Dongfeng DFA1101GZ5AD6J-907. Instruction - page 10
Running-in and Maintenance of New Vehicle
5—1
Running-in and Maintenance
of New Vehicle
The correct running-in of a new
vehicle has a great influence to the
vehicle service life and its reliability.
The running-in kilometrage of a
new vehicle is specified as
1500~2500km, and the vehicle will be
used normally only after 2,500 km's
running-in. Because it will reach the
peak of its power at that time. Other-
wise the insufficient power and earlier
overload operation will cause the parts
of engine overwear.
You should follow the below rules
during the running-in period:
Before Running-in
Clean the vehicle and check the
tightness and connecting of every part.
Check the level of the water tank,
and the cooling system(to see whether
it is leaky or not).
Check the lubricating oil level of the
engine, clutch control system, gear
box, rear axle, and steering system to
see whether the oil should be added,
and check whether every part is leaky
or not.
Check whether every part of
steering is loosen or seized.
Check whether the brake system
works normally, and the connecting
pipe is leaky or not.
Running-in and Maintenance of New Vehicle
5—2
Check whether electrical
equipments, lights and instruments
work normally. And check the level of
the electrolyte of battery.
Check whether the tyre pressure is
up to the standard.
Check whether the speeds of gear
shift is engaged.
Running-in Period
The vehicle shold be run on flat
and paved road.
Corretcly drive, engaging the clutch
smoothly, shifting gear in time, avoid to
accelerate suddenly and brake sharply.
Load specified:The load capacity
can't be over 70% of rated load during
running-in period.
Pay attention to the temperature of
gear box, rear axle, wheel hub and
brake drum. If the temperature is too
high, you should find out the reason
and adjust or maintain.
Specially notice the oil pressure
and control the normal temperature of
the engine coolant.
After Running-in
After the running-in, please go to
the truck technical service station to do
the running-in service. The service
should be carried out according to the
"Maintenance Schedule".
Driving Recommendations
6—1
Driving Recommendations
Proper driving habits will not only
result in longer service life and better
performance, but also in greater
economy and safety in operation. Be
sure to observe the following rules.
1.When the engine is cool, do not start
to run hurrily. Do the cold start, first
allow it to be a permissible speed, and
the exhaust smoke is bluish-white, so
the oil pressure engine combusion will
be stable along with the heating of the
engine.
2.Never run-up the engine speed
unnecessarily. If the temperature of the
cooling water is low, it will cause the
engine damage. If the temperature is
below 0 ℃ , the engine should run in
moderate speed for 5 minutes before
full load running.
3.The engine speed can't exceed
2,500r/min before the driving mileage is
at 4,000km.
4.Avoid full-throttle starts fully and
brake suddenly, the first case will cause
the clutch damage or the tyre wear
while the second case will accelerate
wear on both the tyre and brake linings.
Driving Recommendations
6—2
5.Don't overload driving. It will shorten
the service life of the vehicle.
Driving on a slope
When descending a slope, be sure
to keep the vehicle speed within a
safety, controllable range by utilizing
the engine, exhaust brake, and the foot
brake.
When down shifting, as well as
when descending a slope, engine can't
be over 3000 r/min. Excessive running
of the engine may cause some of the
part to receive under stress and could
result in mechanical problems.
Before descending a steep or a
long gentle slope, apply the brakes and
make sure that the brake system
functions normally.
When driving on a downgrade or
shifting into a lower gear, make sure of
the vehicle speed by checking the
speedometer,
and the engine
revolution by tachometer.
Clutch Operation
When use the clutch, release
quickly and thoroughly. To release half-
way is one of the reason of clutch
damage. Avoid engaging partially