WÄRTSILÄ Vasa R22, Instruction Manual

Page: 169 / 297

14.2.3 Mounting of camshaft piece
1 Clean and degrease the flange connection surfaces and
the threaded holes.
2 Fit the fixing pins (4) and retainer rings with the longer
part of the pin in the bearing journal.
3 Mount the camshaft piece (1) on the fixing pin and cen-
tering at either end. Then compress the camshaft.
4 Fit the flange connection screws dry and tighten by us-
ing the tool combination in Fig 05-15B. The flange connection
screws are treated with locking compound and can be used
three times if carefully cleaned.
5 Check the valve tappets
and rollers carefully. Even
slightly damaged tappet rollers have to be changed.
6 Mount the cover (6) of the starting air distributor, the
guide blocks, injection pumps etc.
7 Check the valve clearance and fuel delivery start of the
injection pumps on all cylinders towards the free end.
14.3 Camshaft bearings
14.3.1 Inspection of the camshaft bearing
When the camshaft bearing journal has been removed, the inner
diameter of the bearing bush can be measured in situ by using a ball
anvil micrometer screw. The wear limit is stated in section 06.2 pos.
10. For visual inspection of the camshaft bearing bush, proceed as
follows:
1 Remove both camshaft covers adjacent to the bearing
concerned.
2 Remove the cover from the starting air distributor.
3 Open the flange connection camshaft piece/bearing
journal towards the driving end of the engine seen from the
bearing concerned.
4 Move the part of the camshaft located towards the free
end of the engine maximum 20 mm in the direction of the free
end by using a suitable lever.
Caution! Before moving the camshaft axially, unload the pressure of the
cams by removing the rocker arm brackets and injection
pumps.
22-9601 Valve Mechanism and Camshaft 14
VASA 22 14 - 5