Removal And Installation Of Cylinder Head - Mercedes-Benz Unimog 435 Service Manual

01.8
Removal and Installation of Cylinder Head
352/352 A
4.116
To Engine End No. 678 154
3 Oil threads of stud bolts and screw in.
Important! Do not pour oil into the threaded holes.
4 Fit cylinder head nuts and tighten referring to tighte-
ning diagram.
1 st lightening stage 60 Nm
2nd lightening stage 90 Nm
3rd tightening stage 110 Nm
Note: Tighten cylinder head nuts for the first time to 120
Nm at the 3rdtigthening stage.
From Engine End No. 678 155
5 Oil cylinder head bolts at the thread and at the head
contact surface and screw in,
Important! Do not pour oil into the threaded holes.
Note: Only cylinder head bolts are stocked in the spare
parts store. The cylinder head bolts can be installed in
engines with a lower engine end number.
6 Tighten cylinder head bolts according to tightening
diagram.
1 st tightening stage 60 Nm
2nd lightening stage 90 Nm
3rd lightening stage 110 Nm
Note: Tighten cylinder head bolts for the first time to
120 Nm at the 3rd lightening stage.
7 Install push rods.
8 Attach rocker arm brackets together with rocker arm
shafts and rocker arms. Turn back valve adjusting screws
and lighten rocker arm brackets.
Tightening torques see 1.4/1.