Dongfeng DFA1101GZ5AD6J-907. Manual - part 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