Dongfeng DFA1101GZ5AD6J-907. Manual - part 15

General Maintenance

8—8

instead, otherwise it  will damage and rub  the       
gear face quickly.

Be careful not to allow any dust or dirt enter         

the main reductor.

Keep the oil level at normal height, 

 

 

 

 

 

overheight or overlow will effect the service.

Keep the vent plug fluent.

Power Steering Lubricating Oil

1.Oil filler cap with oil level stick
2.Hydraulic oil cartridge
3.Oil reservior

Before check the oil level, clean the      

oil reservior first, then screw off the oil       
filler cap with oil level stick. Clean the       
stick  and  reassemble  it,  then  remove     
again to see the oil level. If the height of         
the oil level does not between the high       
and  low  scale  of  the  oil  level  stick,  it        
need  to  be  filled  with  same  brand      
hydraulic oil.

Check the lubricating oil  every    

4000km, and if it is insufficient, please      
refill it to the oil filler edge.

Replace  the  steering  oil  every    

4,8000km.

Replace the oil of power steering     

fluid every 2,4000km.

Replace procedure:

1.Block  the  rear  wheel  with  triangle     
bolster, set the transmission to neutral     
and  rise  the  front  axle  with  the  jack  to        
make the wheel away from the ground.

2.Screw  down  the  inlet  and  outlet  oil      
tube joint to exhaust the steering 

 

 

 

 

system oil, and start the engine at the       
same time, turn the steering wheel.

3.After make sure the oil has been      
drained  off,  open  the  cap  of  the  oil       

General Maintenance 

8—9

reservior to replace the hydraulic oil     
cartridge.

4.After replace the cartridge, first refill     
the oil reservior and then start the      
engine to idle for a short time, then cut        
off the engine and refill the hydraulic oil.       
Do this process for several times until      
the oil level is between the MAX and       
MIN of the oil level stick.

Note:
Forbid to refill the hydraulic oil during      

engine running.

During engine idling, turn the steering     

wheel at clockwise and counter clockwise to      
help exhausting the air in the system.

You must cut off the engine when you       

check the oil level.

Battery Checking and 

Maintenance

Before checking the battery 

 

 

system,  be sure to cut off  the  main       
power switch.
●

 Check the battery liquid

Check the battery liquid monthly  or     

every 4,000 km. The liquid should be      
above the plate  15 to  20  mm.  If  it's        
lower than that, add distilled water, and      
charge the battery for 30 minutes until      
the distilled water mixed with the 

 

 

 

 

battery liquid.

1.Electrolyte

2.Plate

General Maintenance

8—10

●

 

1.Float
2.Reading
3.Level of electrolyte

Checking specific gravity of electrolyte

Check specific gravity of electrolyte    

every 12,000km or three months.Use    
the hydrometer to check.  The  normal     
specific gravity is between 1.26~1.265    
(when the electrolyte temperature is 20     
℃）

. If the specific gravity is less than       

1.22, the battery must be recharged.

Note:
Never use thick lead or tool earth connect       

the two poles of battery and other short circuited        
method (observing the strong and weak of the       
electric spark) to check the electric capacity.

Fuse

Be sure to affirm the load of fuses       

before  replacing.  If  the  new  fuse  are      
blown  easily,  you  should  find  out  the      
reason and repair it.

Note:
Never  use  normal  lead  or  the  fuse  with       

other load instead.

Suspension

After the running-in  of  new  truck,     

tighten the U-bolt and nut of leaf spring       
under the certain torque of fully laden      
condition.

The  tightening  torque  of  front  leaf     

spring U-bolts and nuts is 

250~300N.m;     

the  tightening  torque  of  rear  leaf  spring  is       

300~350N.m.

Tighten the leaf spring U-bolts and     

nuts every 12,000km.

General Maintenance 

8—11

Tire Rotation

Rotate  the  tires  according  to  the     

picture every 12,000Km. The  principle    
for tire rotation is as follows:

1.The  differential  of  outer  diameter  of     
two  rear  axle  tirs  is  no  more  than       
12mm. Mount  the  smaller  one  to  the      
inside wheel.

2.Mount the same type, less wear and      
blanced tires on the front wheel.

3.After rotation, the turning direction of     
tires should be opposite from its former      
mounting direction.

4.New tires must be used in pair.

5.Be sure to mount the tires of the       
same size in the same shaft, otherwise      
it will cause braking deviation,  cab     
swing and lost controlled steering.

6.Check whether there is any scars on      
the  wheel  hub  bolts  and  wheel  nuts.      
For the sake of the safty, whenever      
there is screw damage in bolt or nut, it        
must be replaced in pairs as the other       
part may also be damaged.

7.Check the connecting (ball) surface    
of the tire rim and the installing hole to        
see  whether  there  is  any  deformation     
or damage. If there is, replace it. And if        
there is any damage on the ball surface       
of tire nut, replace it, too.

8.Check the rim of the tires, if there is        
any cracks, replace it.