Marine Installation Manual
2021-08
3-12
3 Engine Installation
3.6 Assembly
X72DF
3.6.2
Installation of a complete engine
In the event that the engine is shipped in part deliveries and assembled at the
shipyard before installation in the vessel, the shipyard is to undertake assembly
work in accordance with the demands of a representative of the engine builder
and the classification society.
Please observe:
•
Engine mounting is to be carried out systematically.
•
The measurement readings have to be recorded on appropriate log sheets
and compared for correctness with the data in the ‘Engine Assembly Re
-
cords’ completed after test run in the manufacturer’s works.
•
The engine is to be lowered onto blocks placed between the chocking
points.
•
The blocks are to be set in such a manner that the engine is slightly higher
than the final position, because less effort is required to lower the engine
than to raise it for alignment.
•
For movements in the horizontal plane, both in lateral or longitudinal di
-
rections, the shipyard is to construct appropriate anchor points for the use
of hydraulic jacks. Such movements have to be carried out with great care
to avoid stresses and distortions to the bedplate.
•
Regular crankshaft deflection readings have to be taken to observe the ef
-
fects, and any noticed deviation has to be rectified immediately.
3.6.3
Installation of an engine from assembled subassemblies
Subassemblies of the engine may be assembled ashore before installation in the
ship. One such assembly may comprise the following components:
•
Bedplate
•
Main and thrust bearings
•
Crankshaft
•
Turning gear
•
Flywheel
The placing on blocks and alignment to shafting is analogue to that described in
section
.
3.6.4
Installation of an engine in ship on slipway
Installing a complete or partially assembled engine in a ship under construction
on an inclined slipway is possible when careful attention is paid to the following:
•
Large components suspended to take account of the incline
•
Tie rods centred and exactly perpendicular to the bedplate before tight
-
ening.
•
Side, fore and aft arresters temporarily fitted to prevent the engine from
moving during launching of the ship
•
Additional temporary stays attached at upper platform level to steady the
engine during launching
NOTE
• Strict attention is to be paid to the removal of anti-corrosion coatings
and the subsequent application of rust preventing oil where required.
• The alignment tools are to be clean and ready for use.
