Remove/install oil spray nozzles (pistons) - AR18.00-P-4000QB (ML350, ML550, GL450, GL550)

WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2012 Mercedes-Benz GL550, 2012 Mercedes-Benz GL450, 2011 Mercedes-Benz ML63, 2011 Mercedes-Benz ML550, and 2011 Mercedes-Benz ML350. However, it is still accessible from the selected car via links, so may be relevant.

ENGINE 272

ENGINE 273

Fig 1: Identifying Oil Spray Nozzles And Injection Pipe - Engine 272 And 273

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
	Risk of death caused by vehicle slipping or toppling off the lifting platform.	Align vehicle between the columns of the and position the four support plates below the lifting platform support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
1	Remove oil pan
2	Remove the oil suction pipe from the oil pump	Bolt for oil intake tube on oil pump	*BA18.10-P-1004-01B
		Oil suction pipe to crankcase	*BA18.10-P-1005-01B
3	Remove the oil baffle from the crankcase		*BA18.10-P-1006-01B
4	Remove oil spray nozzles (1)	To improve accessibility, turn the crankshaft slightly at the belt pulley if required. Installation: Ensure that the injection pipes (2) of the oil spray nozzles (1) are not bent.
			*BA18.00-P-1001-01D
	Clean
5	Inspect/clean oil ducts	Blow through oil ducts in direction of flow oil with compressed air. Do not use any hard objects for cleaning.
6	Install in the reverse order

OIL PUMP

Number	Designation			Engine 272	Engine 273
BA18.10-P-1004-01B	Bolt, oil suction pipe to oil pump.	M6 x 16	Nm	9	9
BA18.10-P-1005-01B	Oil suction pipe to crankcase		Nm	9	9
BA18.10-P-1006-01B	Bolt, oil baffle to crankcase		Nm	9	9

ENGINE LUBRICATION, ENGINE OIL COOLING, GENERAL

Number	Designation		Engine 272	Engine 273
BA18.00-P-1001-01D	Bolt, oil-spray nozzle to crankcase	Nm	8	8