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

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