Remove/install oil pump - AR18.10-P-6020GZS (ML63 AMG)

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ENGINE 156 in MODEL 164, 251

Fig 1: Identifying Oil Pump Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/install
	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 vehicle slipping or toppling off of the lifting platform.	Align vehicle between the columns of the lifting platform and position the four support plates at the lifting platform support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
1	Open engine hood	Model 164	AR88.40-P-1000GZ
		Model 251	AR88.40-P-1000RT
2	Raise vehicle with lifting platform	Model 164	AR00.60-P-1000GZ
		Model 251	AR00.60-P-1000RT
3	Remove lower engine compartment paneling	Installation: Only install the lower engine compartment paneling after the leak test.
		Model 164	AR61.20-P-1105GZ
		Model 251	AR61.20-P-1105RT
4	Remove bottom part of oil pan		AR01.45-P-7555GZS
5	Push back chain tensioner (5) and take oil pump chain (3) off oil pump gear (4)
6	Unscrew bolts (2) for oil pump (1)		*BA18.10-P-1001-01N
7	Remove oil pump (1)	Observe the following when installing: Replace seal. Fill oil pump prior to installation with engine oil so that it starts pumping oil immediately when engine is started.
8	Clean oil strainer for oil pump (1)	By removing bolts (6) and oil suction pipe (7) from oil pump (1).
			*BA18.10-P-1004-01N
	Checking
9	Check oil pump gear (4) for easy movement and damage
10	Install in the reverse order
11	Check engine oil level and adjust correctly	See: ↓
		Engine oil and filter change	AP18.00-P-0101GZ
	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 engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
12	Conduct engine test run and check the engine for leaks while it is running

OIL PUMP

Number	Designation			Engine 156
BA18.10-P-1001-01N	Fitted bolt, oil pump to crankcase		Nm	20
BA18.10-P-1004-01N	Bolt, oil suction pipe to oil pump.	M6 x 16	Nm	8.5