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Home >> Mercedes Benz >> 2019 >> C300 4Matic, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 352 (Engine Lubrication, Engine Oil Cooling - 253 Chassis) >> Testing & Repair >> Remove/Install Engine Oil Pump >> Remove/Install Engine Oil Pump - AR18.10-P-6020MRA

Remove/Install Engine Oil Pump - AR18.10-P-6020MRA

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Engine 274.9 in model 205 

Engine 274.9 in model 253 

Fig 1: Engine Oil Pump Components Location - Engine 274.9 In Model 253
G12935287Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Remove oil pan   AR01.45-P-7500MRA
2 Remove oil suction pipe (2) Vehicles without 4MATIC.
TORQUE SPECIFICATION Bolt, oil suction pipe to pipe flange/bracket
*BA18.10-P-1003-01S 
3 Release and disconnect electrical connection for engine oil pump valve (Y130)    
4 Remove screw/bolt/bolts (5) TORQUE SPECIFICATION Bolt, oil pump to crankcase *BA18.10-P-1001-01S 
5 Press clamping device for oil pump chain together, remove oil pump chain from oil pump gear and remove oil pump (1) INSTALLATION IMPORTANT
Fill oil pump (1) with engine oil before installation.
Engine damage can occur otherwise.
INSTALLATION IMPORTANT Replace seals.
 
INSPECT Check     
6 Check oil pump gear for unobstructed movement and damage In the case of a jamming or damages oil pump gear.
↓
Replace oil pump (1).
 
7 Check clamping device for oil pump chain for damage In the case of a damaged clamping device
↓
Replace clamping device.
 
8 Install in the reverse order    
OIL PUMP

Number Designation Engine 274
BA18.10-P-1001-01S Bolt, oil pump to crankcase Nm 14
OIL PUMP

Number Designation Engine 274
BA18.10-P-1003-01S Bolt, oil suction pipe to pipe flange/bracket Nm 9