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

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ENGINES 272 in MODEL 204 

ENGINES 272, 273 in MODEL 207 

Fig 1: Identifying Oil Pump Components
G07674910Courtesy of MERCEDES-BENZ USA
MODIFICATION NOTES

2.6.08 Special tool outer Torx set and Torx bit set - added Operation steps 2, 3
REMOVINGINSTALLING Remove/install     
NOTES Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A 
1 Remove oil pan Vehicles without 4MATIC except engine 272.982/ 984/ 991 AR01.45-P-7500CV
Vehicles with 4MATIC and vehicles with engine 272.991 AR01.45-P-7500CWX
Vehicles with engine 272.982/ 984 AR01.45-P-7500CDE
2 Remove bolts (1a) and oil suction pipe (1) IMPORTANTInstallation  : Install new sealing ring (1b).  
TORQUE SPECIFICATION *BA18.10-P-1004-01B 
TORQUE SPECIFICATION *BA18.10-P-1005-01B 
SPECIAL TOOL Fig 3
3 Remove bolts (2a) TORQUE SPECIFICATION *BA18.10-P-1008-01B 
SPECIAL TOOL Fig 2
4 Press back chain tensioner (3) (arrow), remove oil pump chain (4) from oil pump gear (5) and remove oil pump (2) IMPORTANTInstallation  : Fill oil pump (2) with engine oil before installation so that it pumps oil immediately when it is started for the first time.  
INSPECT Checking     
5 Check oil pump gear (5) for damage Install new oil pump (2) if necessary.  
6 Install in the reverse order    
DANGER 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
7 Conduct engine test run and check engine for leaks
OIL PUMP

Number Designation Engine 272 Engine 273
BA18.10-P-1004-01B Bolt, oil suction pipe to oil pump. M6X16 Nm 9 9
BA18.10-P-1005-01B Oil suction pipe at crankcase Nm 9 9
BA18.10-P-1008-01B Bolt, oil pump to crankcase Stage 1 Nm 5 5
Stage 2 Nm 20 20
Fig 2: Identifying Torx Bit Set (000 589 01 10 00)
G07674911Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying External Torx Set (001 589 76 09 00)
G07674912Courtesy of MERCEDES-BENZ USA