Man D 2840 LE 301, Repair Manual

Page: 96 / 194

5
6
7
8
Removing and installing cylinder head
94
Fig. 5
Remove cylinder head bolts in reverse order of
tightening.
Note:
Use reinforced socket (screw-driving ma-
chine) to loosen and tighten the cylinder
head bolts.
On engines recently manufactured Torx
bolts are used for which an E20
−
½
”
wrench is required.
Fig. 6
Remove the mounting bolts from the intake and
exhaust pipes for the respective cylinder head.
Loosen all mounting bolts of intake manifold and
exhaust pipe.
This will reduce the tension on the cylinder head,
and the head can be taken off more easily.
Fig. 7
Take off cylinder head and cylinder head gasket.
Note:
If within the context of an engine overhaul
all cylinder heads of a bank are removed,
check the sealing faces of the cylinder
heads and of the cylinder block with a
straight edge to see whether they are
plane.
Cylinder heads which are not plane may
be remilled by 1 mm. Observe specified
nozzle protrusion and valve retrusion (see
”Engineering
S
Data and
S
Setting values”).
Check the cylinder heads for cracks.