Dongfeng DFA1101GZ5AD6J-907. Manual - part 14

 

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Dongfeng DFA1101GZ5AD6J-907. Manual - part 14

 

 

General Maintenance

8—4

Exhaust GasTurbo Supercharger

The lubricating-oil is  supplied  by    

the main pressure oil passage of the      
engine, and the return lubricating-oil    
will back to the oil pan by the gravity. In         
order  to  avoid  the  leakage  of  the      
supercharger and assure its normal    
operation,  pay  enough  attention  to  the     
process  of  the  inlet  and  return     
lubricating-oil and assure to their 

 

 

 

smoothly process. Do not change the     
shape or area of the return lubricating-      
oil pipe.

The  opening  and  closing  of  the     

exhaust valve of the supercharger is     
controlled by the supercharger itself,    
therefore, please note:

1.The  users  can  not  loosen  or  tighten      
the adjusting nut of the connecting rod      
to adjust the opening pressure of the      
ehaust valve. Otherwise, it is harmful to      
the engine.

2.Do not load or trample the connecting      
rod in any case.

3.If you find the inlet pipe is leaky or the         
supercharger is abnormal during 

 

 

driving, stop the vehicle and check     
them.  But  do  remember  the  exhaust     
valve and sealed pressure chamber    
can  not  be  repaired,  and  if  they  are       
worn , you have to change the turbine       
casing.

Maintenance of the supercharger:
The supercharger belongs to the    

high-speed rotating precise 

 

General Maintenance 

8—5

mechanism,  therefore, it can not be     
disassembled if not necessary. But if     
because of the dust or oily dirt that       
make the rotor or engine abnormal, you      
can have a simple cleaning without     
totally disassembling the supercharger,   
and the specific operating method is as      
follows:

1.Get rid of the dust and oily dirt of the         
surface of the supercharger.

2.Remove the supercharger from the    
engine but do not carry it by the con-        
necting rod.

3.Remove the inlet pipe first then the      
exhaust valve adjustment.

4.Remove the compressor casing, 

 

 

turbing casing and inlet and return oil      
flange.

5.Clean the compressor casing, turbing    
casing and the surface of the two      
impeller.

6.Fill some clean washer liquid from the      
inlet and rotate the impeller by hand      
until the impeller works well.

7.Assemble and install to the engine.

Note:
Do not hit or knock the impeller vane during        

disassembling, assembling and cleaning. If 

 

 

 

there is any hit or knock, do not use the rectified          
blade again. The cleaning liquid could be 

 

  

  

kerosene, gasoline or high quality diesel oil.

General Maintenance

8—6

Air Drier

After 100,000km, check the air tank     

for water. If there is, you should replace       
the air drier.

Check the Oil Level, and Refill the 

Clutch Oil Reservior

The oil reservior of  the  clutch  is       

located in the cab. The fluid level in normal        
condition is between 

MIN and MAX, 

if it is        

below 

MIX

, refill it.

Check  the  pipe  line  before  adding     

fluid. Repair it if there is leakage.

Note:
Do not use the different quality or different       

brand of fluid.

Never use mineral oil as the clutch fluid.
Be sure to use clean clutch fluid.
Be careful not to get the fluid  on  any        

painted surfaces, otherwise  the  paint  will  be      
damaged.

Use special care to seal off the clutch fluid,        

because the clutch fluid will absorb the moisture       
of the air.

Be  extremely  careful  not  to  allow  dirt  or       

dust enter the reservior.  Make  sure  that  the       
reservior and its surrounding areas are clean      
before adding or replacing the clutch fluid.

The Transmission Lubricating Oil

Check the oil level of transmission     

lubricating oil every 4,000 km.  First     
screw off the check plug, if the oil level        

General Maintenance 

8—7

is below the edge of the plug, add oil.        
Then  check the function of vent plug      
and clean it.

Replace the transmission 

 

lubricating oil under the truck heated     
condition every 24,000 km.  Screw  off     
the drain plug first,  drain off the oil in        
the transmission. Then clean  the  drain     
plug (the magnet on the drain plug      
which collects accumulated iron 

 

 

sediment in the oil) and reassemble,     
refill the new lubricating oil through the      
check plug hole.

Note:
If the oil level is too low, the   bearing  and          

gear will be burnt, and if too high, it will  cause          
overheat and oil leakage.

Keep the vent plug fluent.
Be caseful not to allow any dirt  or  dust        

enter the gear box.

The Rear Axle Main Reductor 

Lubricating Oil

1.Inspection screw
2.Oil drain screw

Check the lubricating oil level of     

main reductor every 12,000 km. Screw     
off the oil level check plug first, if the oil         
level is below the edge of checking      
hole,  add oil. Then check  the  function      
of drain plug and clean it.

Replace the lubricating oil of  the     

main reductor every 24,000 km. Screw     
off the drain plug first, drain off the oil,        
then  clean the drain plug  and     
reassemble it. Refill the new lubricating     
oil through the filler hole.

Note:
Fill the lubricating oil  according to  the      

requirement.  Do  not  use  the  normal  gear  oil       

 

 

 

 

 

 

 

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