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Replace spark plugs - AP15.10-P-1580CMG

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ENGINE 156 IN MODEL 204, 212 

Shown on engine 156 in model 211 

Fig 1: Removing Spark Plug - Shown On Engine 156
G10037820Courtesy of MERCEDES-BENZ USA

Shown on ignition coil in engine 157.980 

Fig 2: Identifying Rubber Lip And Spark Plug Connector
G10037821Courtesy of MERCEDES-BENZ USA
DANGER Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects. Wear protective gloves, protective clothing and safety glasses, if necessary. AS00.00-Z-0002-01A
DANGER Risk of death  caused by contact with parts conducting high voltages. Do not touch parts which conduct high voltages. Persons who have electronic implants (e.g. cardiac pacemakers) may not perform any work on the ignition system. AS15.10-Z-0001-01A
NOTES Information on avoiding damage when replacing spark plugs   AH15.10-P-0002-02A
  Preparatory activity     
1 Open engine hood and raise to vertical position Model 204, 212  
REFER TO TESTING & REPAIR Model 204.3, 212
IMPORTANT Model 204.3, 212 with code U60 (Active engine hood (pedestrian protection))
Moving the engine hood to the vertical position: 
Detach left and right clamping levers at the upper left and right hinges.		 AR88.40-P-1000EW
REMOVING Remove     
2 Remove ignition coils    
REFER TO TESTING & REPAIR     AR15.12-P-2003CMG
CLEANING Clean     
3 Blow out any dirt residue in the spark-plug recesses using compressed air SPECIAL TOOL Record plug Fig 4
SPECIAL TOOL Set of protective covers Fig 3
REMOVING Remove     
4 Remove spark plugs (1) using spark plug wrench (01) from cylinder heads SPECIAL TOOL Spark plug wrench Fig 5
INSTALLING Install     
5 Screw new spark plugs (1) using spark plug wrench (01) into cylinder heads TORQUE SPECIFICATION Engine 156 Spark plug to cylinder head *BA15.10-P-1001-01H 
SPECIAL TOOL Spark plug wrench Fig 5
INSPECT Check     
6 Check spark plug connector (2), ignition coils and ignition lines for damage, deformation and crack formation If there are problems:
↓
Rectify problem subject to separate repair order.		  
INSTALLING Install     
7 Grease rubber lips (3) of spark plug connectors (2) using spark plug connector grease before installation Spark plug connector grease *BR00.45-Z-1102-06A 
8 Install ignition coils    
REFER TO TESTING & REPAIR     AR15.12-P-2003CMG
  Finishing activity     
9 Close engine hood Model 204, 212  
REFER TO TESTING & REPAIR Model 204.3, 212
IMPORTANT Model 204.3, 212 with code U60 (Active engine hood (pedestrian protection))
Close engine hood: 
Mount left and right clamping levers at the upper left and right hinges.		 AR88.40-P-1000EW
SPARK PLUGS

Number Designation ENGINE 156, 159
BA15.10-P-1001-01H Spark plug to cylinder head Nm 22
Fig 3: Identifying Set Of Protective Covers (001 589 01 91 00)
G10037822Courtesy of MERCEDES-BENZ USA
Fig 4: Identifying Record Plug (129 589 00 91 00)
G10037823Courtesy of MERCEDES-BENZ USA
Fig 5: Identifying Spark Plug Wrench (112 589 01 09 00)
G10037824Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1102-06A Spark plug connector grease A 002 989 80 51
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