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( 玉 ). Air intake尧 exhaust
systems
1. Brief description of structure
Intake system includes air intake
tube assembly尧 air cleaner assem鄄
bly尧 engine air intake tube and air
intake manifold; Some also includes
transitron. Air exhaust system in鄄
cludes exhaust pipe尧 muffler and ex鄄
haust tailpipe etc.
2. Air cleaner
Inlet pipe and air cleaner assembly
that are installed on back of the cab
and move with the cab tilting are
connected flexibly
The function of air filter is to filter out
the dust and the sand coming into
the engine.
Air filter is cyclone dust gathering air
cleaner with paper filter element. Af鄄
ter external air comes into the air fil鄄
ter through the air inlet pipe, larger
dust particle can be separated from
the air by the function of cyclone
vane, then can be thrown into the
dust gathering plate, the separated
air keep on moving and comes into
the cylinder by the filtering function
of the paper element.
For every 1000km running, check
and maintain the air filter. When run鄄
ning in the condition of excessive
dust, the running mileage interval for
inspection and maintenance should
be shortened suitably.
Cleaning of the air cleaner:
1) Remove the dish-shaped nut from
the end cover. Take away the end
cover, remove the inner nut and take
off the filter element assembly.
2) Clean the cover cap and the inner
part of the housing with dry and
clean cloth. When cleaning, do not
let the moisture come into the air fil鄄
ter.
盂 Check and clean dust exhauster
regularly to ensure that it is complete
and effective.
榆 Clean filter element of the air
cleaner: Clear dry contamination or
dirt with a compressed -air gun (air
pressure should be lower than
690kPa). The air must blow from in鄄
side of the filter element to the out鄄
side, or you can pat face of the pan鄄
el. Never clean contamination and
dirt by beating or striking. If the filter
element is found to be jammed due
to too long time of using, which re鄄
sults in damage or oil pollution to
surface of the filter element, the filter
element must be replaced.
Using and maintenance院
1) The service life of the engine has
great relationship with the workman鄄
ship of the air filter. It爷s absolutely
forbidden that the engine works
without air filter or on the condition
that the air filter is disabled. Taking
the intake opening of air filter as the
original intake opening is forbidden.
2) For every 1000km running, check
the inlet and exhaust manifold ac鄄
cording to the following steps:
a. Check nuts for looseness, when
tightening the nuts on the inlet and
the exhaust manifolds, the torsion
force should be equable, or else
there will be air leak.
b. Check the inlet and the exhaust
manifolds for crack and hole, check
the gasket for damage and erosion,
if found, replace them with a new
ones.
3. Using and inspection of air
intake system
淤 Durability of engine relates to
working condition of the air cleaner.
It爷s forbidden to let the engine run
under the condition that there is no
air cleaner or the air cleaner doesn爷t
work; it爷s also forbidden to use in鄄
take opening of the air cleaner as the
primary air intake opening.
于 after 1000km of running, the air
intake and exhaust manifolds should
be checked for following items:
a. Whether nuts loosen; tighten nuts
of air intake and exhaust manifolds
with uniform torque, or there will be
air leak.
b. Whether there are cracks or holes
on air intake and exhaust manifolds;
whether there is damage or corrosion
to the gaskets. If found, replace for
new ones.
(域). Cooling system
Brief description of the struc鄄
ture
Cooling system adopts closed wa鄄
ter-cooling pressure cycle type. It is
composed of radiator尧cooling fluid尧
thermostat尧
fan
gear尧connection
hose etc.. Type of the radiator is
HFC1045
series trucks