position   AR88.40-P-1000GZ
2 Remove air filter housing   AR09.10-P-1150GZ
3 Remove ignition coils   AR15.12-P-2003GZ 
    TORQUE SPECIFICATION *BA15.10-P-1001-04A 
4 Pry off spark plug connector (1) over the cylinder head cover from the spark plugs (R4) IMPORTANTInstallation:  Observe the assignment markings "a" and "b" on the ignition coils and cylinder head cover when plugging on the spark plug connector (1).  
    SPECIAL TOOL Double open-ended wrench Fig 4
5 Remove spark plugs (R4) from cylinder heads TORQUE SPECIFICATION *BA15.10-P-1001-01A 
    SPECIAL TOOL Spark plug wrench Fig 2
    SPECIAL TOOL Torque wrench Fig 3
6 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 running engine Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not grasp hot or rotating parts.		 AS00.00-Z-0005-01A
7 Carry out engine test run    
IGNITION COIL

Number Designation Engines 112, 113
BA15.10-P-1001-04A Bolt for ignition coil on cylinder head cover Nm 8
SPARK PLUGS

Number Designation Engines 104, 110, 111, 113.940/941/942/943/ 944/948/960/961/962/ 963/964/965/966/967/ 968/969/971/980/981/ 982/984/986/992/993/ 995, 115, 117, 119, 120
BA15.10-P-1001-01A Spark plugs Nm 28
Fig 2: Identifying Spark Plug Wrench (112 589 01 09 00)
G05259891Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 3: Identifying Torque Wrench (001 589 51 21 00)
G05259892Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 4: Identifying Double Open-End Wrench (110 589 01 01 00)
G05259893Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
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