STEYR MOTORS Marine Engine 2012 Series, Service Manual

Page: 91 / 274

Engine
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27. Remove camshaft sprocket from conical
seat by one hammer blow on puller screw.
NOTE:
To correct the setting of engine timing,
follow further instructions as per item 32.
Readjustment of camshaft position in case
of correction of set engine timing
NOTE:
This is to be carried out, if the index
value of the engine timing is not within the
allowed adjustment tolerance.
28. Check locking position of crankshaft or lock
crank shaft, if necessary. (piston; cylinder 1;
in TDC); Refer 01.00.01
29. Adjust camshaft to 3.25 mm on the dial
gauge, by turning with special tool
2300711/0 (ill.30) (plunger guide at unit
injector is moved down by 3,59 mm.)
NOTE:
During this operation, the camshaft
sprocket must be released from the taper
connection and should only be slightly
supported by the cone. Tension of timing belt
remains adjusted, as described before.
30. Remove locking pin from crankshaft. Refer
01.00.01
31. 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:
During this operation, camshaft
sprocket and camshaft are
connected measurement
purpose. A positive connection
is only achieved by finally
tightening the hexagon nut with
240 Nm +/-12.
The previously
set stroke on the plunger guide
must not be changed when
tightening the hexagon nut.
32. Turn crankshaft by 2 further turns, and at the
second turn fix crankshaft in TDC position