Man D 2842 LE 620, Repair Manual

Page: 82 / 180

9
10
11
Removing and installing the cylinder head
80
Fig. 9
Check cylinder head bolts for max. permitted
length (see “Service Data”). Removed bolts can be
reused if the max. permitted length is not ex-
ceeded.
Before inserting the cylinder
− head bolts, apply en-
gine oil to the thread and coat the seating surface
of the bolt head with installation paste “Optimoly
White T”.
Fig. 10
Tighten the bolts according to the rotation angle
method. Observe the tightening sequence, speci-
fied tightening method, information and instructions
on the cylinder head bolts in the publication “Ser-
vice Data”.
Note:
To avoid any distortion between the cylin-
der heads and exhaust pipes, we recom-
mend proceeding as follows:
D
Place the cylinder head seals and
cylinder heads in position
D
Screw in the head bolts a few turns
D
Fit the straightedge (special tool) with
ground surface on the exhaust side;
tightening torque for mounting bolts: 20
Nm.If a straightedge is not available,
mount the exhaust manifold and tighten
to 20 Nm.
D
Tighten the cylinder head bolts as
specified
D
Remove the straightedge
D
Tighten the exhaust and intake pipes to
specified torque
Fig. 11
D
Installing intake pipe, see page 70
D
Installing exhaust pipe, see page 71
D
Installing injectors, see page 32
D
Set valve clearance, see page 82
D
Fit the cylinder head cover with a new seal
D
Fill up with coolant, see page 40