Page ENGINE - 20
Z001019/0_6_July 2008
01 ENGINE
SERVICE MANUAL MARINE ENGINES
14
Prestress timing belt by turning tensioner on hexagon
(WS 32)
counterclockwise.
Tighten hexagon so-
cket (SW 8) with torque wrench to
20 Nm +/- 2.
15
Put on tension gauge No. VR00515/0 (ill.16/pos.1)
between camshaft sprocket and tensioner. Prestress
timing belt tension by further
counterclockwise
turning of tensioner hexagon (SW 32) to
710 N +/-
30 N
for new timing belt.
NOTE:
600 N +/- 30 N
for used timing belt
ATTENTION:
When putting on tension gauge No.
VR00515/0, consider the following:
*
The two stop trunnions (ill.16/pos.2) should rest
on the forehead of timing belt and must not rest
on the back of timing belt.
*
Put measuring bow onto tooth.
*
During measuring, completely push in measuring
bow and relax quickly.
When attaining the required timing belt tension, tighten
the Allen head screw (SW 8) with torque wrench to
45 Nm +/-4,
and hold up at the same time with wrench
(SW32).
16
Tighten hexagon nut (SW 30) of camshaft sprocket
to
80 Nm +/- 4,
by holding up with special tool
2300711/0 at hexagon on camshaft.
ATTENTION:
The preset stroke at the unit injector
(3.32 mm) must not be changed when
tightening the hexagon nut. During
this operation step, camshaft
sprocket and camshaft are connected
measurement purpose. A positive
connection is only achieved by finally
tightening the hexagon nut with
240
Nm +/-12.
00.05 ill.15
00.05 ill.18
00.05 ill.16
00.05 ill.17
1
2
ToC
