Renault Koleos Service Repair Manual: Diesel return pipe: Removal - Refitting

M9R

Diesel injection

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 - REMOVAL PREPARATION OPERATION

  • Remove the front engine cover.

Diesel injection

  • Rotate the clip (1) of the intercooler air inlet pipe on the turbocharger.

Diesel injection

  • Remove the intercooler air inlet pipe bolt (2) from the fuel pipe support.
  • Move aside the intercooler air inlet pipe.

Diesel injection

  • Remove the protector plate (3) from the injector rail protector.
  • Remove:
    • the injector rail protector.

Diesel injection

  • Disconnect:
    • the brake servo pipe (4) of the non-return valve,
    • the vacuum pipe (5) of the non-return valve.

II - OPERATION FOR REMOVAL OF PART CONCERNED

Note: During this operation, mark the routing of the diesel return pipe before removing it.

Diesel injection

  • Disconnect the quick-release union (6) from the diesel return pipe on the high pressure pump.
  • Insert the blanking plugs.

Diesel injection

  • Disconnect:
    • the diesel return pipe quick-release union (7) on the injector rail,
    • the diesel return pipe quick-release union (8) from the diesel injector fuel rail.
  • Insert the blanking plugs.

Diesel injection

  • Disconnect the quick-release unions (9) from the manual priming pump.
  • Insert the blanking plugs.
  • Remove:
    • the nuts and the bolt (10) from the fuel filter protector,
    • the fuel filter protector (11) .

Diesel injection

  • Remove:
    • the fuel return quick-release unions (12) from the fuel filter,
    • the fuel return quick-release union (13) from the fuel pipe to the tank.
  • Insert the blanking plugs.
  • Unclip the diesel return pipe from the mounting clips.
  • Remove the diesel return pipe.

REFITTING

I - REFITTING PREPARATION OPERATION

  • Always replace the seal of the intercooler air inlet pipe.
WARNING Do not remove the blanking plugs from each component until the last moment.

Also, do not remove the components from their packaging until they are to be fitted to the vehicle.

II - REFITTING OPERATION FOR PART CONCERNED

Note: During this operation it is essential to correctly position the diesel return pipe.
  • Fit the fuel return pipe.
  • Remove the blanking plugs.
  • Connect the fuel return quick-release unions:
    • to the high pressure pump,
    • to the injector rail,
    • to the diesel injector fuel return rail,
    • to the fuel pipe going to the tank,
    • to the fuel filter.
  • Unclip the diesel return pipe from the mounting clips.
  • Refit:
    • the fuel filter protector.
    • the fuel filter protector nuts,
    • the fuel filter protector bolt,
  • Torque tighten:
    • the fuel filter protector bolt (10 N.m),
    • the fuel filter protector nuts (25 N.m).
  • Connect the quick-release unions of the manual priming pump.

III - FINAL OPERATION.

  • Connect:
    • the vacuum pipe to the non-return valve,
    • the brake servo pipe to the non-return valve.
  • Refit:
    • the injector rail protector.

Diesel injection

  • Remove the intercooler air inlet pipe seal using a tweezers.

Diesel injection

Note: Check that the intercooler air inlet pipe seal is fitted in the right direction.
  • Refit:
    • the new seal (14) of the intercooler air inlet pipe,
    • the protector plate on the injector rail protector.
  • Turn the intercooler air inlet pipe to refit the clip in its housing.
  • Clip the intercooler air inlet pipe on the turbocharger.
  • Refit the intercooler air inlet pipe bolt on the fuel pipe support.
  • Torque tighten the intercooler air inlet pipe bolt (8 N.m).
  • Prime the fuel circuit using the manual priming pump.
  • Refit the engine cover.
    Fuel pressure regulator: Removal - Refitting

    Diesel injector fuel return rail: Removal - Refitting

    See More:

    Renault Koleos Owners Manual > Practical advice: Rear and side lights: changing bulbs
    Side lights and brake lights 1 Consult an approved Dealer. Direction indicators 2 Consult an approved Dealer. Reversing lights Open the tailgate. Unclip the trim 3 and remove it. The bulbs are under pressure and can break when replaced. Risk of injury. Turn bulb holder 4 fully anticlockwise and cha ...

    Renault Koleos Owners Manual

    Renault Koleos Service Repair Manual

    © 2018-2020 Copyright www.rkoleos.com
    0.0109