Removing the Cylinder Head

Removing the cylinder head

Note! The illustrations in this service information are used for different model years and / or models. Therefore there may be some variation. However, the essential information in the illustrations is always correct.

Removing the camshaft variable valve timing unit / timing belt pulley





Camshafts with variable valve timing

Install tool 999 5452 CAMSHAFT ADJUSTMENT TOOL 999 5452 Camshaft Adjustment Tool at the rear of the camshafts.
Remove the plug at the front edge of the variable valve timing unit (Tx 55).
Remove the center screw from the variable valve timing unit (Tx 55).
Carefully pull out the camshaft pulley with the variable valve timing unit.

Camshafts without variable valve timing

Remove the screws.
Pull off the camshaft pulley.
Remove tool 999 5452.
Remove the inner timing cover.

Caution! The camshafts must not be turned when the timing belt has been removed.

Removing the camshaft cover




Remove the control valve from the variable valve timing unit.
Remove the spark plugs from cylinders 2 and 5.
Install 2 tools . Leave a 2-3 mm gap to the camshaft cover. Ensure that the screw in the spark plug well is tightened as far as it will go.
Remove all the screws securing the camshaft cover to the cylinder head.





Remove
- camshaft cover with pliers 999 5670 Pliers 999 5670 Pliers at the stop lugs.
Start at cylinder 1 and work alternately backwards
- the wing nuts approximately 2 turns.
Repeat the procedure with the pliers.

Remove
- tool 999 5454
- the camshaft seals at both the front and rear edges
- the camshaft cover
- the camshafts. Work loose and lift at the same time.

Note! Take care not to damage the thrust washers.

Removing the cylinder head




Remove the pipe screws for the coolant heated crankcase ventilation at the rear edge of the cylinder head (applies only to B6284T).
Slacken off the screwed joint for the cylinder head. Start at the sides and work alternately towards the center.
Lift out the cylinder head.

Note! Take care not to damage the mating surfaces.