Subsequent Work

Pfeil  - Crankshaft/vibration balancer marking

Fig 1: Locating TDC Marking On Pulley And Housing Cover

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Fig 2: Identifying Cylinder Head Screws Tightening Sequence

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1-6  - Pistons of cylinders 1 - 6

1-20  - Tightening sequence for cylinder-head screws → Initial tightening: 15 Nm (11 ft lbs.)  → Tightening torque: 30 Nm (22 ft lbs.)  → Torque angle: 180° 

1. 2.1. Thoroughly clean all sealing faces before assembly.
2. 2.2. Cylinder head gasket must always be replaced  .
3. 2.3. Always observe tightening sequence (1-20) for cylinder-head screws -1-20-  and tighten to the specified torque.
4. 2.3.1. Tighten cylinder-head screws to an initial tightening torque of 15 Nm (11 ft lbs.).
5. 2.3.2. Tighten cylinder-head screws to 30 Nm (22 ft lbs.).
6. 2.3.3. Then tighten all cylinder-head screws a second time  to 30 Nm (22 ft lbs.).
7. 2.3.4. And finally, tighten the cylinder-head screws to a torque angle of 180°.

Fig 3: Overview Of Timing Chain

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1. Timing chain housing
2. Oval-head screw on timing chain housing → Tightening torque: 8 Nm (6 ft lbs.) 
3. Timing chain
4. Outlet camshaft controller (marking 32 A)
5. Sealing ring
6. Oil pump
7. Fastening screw on oil pump → Tightening torque: 8 Nm (6 ft lbs.) 
8. Tensioning rail
9. Chain tensioner on timing chain → Tightening torque: 40 Nm (30 ft lbs.) 
10. Sealing ring (A22 x 27), always replace 
11. Bearing pin on guide rail → Tightening torque: 10 Nm (7.5 ft lbs.) 
12. Sprocket
13. Drive wheel for timing chain
14. Hexagon-head bolt → Initial tightening: 60 Nm (44 ft lbs.)  → Torque angle: 90° 
15. Chain tensioner for drive chain
16. Drive gear wheel for drive chain
17. Drive chain
18. Guide rail for drive chain
19. Bolt for guide rail → Tightening torque: 10 Nm (7.5 ft lbs.) 
20. Fastening screw on guide rail → Tightening torque: 20 Nm (15 ft lbs.) 
21. Hexagon-head bolt on guide rail → Tightening torque: 23 Nm (17 ft lbs.) 
22. Hexagon-head bolts on camshaft controllers → Initial tightening: 60 Nm (44 ft lbs.)  → Torque angle: 90° 
23. Guide rail for timing chain
24. Drive gear wheel for high-pressure pump
25. Intake camshaft controller (marking 24 E)
26. Valve for outlet camshaft controller
27. Valve for intake camshaft controller
28. Guide rail

1. 3.1. Install chain tensioner. → WM 153619 REMOVING AND INSTALLING CHAIN TENSIONER ON V6 DFI ENGINES
2. 3.2. Install camshaft controllers. → WM 158419 REMOVING AND INSTALLING CAMSHAFT CONTROLLER ON V6 DFI ENGINES

1. 5.1. Fit lower timing-case cover.
   Fig 4: Exploded View Of Lower Timing-Case Cover

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   1. Cylinder block
   2. Vibration balancer joint flange
   3. Hexagon-head bolt on vibration balancer joint flange
   4. Straight pin, M8 x 18
   5. Lower timing-case cover
   6. Hexagon-head bolt on lower timing-case cover → Tightening torque: 10 Nm (7.5 ft lbs.) 
2. 5.2. Fit upper timing-case cover.
   Fig 5: Exploded View Of Upper Timing-Case Cover

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   1. 1 - Drive shaft
   2. 2 - Upper timing-case cover
   3. 3 - Oval-head screw → Tightening torque: 8 Nm (6 ft lbs.) 
   4. 4 - Oval-head screw on vacuum pump → Tightening torque: 8 Nm (6 ft lbs.) 
   5. 6 - Seal
   6. 7 - Sealing ring

Fig 6: Identifying Oil Pan Hexagon-Head Bolts Tightening Sequence

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1-25  - Hexagon-head bolts on oil pan → Tightening torque: 12 Nm (9 ft lbs.) 

Fig 7: Identifying Cylinder Head Cover, Gasket And Screws

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1. Cylinder head cover
2. Cylinder head gasket
3. Fastening screw on cylinder head cover → Tightening torque: 10 Nm (7.5 ft lbs.) 
4. Cover

Fig 8: Identifying Fuel Low-Pressure Line, Injection Valves And Fuel Distribution Pipe Bolts

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1. Fuel low-pressure line → Tightening torque: 22 Nm (16 ft lbs.)  → Tightening torque: 35 Nm (26 ft lbs.) 
2. Cheese head bolts on fuel distribution pipe → Initial tightening: 30 Nm (22 ft lbs.)  → Torque angle: 90° 
3. Injection valves

Fig 9: Identifying Bar Ignition Module Connectors, Engine Wire Harness And Retaining Clips

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1. Connectors for bar ignition modules
2. Retaining clips
3. Engine wire harness

1. 16.1. Clean the engine and carry out a thorough check for leaks after the test drive.