WÄRTSILÄ Vasa R22, Instruction Manual

Page: 136 / 297

11.3.1 Removal of balancing shaft bearing bushes
1 Turn the engine into a position where the balancing shaft
eccentrics point downwards.
2 Loosen the screws (6) , from the shaft the bearings of
which is to be removed.
3 Loosen the screws (7) and remove the upper bearing
shells (8).
4 Lift up the balancing shaft (9) by the crane. The bearings
comes out with the shaft and You can take them away.
5 Move the shaft to the direction of the free end and let
the shaft down
6 Loosen the fastening screws (12) of the cover (11).
7 Remove a locking wire (14)and loosen the fastening screws
(10) of the axial washer (13) at the free end of the shaft.
8 Remove the shaft piece (3).
9 Lift the removing device 834001 inside the bearing
and tighten the nut of the pulling screw.
10 Connect the hoses of the hydraulic pump to the hydrau-
lic tool.
11 Pump pressure into the hydraulic tool to remove the
bearing bush. Pressure must not exceed the value stated in the
chapter 07. If the bearing bush is still sticking when the stated
pressure is achieved, it may be necessary to knock at the
opposite end of the shaft.
12 Open the pump valve, disconnect the hoses of the hy-
draulic tool and lift out the removing tool and bearing bush.
11.3.2 Installing balancing shaft bearing bushes
1 Oil the bearing bushes surfaces lightly with clean en-
gine oil.
2 Lift the mounting device 834001 with the bearing bush
to the place where the bearing is to be mounted and tighten
the nut of the pulling screw.
3 Connect the hoses
of the hydraulic pump to the hydrau-
lic tool.
4 Pump pressure into the hydraulic tool install the bearing
bush. Pressure must not exceed the value stated in the chapter
07.
5 Open the pump valve, disconnect the hoses of the hy-
draulic tool and lift out the hydraulic tool.
11 Crank Mechanism 22-9601
11 - 10 VASA 22