HAIMA 7 Service Manual(MT)-F Air-intake System

Online Pdf HAIMA 7 Service Manual(MT)-F Air-intake System

Precautions for Maintenance 

  1. Don’t disconnect any parts or connectors of the electronic fuel injection system, otherwise they may be damaged or cause water, oil pollution and other impurities entering into connectors resulting in impairing of performance. 
  2. Ignition switch should always be turned off when disconnecting/connecting connectors or the electronic component will be damaged. 
  3. When performing trouble thermal simulation and other operation which may cause increase of temperature, the temperature of electronic control unit must not be higher than 80°C. 
  4. As feed pressure of electronic fuel injection system is high (about 400kPa), all fuel pipes should be of high resistance. Even with engine not running, the fuel pressure is relative high in the fuel pipe. Therefore, do not disconnect the fuel pipe casually in maintenance. Perform the process of pressure relief before disconnecting the fuel pipe if fuel system needs to be repaired. The process is as follows: remove fuel pump relay and start engine and operate it at idling speed; connect diagnosis instrument; enter into “actuator test” to stop fuel pump until engine stops automatically. Removal of fuel pipe and the replacement of fuel filter should be conducted by professional technicians at place of good ventilation. 
  5. To prevent electric spark which may cause fire accident, do not electrify the fuel pump when it is removed from fuel tank. 
  6. Do not test the fuel pump in dry state or in water, otherwise service life may be impaired. Do not connect the positive and negative electrode wrong. 
  7. During inspection of ignition system, perform the sparking test only when necessary and the testing time should be as short as possible. Throttle can not be open, or unburned fuel will enter into the exhaust pipe resulting in three-element catalyst converter damaged. 
  8. As idling speed is adjusted completely by electronic fuel injection system, no human adjustment is needed. The accelerator limit screw of throttle body is adjusted before leaving factory. Users must not change it under any conditions. 
  9. Connecting the positive and negative electrode wrong may cause electronic components damaged. Negative ground is used in this system. 
  10. Battery cable must not be disconnected with engine running. 
  11. Before electric welding, disconnect positive and negative electrode of the battery and remove electronic components. 
  12. Do not transpierce the skin of the wire to test the input and output electric signals of parts. 

Table Of Contents Air-intake System 
Fuel and Emission Control System

  1. Air-intake System.F-1 
  2. Vacuum Hose Diagram.F-1 
  3. Air-intake System Removal/Installation.F-1 
  4. Removal/Installation of Accelerator Pedal.F-2
  5. Fuel System.F-3 
  6. Preparation for Maintenance.F-3 
  7. Safe Operation Procedures.F-3 
  8. Inspection after Maintenance.F-3 
  9. Fuel Leakage Inspection.F-3 
  10. Removal/Installation of Fuel Tank.F-4 
  11. Fuel Tank Inspection.F-4 
  12. Check Valve Inspection.F-5 
  13. Inspection of Fuel Line Pressure.F-5 
  14. Fuel Pump Assembly Removal/Installation.F-6
  15. Inspection of Fuel Pump Assembly.F-6 
  16. Continuity Inspection.F-6 
  17. Open/Short Circuit Inspection.F-7 
  18. Removal/Installation of Fuel filter.F-7 
  19. Carbon Canister Inspection.F-7 
  20. Carbon Canister Solenoid Valve Inspection. F-8 Open/Short Circuit Inspection.F-8 
  21. Exhaust System.F-9 
  22. Inspection of Exhaust System.F-9 
  23. Exhaust System Removal/Installation.F-9 

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