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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 Spray Nozzles (Pistons) >> Remove/Install Engine Oil Spray Nozzles (Pistons) - AR18.00-P-4000MR

Remove/Install Engine Oil Spray Nozzles (Pistons) - AR18.00-P-4000MR

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Engine 133 in model 117, 156, 176 

Engine 270 in model 117, 156, 176, 242, 246 

Engine 274 in model 172, 204, 205, 207, 212, 218, 253 

Shown on ENGINE 274 

Fig 1: Oil Spray Nozzles (Pistons) Components Location - Engine 274 In Model 253
G12935282Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Remove oil pump Engine 133 in model 117, 156, 176
Engine 270 in model 117, 156, 176, 242, 246.2
AR18.10-P-6020MT
    Engine 274 in model 172, 204, 207 AR18.10-P-6020MR
    Engine 274.9 in model 205
Engine 274.9 in model 253
AR18.10-P-6020MRA 
    Engine 274 in model 212, 218 AR18.10-P-6020MRS
2 Remove balance shaft housing Engine 270.920 in model 117, 156, 176.04, 246.24 AR03.20-P-1100MT
    Engine 274.920 in model 172, 204, 207, 212, 218 AR03.20-P-1100MR
    Engine 274.920 in model 205
Engine 274.920 in model 253
AR03.20-P-1100MRA
3 Loosen screw/bolt (1), remove oil spray nozzle (2) and close off oil feed bores with suitable stop plugs IMPORTANT To improve accessibility, turn the crankshaft slightly at the belt pulley/vibration damper if required.
INSTALLATION IMPORTANT The oil spray nozzle (2) must immerse in the cutout in the piston crown.
TORQUE SPECIFICATION Screw/bolt, oil spray nozzle to cylinder crankcase
*BA18.00-P-1001-01D 
    SPECIAL TOOL Record plug Fig 3
    SPECIAL TOOL Socket wrench bit Fig 2
4 Check oil ducts for soiling and clean if necessary IMPORTANT Blow through oil ducts in direction of flow oil with compressed air.  
5 Install in the reverse order    
ENGINE LUBRICATION, ENGINE OIL COOLING, GENERAL

Number Designation Engine 133 Engine 270
BA18.00-P-1001-01D Screw/bolt, oil spray nozzle to cylinder crankcase Nm 20 20
ENGINE LUBRICATION, ENGINE OIL COOLING, GENERAL

Number Designation Engine 274
BA18.00-P-1001-01D Screw/bolt, oil spray nozzle to cylinder crankcase Nm 20
Fig 2: Identifying Socket Wrench Bit (001 589 65 09 00)
G11971737Courtesy of MERCEDES-BENZ USA
Fig 3: Identifying Record Plug (129 589 00 91 00)
G11065549Courtesy of MERCEDES-BENZ USA