Removing and installing oil pump - AR18.10-P-6020HA

ENGINE 602.982 /983, 604, 605, 606 / 

Fig 1: Identifying Oil Pump Components

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Removing, installing
1	Remove oil pan (10)	Engines 604, 605 in model 202, engines 605, 606 in model 124	AR01.45-P-7500HA
		Engine 602.982 in model 210	AR01.45-P-7500HW
		Engines 605, 606 in model 210 Engine 606.961 in model 140	AR01.45-P-7500C
		Engine 604 in model 210	AR01.45-P-7500D
		Engines 606 in model 463 and 602.983 in model 461	AR01.45-P-7500GG
2.1	Remove oil pump drive gear (25)	On 1st version oil pump: Unscrew oil pump drive gear and pull off oil pump (24) with oil pump chain. Installation:  install oil pump drive gear (25) with the bulge facing towards the oil pump (24) (arrows).
		Engines 604, 605, 606	*BA18.10-P-1001-01A
		Engine 602.982/983	*BA18.10-N-1001-01A
	Oil pump with press-fitted oil pump drive gear		BT18.10-P-0001-01A
3	Unscrew and remove oil pump (24)	Installation:  Clean strainer of oil pump. Fill oil pump with engine oil before installing so that it pumps oil when first started. On 1st version oil pump: Pay attention to fitted sleeves (27) on the two front bolts (28). On 2nd version oil pump: Replace sealing ring (29).
		Engines 604, 605, 606	*BA18.10-P-1004-01A
		Engine 602.982/983	*BA18.10-N-1004-01A
		On 2nd version oil pump	Fig 2
4	Install in the reverse order

Oil pump

Number	Designation			Engines 604, 605, 606
BA18.10-P-1001-01A	Bolt, sprocket to oil pump		Nm	32
BA18.10-P-1004-01A	Bolt, oil pump to crankcase	Hexagon	Nm	25
		Torx	Nm	-

Oil pump

Number	Designation		Engine 602.980/982/983/984/985
BA18.10-N-1001-01A	Sprocket to oil pump	Nm	32
BA18.10-N-1004-01A	Oil pump to crankcase	Nm	25

Fig 2: Torx Bit Set (000 589 01 10 00)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.