•
2.4
Major
Servicing Pai
Name
of Part
•Fuel
filter
Function
Removes
dust and water from fuel. The
filter
is a cartridge type, and the fuel element
should
be replaced before clogging
occurs.
Hr=,in*»ri neriodicallv
A
water separator is on the bottom of the
filter
and should be drained^?
e
"2 Sd water
(for
4LHA-HTP/HTZP).
For
4LHA-DTP/-DTZP/-STP/-STZP,
dram the dust and water
periodicaly
removing the drain plug at the bottom of
filter.
•Fuel
feed pump
Feeds
fuel to the fuel injection pump builting-in the fuel injection pump
(4LHA-HTP/-
F?4LHA-DTP/-DTZP/-STP/STZP,
it is attached
with
the fuel injection pump.
•Fuel
priming pump
This
is a manual fuel pump. Moving the knob on the top of f«jj^j^g* ^
fuel
-
The
pump is also used to bleed air from the fuel system
(4L.HA-HTP/
H urj.
For4LHA-DTP/-DTZP/-STP/-STZP,
moving the knob on the fuel feed pump attached
with
the fuel injection pump feeds the fuel to bleed air.
•Lube
oil filler cap
•Lube
oil
filter
Filler
port
for engine lube oil. . —
Filters
fine metal fragments and carbon from the lube oil
f
doq^
The
filter
is a cartridge type and the
filter
element should be replaced before cog^
occurs.
.
[Coolina
Water
System]
•Fresh
water cooler
OFiller
cap
OSub
tank
ORubber
hose
•Fresh
water pump
•Seawater
pump
This
engine has two cooling water systems (for fresh water & ^ seawaj0
Fresh
water flows from the fresh water tank
into
the fresh water cooler, where the tresn
r^eS^^
It
further
cools the turbocharger and goes back to the fresh water tank.
[Coolina
Water
System]
•Fresh
water cooler
OFiller
cap
OSub
tank
ORubber
hose
•Fresh
water pump
•Seawater
pump
The
fresh water cooler is a heat exchanger using sea water
wSen "L
engine stops and cooling water
cools,
the pressure hthe
ca**
waw
tank aiso dro^s to negative^^^^^ZSSS"*
back
from tne suo
xan*.
i ms nun . —. •
[Coolina
Water
System]
•Fresh
water cooler
OFiller
cap
OSub
tank
ORubber
hose
•Fresh
water pump
•Seawater
pump
The
centrifugal water pump circulates fresh cooling water ins.de the engine.
The
pump driven by the V-belt.
[Coolina
Water
System]
•Fresh
water cooler
OFiller
cap
OSub
tank
ORubber
hose
•Fresh
water pump
•Seawater
pump
The
rubber impeller-type pump is driven by
gears.
Do not operate it
without
seav^f,
due
to damage the impeller.
•Oii
cooler
This
heat exchanger cools high temp, engine oil by seawater.
•Turbocharger
The
pressurized intake air feeding device: the exhaust gas turbine » rotateo oy
the exhaust gas, and the power is used to rotate the blower.
This
pressurises
the intake air for sending to the cylinaer.
•Inter-cooler
This
heat exchanger cools the pressurized intake air from the turbocharger
with
seawater.
•Anticorrosive
zinc
The
metal area of the seawater cooling system is prone
^f^^^i
this
The
anti-corrosive zinc is installed in the oil cooler, inter-coole • etato
P
r
eve
nt
ttu*
The
anti-corrosive zinc is itself reduced overtime by electncal oomxjor. so t mua oe
replaced
at fixed intervals before it is completely consumed m-order to ensure
that
the
metal area of the seawater cooling system remains fully protected.
•Name
plate
Name
plates are provided on the engine and have the model, senal number and other
data.
•Starter
motor
•Alternator
Starts
the engine powered by the battery.
Driven
by belt, and generates electricity and charges the battery.
-16-
I
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