Lifan 620. Manual - part 39

Section VI    Intake and Exhaust System   

 

I. Air Cleaner Assembly   

Removal and installation (Fig. 2-82 shows the air cleaner assembly of sedan with TRITEC1.6L 
engine). 

Note: 

The filter core is made from waste paper and resin. Notes for operation: 

 Do not inflict severe collision and load after assembly and removal.

①

 

 

②

The core should be well cooperated with the housing below the air cleaner during assembly.   

 

7. Spring clip                                                                      8. Air cleaner lower cover   

9. Air cleaner assembly                          10. Hexagon bolt with flat washer   

11. Liner tube                                  12. Anti-vibration pad 

13. Snap button                                14. Air cleaner intake pipe assembly  

15. Spongy cushion of cavity resonator            16. Hexagon flange bolt  

17. Cavity resonator assembly                    18. Hexagon flange nut  

19. Bearing weldment bolt 

 
 

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II. Removal and Installation of Exhaust Pipe and Muffler   

1. Removal and installation (Fig. 2-83 shows the exhaust system of the TRITEC1.6L engine) 

 

 

 

2. Inspection   
Start the engine and check if there is leakage in the components of the exhaust system 
assemblies. In case of a leakage, repair or replace it as necessary. 
Check all components or assemblies. In case of open weld or damage, replace it if necessary.

   

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Chapter III  ABS  

 

Section I    Function and Composition of ABS 

 

I. Function of ABS 

 To improve stability of the vehicle;

①

 

 To ensure steering 

②

performance of the vehicle; 

③

 

Hydraulic control unit is composed of two hydraulic circuits and solenoid valve, which calculates 

and determines slide situation to decide the ABS operation according to the signal from the sensor, 

and then controls the program to start the solenoid valve and motor to increase, decrease and 

maintain the pressure and so on. 

3. Sensing 

The sensing sends the signal from the gear rotation detection to ECU. 

4. Motor 

The motor rotates according to the signal of ECU. And the bearing transfers the rotation into 

straight reciprocating motion to cycle the brake fluid. 

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Section II    Principle of ABS 

 

I. Control Principle of ABS   

Fig. 3-2 shows the control principle of ABS. 

 

 

 

 

Fig. 3-3 

The pressure of master pump will be transmitted to wheel slave cylinder through normally opened 

valve to apply the brake. If no further braking is needed, the driver can reduce the pressure to the 

brake pedal, which allows the brake fluid return to master pump for pressure decrease. 

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