Renault Koleos Service Repair Manual: Fuel pressure regulator: Removal - Refitting

Renault Koleos Service Repair Manual / Engine and peripherals / Diesel injection / Fuel pressure regulator: Removal - Refitting

M9R

IMPORTANT Consult the safety and cleanliness advice and operation recommendations before carrying out any repair.

 

IMPORTANT Use the diagnostic tool before any operation is carried out on the injection circuit to check:
  • that the rail is not under pressure,
  • that the fuel temperature is not too high.

Working on the circuit with the engine running is strictly forbidden.

 

IMPORTANT During this operation, be sure to:
  • refrain from smoking or bringing red hot objects close to the working area,
  • be careful of fuel splashes when disconnecting the union.

 

WARNING To avoid any corrosion or damage, protect the areas on which fuel is likely to run.

REMOVAL

I - FUEL PRESSURE REGULATOR ON THE INJECTOR RAIL

WARNING Once the warranty period for the injector rail has expired, only the pressure sensor can be replaced.

During the injector rail warranty period, the injector rail should be completely replaced if the pressure sensor fails.

1 - REMOVAL PREPARATION OPERATION

  • Remove the injector rail.

2 - OPERATION FOR REMOVAL OF PART CONCERNED

  • Remove the pressure regulator from the injector rail.

II - FUEL PRESSURE REGULATOR ON THE HIGH PRESSURE PUMP

WARNING Once the warranty period for the high pressure pump has expired, only the pressure regulator can be replaced separately.

Whilst the warranty period for the high pressure pump is still running, the high pressure pump should be replaced as a whole if the pressure regulator displays a fault.

1 - REMOVAL PREPARATION OPERATION

  • Remove the high pressure pump.

2 - OPERATION FOR REMOVAL OF PART CONCERNED

  • Remove the high pressure pump pressure regulator.

REFITTING

I - FUEL PRESSURE REGULATOR ON THE INJECTOR RAIL

1 - OPERATION FOR REFITTING PART CONCERNED

  • Refit the pressure regulator on the injector rail.

2 - FINAL OPERATION

  • Refit the injector rail .

II - FUEL PRESSURE REGULATOR ON THE HIGH PRESSURE PUMP

1 - OPERATION FOR REFITTING PART CONCERNED

  • Refit the pressure regulator on the high pressure pump.

2 - FINAL OPERATION

  • Refit the high pressure pump.
    High pressure pump: Removal - Refitting

    Diesel return pipe: Removal - Refitting

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