Part I: Notes

1 - 15 Nm

2 - Sealing flange

• Must be located on alignment sleeves
• Clean sealing surface before installing
• Insert with silicone sealant D 176 404 A2  (Part numbers are for reference only. Always check with your Parts Department for the latest part number information).
• Removing and installing refer to Sealing flange (belt pulley side), removing and installing 

3 - Chain tensioner with tensioning rail, 15 Nm

• Check for wear
• When installing, pretension spring and install

4 - Chain sprocket

• For oil pump drive
• Check for wear

5 - Cylinder block

• Removing and installing crankshaft refer to Crankshaft 
• Piston and connecting rod, disassembling and assembling, refer to Piston and connecting rod 

6 - Oil dipstick

• Oil level must not be above max. mark!
• Marks Markings on oil dipstick  under Lubrication system components, assembly overview 

7 - Inlet spout

• For oil dipstick
• For extracting oil

8 - Guide tube

9 - Oil spray jet

• For piston cooling

10 - Pressure relief valve, 27 Nm

• Opening pressure 1.3 to 1.6 bar positive pressure

11 - 15 Nm

12 - Suction pipe

• Clean strainer if dirty

13 - O-ring

• Replace

14 - Splash wall

15 - 15 Nm

• Loosen and tighten with T Bar and Socket 10 mm 3185
• Remove with Socket 3249

16 - Oil pan

• Clean sealing surface before installing
• Insert with silicone sealant D 176 404 A2  (Part numbers are for reference only. Always check with your Parts Department for the latest part number information).
• Removing and installing, refer to Oil pan, removing and installing 

17 - Oil drain plug, 30 Nm

• If sealing ring is leaking cut open and replace.

18 - Gasket

• Replace

19 - Oil return pipe

20 - 10 Nm

21 - Oil pump

• With pressure relief valve 12 bar
• Before installing, check to be sure both alignment bushings are present (for centering oil pump/cylinder block)
• Replace if contact surfaces and gears are scored

22 - Chain sprocket

• For oil pump
• Check for wear

23 - 25 Nm

24 - Roller chain

• Mark direction of rotation before removing
• Check for wear

25 - Alignment sleeves

• Check for secure seat