Man D 2842 LE 620, Repair Manual

Page: 84 / 180

1
2
3
4
Setting the valve clearance
82
Adjust the valves only when engine is cold (max.
coolant temperature 50
° C).
Fig. 1
Remove the cylinder head covers.
Caution:
Here, oil residues can escape.
Old oil is hazardous waste.
Observe safety instructions for the preven-
tion of environmental damage.
Fig. 2
Turn the engine using the barring gear until the
piston of the cylinder to be set is at ignition TDC
and the rocker arms are relieved of load.
The valves of the synchronised cylinder are then
on overlap.
Fig. 3
D 2842 LE 620
Valves overlap in cylinder
1 12 5 8 3 10 6 7 2 11 4 9
6 7 2 11 4 9 1 12 5 8 3 10
Adjust valves in cylinder
Valve clearance:
Intake: 0.5 mm
Exhaust: 0.6 mm
Fig. 4
D
Slide the feeler gauge between the valve bridge
and the rocker arm
D
Loosen lock nut and turn adjusting screw with
screwdriver until feeler gauge can be moved
with slight resistance
D
Tighten the lock nut
Tightening torque: 40 Nm
D
Check the clearance once again
D
Fit the cylinder head covers:
Screw in the bolts by hand and then tighten
2
5
8
9
10
3
4
6
7
1
11
12