Combustion system inspection
The check must be executed both when the engine discon-
nected and when it is running.
The check operation consists in examining the fuel pipelines
running from the tank to the pre-filter (if provided in the spe-
cific equipment), to the filter, to the high pressure pump and
to the rail diffuser and from this last one to the head.
Special attention must be paid to the connections on the high
pressure pipelines.
!
Due to the high pressure within the pipelines running
from the high-pressure pump to the rail diffuser and
from this last one to the electro-injectors, special
attention must be aid also in checking presence of any
leakage or blow-by.
Protect the eyes and the skin from any eventual high
pressure jet: these may deeply penetrate under the
skin surface provoking serious poisoning.
Cooling system inspection
The check must be executed both when the engine discon-
nected and when it is running.
Check the pipelines from the engine to the radiator, from the
expansion tank and vice-versa. Find out any blow-by, verify the
status of the pipes specially close to the holding strips.
Verify that the radiator is clean, the correct working of the fan
flywheels, the presence of any leakage from the connectors,
from the manifold and from the radiating unit.
!
Due to the high temperatures achieved by the sys-
tem, do not operate immediately after the engine’s
disconnection, but wait for the time deemed necess-
ary for the cooling.
Protect the eyes and the skin from any eventual high
pressure jet of cooling liquid.
Lubricating system inspection
The check must be executed both when the engine discon-
nected and when it is running.
Verify the presence of any oil leakage or blow-by from the
head, from the engine pan of from the heat exchanger.
!
The engine oil is highly polluting and harmful.
In case of contact with the skin, rinse well with water
and detergent.
Adequately protect the skin and the eyes, operate in
full compliance with safety regulations.
Disposal must be carried out properly, and in full
compliance with the law and regulations in force.
Inspection of water presence within fuel filter or pre-filter
!
The components of the common rail system can be
damaged very quickly in presence of water or impur-
ity within the fuel.
Timely proceed operating on the pre-filter (not avail-
able on the engine block) to carry out the drainage of
the water within the feed circuit.
The density of the cooling liquid must be checked any how
every year before winter season and be replaced in any case
every two year.
!
In case of new filling, proceed bleeding system,
through the bleeds on the engine.
If bleeding of the system is not carried out, serious in-
convenience might be caused to the engine due to
the presence of air pockets in the engine’s head.
SECTION 3 - DUTY-INDUSTRIAL APPLICATION
59
F4HE NEF ENGINES
Print P2D32N003GB
Base - February 2006