STEYR MOTORS Marine Engine 2012 Series, Service Manual

Page: 79 / 274

Engine
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24. Put on tension gauge No. VR00515/0
between camshaft sprocket and tensioner,
as described, and read measured value.
Timing belt tension should be
600 N +/- 30 N
for a new timing belt.
NOTE:
If timing belt tension does not
correspond to specified tension, loosen
tensioner and repeat adjustment according to
instructions under item 22 through 25. In this
case, a re-positioning of the camshaft sprocket
may be required.
25. Turn crankshaft further 2 turns, and at
second turn fix crankshaft with locking pin in
TDC position (cylinder 1; in TDC). See
chapter 01.00.01. With crank shaft in locked
position, the plunger guide stroke of the unit
injector at first cylinder should show the
following value on the dial gauge:
Index value of engine timing
3,59 mm +/- 0,04 mm
(plunger guide stroke - unit injector)
NOTE:
If the index value of engine timing
should not correspond to the specifically value,
follow the instructions as per item 27.
Remove camshaft sprocket
26. Loosen hexagon nut of camshaft sprocket
SW 30 by holding up with special tool No.
2300711/0 and turn nut by approx. 1/4
rotation.
27. Mount extractor (ill.27/pos.1) camshaft
sprocket VR00113/0 and screw in puller
screw
"LEFTHAND THREAD"
by hand.
Pre-stress puller screw with approx.
100 Nm +/-5.
NOTE:
Do not remove camshaft sprocket from
conical seat when screwing in the puller screw.