bling and little operating noise.
2. Accelerating wire drawing:
It operates by the soft wire drawing.
And it has traits of reliable structure尧
convenient layout尧 little frictional re鄄
sistance and stable transmission.
3. Hand throttle wire drawing:
Using with the foot throttle can quick鄄
en the preheating of the engine or in鄄
crease the idling speed.
Using and adjustment
1. Check the chucking position of the
linkage rod and the accelerator
mechanism for rightness and reliabil鄄
ity, check the direction of the wire
drawing for straight and check on
the cornering for smooth transition.
2. The pedal should be depressed
easily and to the extreme position
without jamming. When releasing the
pedal, it should be returned freely.
3. When depressing the pedal, if the
free play is too big or the opening
extent of the accelerator is not e鄄
nough, adjust the position of bolts.
Fuel supply system
Brief description of the struc鄄
ture
Fuel supply system is composed of
fuel tank尧 fuel filter尧 fuel pump尧 fuel
injection pump尧 fuel inlet line and fu鄄
el return line. The schematic diagram
of fuel supply system is shown in the
below figure.
The function of the fuel supply sys鄄
tem is to inject the specified quantity
diesel fuel of specified pressure and
good atomization into the cylinder at
the correct time with definite interval
of injection according to the operat鄄
ing requirement, and take good com鄄
pression ignition with the air rapidly.
Its operating state has important in鄄
fluence on the power and economical
1尧fuel return line; 2尧fuel inlet line;
3尧frame; 4尧fuel tank
schematic diagram of
fuel supply system
24
HFC1020
series trucks
performance of the engine.
1. Diesel fuel filter: the filter which is
mounted on the left side of the en鄄
gine body can filter out impurity of
small particle to ensure the cleaning
of diesel fuel.
2. Fuel tank: the fuel tank volume of
this series trucks is 90 liters, the tank
cap has lock. And install the filter
gauze inside the fuel filler port to pre鄄
vent impurity of large particle enter鄄
ing into the fuel tank, set oil drain
plug on the bottommost position of
the fuel tank to drain the deposit and
water on the bottom of tank when
cleaning the fuel tank.
Using and maintenance
1. Check the chucking position of
pipeline interface for sealing, reliabil鄄
ity and air leakage.
2. Clean or replace the filter element
of diesel fuel filter periodically ac鄄
cording to rules in the operating
specification of the engine.
25