Part I

1 - Oil pump 

• With pressure relief valve (12 bar)
• Removing and installing. Refer to Oil pump, removing and installing 
• Before installing, check that the two dowel sleeves for centering oil pump/cylinder block are installed.
• Replace pump if there is scoring on moving surfaces and gear teeth.

• Tightening torque for oil pump cover to oil pump housing: 10 Nm

2 - Chain sprocket for oil pump 

• Note correct position
• Sprocket can only be fitted on oil pump shaft in one position.

3 - 25 Nm 

4 - Drive chain for oil pump 

• Mark direction of rotation before removing
• Check for wear

5 - Sealing flange 

• Apply silicone sealant D 176 404 A2 before installing. Refer to Installing 
• Replacing crankshaft oil seal on pulley end. Refer to Crankshaft oil seal (pulley end), replacing 

6 - 15 Nm 

7 - Chain tensioner 

• Tighten to 15 Nm
• Do not dismantle
• Note installation position
• Pre-tension spring and engage before installing
• If the spring is broken replace chain tensioner complete

8 - Chain sprocket 

• Removing and installing. Refer to Chain sprocket, removing and installing 

9 - Dowel sleeves 

10 - 15 Nm 

11 - Suction pipe 

• Clean strainer if soiled

12 - O ring 

• Always replace

13 - Baffle plate 

• Only install with oil pump installed

14 - 15 Nm 

15 - 15 Nm 

16 - Oil pan 

• Apply silicone sealant D 176 404 A2 when installing. Refer to Installing 

17 - Seal 

• Always replace

18 - Oil drain plug - 30 Nm