8.
PRECAUTIONS
FOR
MOUNTING
THE
ENGINE
ON
THE
EQUIPMENT
The installation of an engine to the equipment effects greatly to the ease
of
maintenance.
8-
1
INSTALLATION
When designing the equipment, pay a sufficient attention to the mounting position,
coupling methode with the equipment, base and supports.
8
-
2
VENTILATION
Engine requires a sufficient amount of clean and fresh air for. combustion of fuel and
cooling.
If the engine is covered with an enclosure,
or
the engine is operated in a small room,
the engine may overheats unless
a
sufficient amount of fresh air
is
supplied from the
outside of the engine room.
High surrounding temperature also causes the deterioration of engine oil, increased oil
consumption, lower output, and piston seizure resulting in the shorter engine life.
Therefore, it is necessary to provide a duct or a baffle to the engine to prevent
recirculation
or
reflection
of
hot cooling air.
A
prudential attention have to be paid to keep the engine room temperature below
50°C
(122"
F).
8-3
EXHAUST
GAS
Exhaust
gas
is
noxious. Be sure to discharge exhaust gas outdoors when operating the
engine indoors
or
in
a
poorly ventilated area such
as
in a cave, tunnel, etc.
If
an exhaust pipe extension is used to discharge exhaust gas, be careful of the inner
diameter of the pipe to prevent power loss.
/
Recommendation of exhaust pipe extension
:
Less than
3
m long
:
inner diameter
35
mm.
Less than
5
m
long
:
inner diameter
38
mm.
8-4
FUEL
SYSTEM
If
the fuel tank is separately mounted on the equipment from the engine, be sure to
set the bottom
of
fuel tank not less than
50
mm higher than the fuel injection pump.
If
the tank
is
mounted too low, the fuel may not be supplied properly to the engine.
When piping the engine, be carefuI
of
heat conduction, pipe size, bends, and leaks from
the joints and make the fuel pipe as short as possible
to
prevent air and vapor from
being trapped.
-
56
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