Remove/install oil pump - AR18.10-P-6020GZ (ML500)

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ENGINE 113.964 in MODEL 164.175

Fig 1: Identifying Oil Pump Remove/Install Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Remove/Install
	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
	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 below the hoist support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
2	Raise vehicle with lifting platform		AR00.60-P-1000GZ
3	Remove bottom part of oil pan		AR01.45-P-7555GZ
4	Push back chain tensioner (5) and take oil pump chain (3) off oil pump gear (4)
5	Unscrew bolts (2) of the oil pump (1)		*BA18.10-P-1001-01B
6	Remove oil pump (1)	Installation: Before installing, fill oil pump (1) with engine oil, so that it delivers oil immediately when first started.
7	Clean strainer of oil pump (1)	To do this, unscrew bolts (7) and take cover and oil pipe (8) off the oil pump (1).
			*BA18.10-P-1003-01B
	Check
8	Check oil return shutoff valve (6) for correct position and function.	If the oil return shutoff valve (6) is damaged or a malfunction detected, it must be replaced.
9	Install in the reverse order
10	Check engine oil level and correct if required.
	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 engine	Secure vehicle to prevent it from moving. Wear closed and snug-fitting work clothes. Do not grasp hot or rotating parts.	AS00.00-Z-0005-01A
11	Conduct engine test run and check the engine for leaks while it is running	In the event of oil loss determine and eliminate cause, otherwise malfunctions, transmission damage, and serious environmental pollution may occur.

OIL PUMP

Number	Designation			Engine 113.964/971
BA18.10-P-1001-01B	Bolt of oil pump to crankcase	M8 x 30	Nm	20
		M7 x 40	Nm	-
		M6 x 16	Nm	-
BA18.10-P-1003-01B	Screw of oil pump cover with oil pipe to oil pump		Nm	10