Replace spark plugs (Engine 272, 273) - AP15.10-P-1580GZC

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ENGINE 272, 273 in MODEL 164.1

ENGINE 273 in MODEL 164.8

Fig 1: Identifying Spark Plugs And Spark Plug Wrench

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install and replace
	Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, tailgates or sliding roof.	Keep body parts and limbs well clear of moving parts.	AS00.00-Z-0011-01A
	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
	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 on avoiding damage to ignition system		AH15.10-P-0002-01V
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
1	Turn key in ignition switch to position 0
2	Open engine hood
	Opening engine hood, moving to upright position and closing		AR88.40-P-1000GZ
3	Remove air filter housing
	Remove/install air filter housing		AR09.10-P-1150GZA
4	Remove ignition coils
	Remove/install ignition coils		AR15.12-P-2003GZA
	Checking
5	Check spark plug connectors, ignition coil connectors and feed lines	Check for damage, deformation and crack formation, replace if necessary.
6	Remove spark plugs (R4) with spark plug wrenches (01) from cylinder heads	Spark plug to cylinder head	*BA15.10-P-1001-01C
		Spark plug wrench	Figure
7	Install in the reverse order

SPARK PLUGS

Number	Designation		Engine 272	Engine 273
BA15.10-P-1001-01C	Spark plug on cylinder head	Nm	23	23

Fig 2: Identifying Spark Plug Wrench (112 589 01 09 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.