Nanni 4.390 TDI User Manual - page 9
User manual
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Note: Modern diesel engines are precision machines
which require high quality fuel and lubricant.
Lubrication of Engine and Gearbox
Engine
-Oil pump lubrication system, pressure regulated by
discharge valve.
-Oil filter implementing throw-away cartridge
Transmission
See separate specifications
Filling with engine oil
The engine oil is poured through the port located on the
rocker gear cover by unscrewing the plug (for more
information, refer to the servicing section). Check the
oil level using the gauge.
Never fill with oil past the maximum mark.
Note: The oil qualities and quantities are indicated in
the technical characteristics table (given in appendix).
Fuel circuit
Composition
Main filter
Seawater / fuel cooler (if equipped)
Booster pump (if equipped)
Injection pump
High pressure injection tubes
Injectors
Fuel circuit purge
-Check the fuel level in the fuel tank.
-Open the fuel valve, then open the purge screw on the
upper part of the filter
20
. Use the priming pump
13
to
pump. Close the screw when there are no more air
bubbles. In the event of total unpriming of the fuel
circuit, proceed as follows :
-Loosen the supply tube of injector No. 1 and turn the
engine using the starter until fuel appears. Close the nut
and proceed in the same way for the other injectors.
-Start the engine and check for any leaks.
DANGER: - Do not smoke or bring any flame or
spark near the engine.
- Always sponge up any fuel spilled and throw away
any object which may contain hydrocarbons in an
appropriate location to protect the environment.
Cooling circuit
The cooling circuit comprises two different circuits: the
closed circuit with coolant and the open circuit with
seawater. The circuit may comprise a single circuit
only as in the case of a keel cooling configuration. This
is a specific installation which you can see on our
Internet site: www.nannidiesel.com
Closed circuit with coolant
This circuit comprises a pump driven by a crankshaft
through V-belt(s), a water temperature exchanger (or an
exchanger body for a « keel cooling » configuration),
and a thermostat-controlled valve.
Seawater circuit
This circuit comprises a pump, a freshwater/seawater
temperature exchanger, a supercharged air cooler (if
equipped), a fuel cooler (if equipped), a gearbox oil
cooler (if equipped) and an exhaust elbow.
Coolant
Recommendations for first startup.
-Check the tightening of the drain plug
36
and open the
vent plug
31
.
-Prepare a permanent anti-freeze mixture with 50%
antifreeze and 50% fresh water. The required quantity is
indicated in the table of technical specifications.
Pull the mixture into the filler hole
30
then close the vent
plug when the mixture appears. Continue filling up to the
maximum level. Possible top-ups in the future should be
performed using fresh water only with the engine cold.
Start the engine and top up the level. Check for any
leaks.
Every two years, at the start of the season, fully drain the
cooling circuit, clean it with fresh water and fill it in
accordance
with
the
above
instructions
(see
SILVERWAKE warranty conditions).
DANGER: -The coolant must be filled with the
engine stopped and cold – Do not smoke or bring a
flame near to this area.
-Keep away from rotating components when the engine
is running.
CAUTION: Never add pure antifreeze. Use of
additives or other types of coolants can result in
formation of insulating deposits and overheating of the
engine. Never use all-season, ready-to-use products.
Connection for hot water
An installation for heating the on-board water can be
connected (contact your NANNIDIESEL agent).
Seawater filter
A water filter must be installed between the pump and
the seawater intake. This filter should be checked and
cleaned regularly.
CAUTION: Before starting up the engine, check
that the seawater intake is open. The seawater pump
rotor can be damaged if run dry for only a few seconds.
After cleaning the seawater filter, carefully close the
cover to prevent the seawater pump from sucking in
air.
Note: The information concerning the electrical components and their wiring is given in appendix pA-10.