4 cylinders + 6 cylinders 4 cylinders + 6 cylinders - Steyr Motors

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01 ENGINE SERVICE MANUAL MARINE ENGINES
14 Prestress timing belt by turning tensioner on hexagon
(WS 32) counterclockwise. Tighten hexagon socket
(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
00.05 ill.15
2
1
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).
00.05 ill.16
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.
00.05 ill.17
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.18
Page ENGINE - 20 Z001019/0_6_July 2008