Remove/install oil pump - AR18.10-P-6020SX

ENGINE 273 in MODEL 216 

ENGINE 272, 273 in MODEL 221 

Shown on engine 273 with front sump 

Fig 1: Identifying Oil Pump Remove/Install Components - Shown On Engine 273 (1 Of 2)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Oil Pump Remove/Install Components - Shown On Engine 273 (2 Of 2)

Courtesy of MERCEDES-BENZ USA

Shown on engine 273 with front sump 

	Remove/install
1	Remove oil pan bottom section (1)	Vehicles without 4MATIC	AR01.45-P-7555SX
		Vehicles with 4MATIC	AR01.45-P-7555SW
2	Remove oil pan	Vehicles with 4MATIC and model 221.095/195
		Vehicles with 4MATIC	AR01.45-P-7500SW
		Model 221.095/195	AR01.45-P-7500SY
3	Remove electrical connector (2) at the oil level check switch (S43)	Vehicles without 4MATIC
4	Remove bolt (3a).	Vehicles without 4MATIC
			*BA18.40-P-1001-02B
			Fig 4
5	Remove bolts (3b) and remove bracket (3) with oil level check switch (S43)	Vehicles without 4MATIC
		Install new O-ring.
			*BA18.40-P-1001-02B
			Fig 4
6	Remove oil suction pipe upper section on oil pump (4)	Vehicles with 4MATIC and model 221.095/195
			*BA18.10-P-1004-01B
			Fig 3
7	Disconnect electrical connector on oil pressure switch for oil pump (4)	Model 221.095/195
8	Remove oil pump (4) from crankcase by unscrewing bolts (4a)		*BA18.10-P-1008-01B
			Fig 3
9	Press chain tensioner (6) to the back, remove oil pump chain (7) from oil pump gear (8) and take out oil pump (4) together with oil suction pipe (5)	Fill oil pump (4) with engine oil before installation so that it pumps oil immediately when it is started for the first time.
	Checking
10	Check oil pump gear (8) for easy movement and damage	Install new oil pump (4) if necessary.
11	Install in the reverse order

Fig 3: Identifying Torx Bit Set (000 589 01 10 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying External Torx Set (001 589 76 09 00)

Courtesy of MERCEDES-BENZ USA