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Replacing the cylinder head cover gasket on a BMW 5 Series

Written By: proslaam (and 2 other contributors)
  • Comments: 8
  • Favorites: 1
  • Completions: 8

Difficulty

Difficult

Steps

13

Time Required

01:00:00 - 04:00:00

Sections

1

Flags

1

Ce tutoriel a été créé par la communauté

Ce tutoriel a été créé par la communauté

User contributed

Introduction

Changing the cylinder head cover gasket on 520i E39

  1. To remove the 2 large engine covers, remove the small screw covers using a flat screwdriver Unscrew the screws holding the right cover in place (10 socket) Remove the cover

    • To remove the 2 large engine covers, remove the small screw covers using a flat screwdriver

    • Unscrew the screws holding the right cover in place (10 socket)

    • Remove the cover

    Edit

  2. Unscrew the left cover bolts (10 socket) Remove the oil filler cap before removing the cover

    • Unscrew the left cover bolts (10 socket)

    • Remove the oil filler cap before removing the cover

    • The reels are now accessible

    • Replace the oil filler cap to prevent dirt from falling into the engine

    Edit

  3. To disconnect a coil, insert a flat screwdriver into its metal attachment, and lever upwards Repeat the operation on the other coils Repeat the operation on the other coils

    • To disconnect a coil, insert a flat screwdriver into its metal attachment, and lever upwards

    • Repeat the operation on the other coils

    Edit

  4. Remove the electrical plugs from the ignition coils Remove the electrical plugs from the ignition coils

    • Remove the electrical plugs from the ignition coils

    Edit

  5. Unscrew the ground braid (8 mm socket) Unclip the box containing the electrical harnesses of the coils Move the case aside

    • Unscrew the ground braid (8 mm socket)

    • Unclip the box containing the electrical harnesses of the coils

    • Move the case aside

    Edit

  6. Unscrew the ignition coil bolts (10mm socket) Remove the ground braids, to do this remove their bolt (8 mm socket) Remove the 6 coils and note their location on the cylinders

    • Unscrew the ignition coil bolts (10mm socket)

    • Remove the ground braids, to do this remove their bolt (8 mm socket)

    • Remove the 6 coils and note their location on the cylinders

    Edit

  7. Unclip the electrical cables from the lambda probes Move the electrical cables away from their location (lower left in photo 2) Move the electrical cables away from their location (lower left in photo 2)

    • Unclip the electrical cables from the lambda probes

    • Move the electrical cables away from their location (lower left in photo 2)

    Edit

  8. Remove the engine degassing hose, to do this press on the plastic contour of the pipe and remove it at the same time Remove the engine degassing hose, to do this press on the plastic contour of the pipe and remove it at the same time Remove the engine degassing hose, to do this press on the plastic contour of the pipe and remove it at the same time

    • Remove the engine degassing hose, to do this press on the plastic contour of the pipe and remove it at the same time

    Edit

  9. Unscrew the 15 bolts holding the cylinder head cover in place. The cylinder head cover could remain stuck, use a spatula to facilitate its removal Remove the cylinder head cover

    • Unscrew the 15 bolts holding the cylinder head cover in place.

    • The cylinder head cover could remain stuck, use a spatula to facilitate its removal

    • Remove the cylinder head cover

    • Gradually collect the washers and gaskets from the 15 cylinder head cover screws; sometimes they remain stuck on it and come off when handling the cylinder head cover.

    Edit

  10. Remove the gaskets stuck to the spark plug wells. The gaskets can be brittle, be careful not to drop pieces into the spark plug wells! Remove the cylinder head cover gasket

    • Remove the gaskets stuck to the spark plug wells.

    • The gaskets can be brittle, be careful not to drop pieces into the spark plug wells!

    • Remove the cylinder head cover gasket

    • Clean the slots in the cylinder head cover

    Edit

  11. Insert the new gaskets into their slot Insert the new gaskets into their slot Insert the new gaskets into their slot

    • Insert the new gaskets into their slot

    Edit

  12. Clean the surfaces in contact with the seal Put joint compound on the 2 joints of the Vanos and the junction towards the half-moons Apply some gasket paste to the junction towards the half-moons of the cylinder head at the rear.

    • Clean the surfaces in contact with the seal

    • Put joint compound on the 2 joints of the Vanos and the junction towards the half-moons

    • Apply some gasket paste to the junction towards the half-moons of the cylinder head at the rear.

    Edit

  13. Carefully replace the cylinder head cover, ensuring that the gasket remains in place.

    • Carefully replace the cylinder head cover, ensuring that the gasket remains in place.

    • Insert the screws and tighten them crosswise, from the inside to the outside.

    • Reassemble the remaining parts in the reverse order of removal.

    • Check for oil seepage after driving a few kilometers.

    Edit
Finish Line

8 other people completed this guide.

Author

with 2 other contributors

proslaam

Member since: 02/25/2017

1,395 Reputation

10 Guides authored

6 Comments

Do not forget the tightening torque if the joint is not deformed.

ion laurentiu istodor - Resolved on Release Reply

Good morning,

I have a M54B30 on an X3. I probably have a slight leak at the cylinder head cover gasket because sometimes I have a smell of burnt engine oil coming up into the cabin and the heat shield of the manifold gasket is burnt black. I would like to know if anyone has any idea for the tightening torque of the cylinder head cover screws?

hamza sakat - Resolved on Release Reply

Hi, this is a classic on this engine. You should not tighten the screws too much, I think the tightening torque is 10-15 Nm if I remember correctly, to be checked. The screws must be tightened crosswise; from the inside to the outside

proslaam -

Thank you. Missing the 15nm tightening torque.

fabrice gascon - Resolved on Release Reply

Very well done tutorial. Thank you

laurent cauliez - Resolved on Release Reply

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