Rear cylinder head, to remove (in car)
Rear cylinder head, to remove (in car) |
1. |
Drape the wing protectors over the wings and remove the engine cover.
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2. |
Disconnect the negative cable from the battery.
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3. |
Open the cap on the expansion tank and release the pressure.
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4. |
Raise the car.
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5. |
Remove the lower spoiler sections.
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6. |
Drain the coolant from the radiator.
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7. |
Insert two
83 95 238 Wedges
, between the oil sump and subframe and between the gearbox and subframe.
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8. |
Lower the car.
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9. |
Remove the mass air flow sensor with hose.
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10. |
Detach the power steering hose from the holder.
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11. |
Remove the right-hand engine attachment with bracket and engine mount.
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12. |
Undo the retaining bolts from the coolant pump pulley and power steering pump pulley
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13. |
Release the multigroove belt from tension.
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14. |
Remove the coolant pump pulley and power steering pump pulley.
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15. |
Remove the belt tensioner and generator air intake.
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16. |
Remove the timing cover.
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17. |
Unhook the throttle cable.
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18. |
Remove the vacuum hoses and unplug the pressure sensor's connector from the upper intake manifold.
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19. |
Detach the vacuum hose and the two water hoses from the throttle. Remove the turbo pressure hose with charge air bypass pipe.
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20. |
Unplug the throttle's connector and detach the venting valve hose from the underside of the throttle.
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21. |
Detach the fuel lines.
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22. |
Undo the upper intake manifold and move it aside. Unplug the connectors from the ignition discharge module and injectors.
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23. |
Remove the middle intake manifold.
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24. |
Remove the lower intake manifold. Plug the holes with paper or the like.
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25. |
Undo the coolant bridge and move it aside. Mind the gaskets.
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26. |
Remove the crankshaft pulley.
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27. |
Zero the engine. The markings on the camshaft sprockets and the timing cover must be aligned, use
Installation tool for camshaft sprockets and camshaft drive belt
KM-800-20, as must the crankshaft marking. Fit the locking tool KM-800-1 and KM-800-2 for the camshaft sprockets and locking tool KM-800-10 for the crankshaft.
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28. |
Undo the tensioning pulley and adjusting rollers. Use tool 83 94 983 as a counterstay on the adjusting rollers.
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29. |
Mark the direction of rotation on the belt. The belt can also be marked with the respective camshaft markings and crankshaft marking to facilitate refitting. Remove tool KM-800-10 from the crankshaft. Let locking tools KM-800-1 and KM-800-2 remain. Remove the lower adjusting roller. Ensure the washer behind the roller is also removed. Remove the timing belt.
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30. |
Remove the bracket with tensioning roller and the upper adjuster roller.
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31. |
Remove the ignition discharge module.
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32. |
Remove the camshaft cover. Make sure that the O-rings are in place and that they do not fall into the engine.
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33. |
Rotate the crankshaft to 60° BTDC. Note the marking.
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34. |
Remove the camshaft sprockets.
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35. |
Remove the coolant pump.
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36. |
Remove the inner timing cover.
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37. |
Detach the front exhaust pipe from the rear exhaust manifold.
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39. |
Remove the tappets with the magnetic tool part no. 83 91 401. Keep the tappets in the
83 93 787 Valve rack
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40. |
Undo the cylinder head bolts in the order shown. First slacken them a 1/4 turn and then 1/2 a turn. Remove the cylinder head. Be careful when putting it down as the intake camshaft is still in place and the valve stems could be bent accidentally.
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