WÄRTSILÄ Vasa R22, Instruction Manual

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22.4 Speed governor
22.4.1 General
The engine can be equipped with various governor alternatives
depending on the kind of application. Concerning the governor in
itself, see the governor instruction book.
22.4.2 Hydraulic governor drive
The governor is driven by a separate drive unit which, in turn, is
driven by the camshaft through helical gears. The governor is
fastened to this drive unit and connected to the drive shaft through
a serrated connection. The governor with drive can thus be removed
and mounted as a unit or the governor can be changed without
removing the drive unit.
Pressure oil is led through drillings in the bracket to the bearings
and to a nozzle for lubricating the gears. The gear and the serrated
coupling sleeve are mounted to the shaft with interference and
secured with spring pins.
Check at recommended intervals:
•
the radial and axial clearances of the bearings,
•
the gear clearance,
•
the oil drillings and the nozzle to be open,
•
that the gears and serrated coupling sleeve are firmly fas-
tened to the shaft.
Change worn parts.
22.4.3 Removal of governor
1 Loosen the terminal shaft lever (23), Fig 22-1, and gover-
nor electrical connection.
2 Open the screws (21) and pull the governor vertically
upwards. The governor must not fall or rest on its driving shaft.
22.4.4 Mounting of governor
When mounting the same governor, check that the mark on the
lever (23), Fig 22-1, corresponds to that of the shaft. Check the
setting according to section 22.3.
When mounting a new governor, proceed as follows:
1 Mount the governor into position on the governor drive.
2 Turn the governor terminal shaft
to stop position (in
counterclockwise direction seen from the driving end).
3 Mount the terminal shaft lever (23) as follows, Fig 22-1.
22-9601 Control Mechanism 22
VASA 22 22 - 7