Mercedes-Benz OM 904 LA Operating Instructions Manual page 78

Removing and fitting the cylinder head
covers
Cylinder head cover
1 Cylinder head cover
2 Hexagon socket screw
3 Sealing washer
4 Seal
5 Engine ventilation hose
Removal:
Remove engine ventilation hose 5
from cylinder head cover 1.
Unscrew hexagon socket screw 2
from cylinder head cover 1 with seal-
ing washers 3.
Remove cylinder head cover 1.
Installation:
Clean the sealing surfaces of the cylin-
der head and cylinder head cover 1.
Always replace seal 4 between cylin-
der head cover 1 and the cylinder
head.
Attach cylinder head cover 1.
Insert hexagon socket screw 2 with
new sealing washers 3 and tighten:
Tightening torque: 30 Nm.
Maintenance
Work schedules
Flywheel inspection hole
Unscrew the cap from the inspection
hole in the flywheel housing.
Fit turning tool 904 589 04 63 00 to
the flywheel housing inspection hole.
5
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