Renault Koleos Service Repair Manual: Catalytic converter: Removal - Refitting

M9R

REMOVAL

I - REMOVAL PREPARATION OPERATION

• Position the vehicle on a two-post lift.
• Disconnect the battery.
• Remove:
  • the engine cover
  • the windscreen wiper arms
  • the scuttle half-grille
  • the windscreen wiper mechanism
  • the scoop under the scuttle panel grille

• Remove:
  • the bolts (1) from the turbocharger heat shield
  • the turbocharger heat shield
  • the oxygen sensors
  • the engine undertray
  • the front right-hand wheel
  • the front right-hand wheel arch liner
  • the front right-hand wheel driveshaft

• Remove:
  • the bolts (2) from the front right-hand wheel driveshaft relay bearing,
  • the front right-hand wheel driveshaft relay bearing,
  • the particle filter .

• Remove:
  • the catalytic converter heat shield bolts (3) ,
  • the catalytic converter heat shield.

• Remove:
  • the nut (4) and the bolts (5) of the catalytic converter mounting,
  • the catalytic converter mounting.

4X2 TRANSMISSION

• Remove the bolts (6) from the turbocharger cooling pipe.
• Move aside the turbocharger cooling pipe.
• Remove:
  • the catalytic converter mounting bracket bolts (7) from the cylinder block,
  • the catalytic converter mounting bracket bolts.

4X4 TRANSMISSION

• Remove the bolts (8) from the turbocharger cooling pipe.
• Move aside the turbocharger cooling pipe.
• Remove:
  • the bracket bolts (9) of the cylinder block transfer box and the transfer box,
  • the transfer box bracket.

II - OPERATION FOR REMOVAL OF PART CONCERNED

• Loosen the catalytic converter nuts (10) .
• Remove the catalytic converter studs of the turbocharger using a roller-type stud removal tool.

• Remove:
  • the catalytic converter bracket nuts (11) ,
  • the catalytic converter half-clips (12) .
• Move the catalytic converter towards the rear of the vehicle.

• Remove:
  • the catalytic converter on the right-hand side of the vehicle,
  • the seal between the catalytic converter and the turbocharger.

REFITTING

I - REFITTING PREPARATION OPERATION

• Clean and degrease the bearing faces of:
  • on the turbocharger,
  • on the catalytic converter in case of reuse,
  • of the particle filter,
  • of the silencer.
• Always replace:
  • the catalytic converter studs,
  • the catalytic converter nuts,
  • the seal between the catalytic converter and the turbocharger,
  • the seal between the catalytic converter and the particle filter,
  • the seal between the particle filter and the silencer,
  • the catalytic converter mounting nut.

II - REFITTING OPERATION FOR PART CONCERNED

• Refit:
  • the catalytic converter on the brackets,
  • the new seal between the turbocharger and the catalytic converter,
  • the new catalytic converter studs onto the turbocharger.
• Torque tighten the studs of the catalytic converter on the turbocharger (15 N.m) using a roller-type stud removal tool.
• Refit the new catalytic converter nuts on the turbocharger.
• Torque tighten the catalytic converter nuts on the turbocharger (21 N.m).
• Refit:
  • the catalytic converter half-clamps on the catalytic converter,
  • the catalytic converter bracket nuts.
• Torque tighten the catalytic converter bracket nuts (21 N.m).

4X2 TRANSMISSION

• Refit:
  • the catalytic converter mounting bracket,
  • the catalytic converter mounting bracket bolts on the cylinder blocks.
• Torque tighten the catalytic converter mounting bracket bolts on the cylinder block (50 N.m).
• Refit the turbocharger cooling pipe bolts.
• Torque tighten the turbocharger cooling pipe bolts (10 N.m).

4X4 TRANSMISSION

• Refit:
  • the transfer box bracket,
  • the transfer box bracket bolts on the cylinder block and the transfer box.
• Torque tighten:
  • the transfer box bracket bolts on the transfer box (48 N.m).
  • The transfer box bracket bolts on the cylinder block (50 N.m).
• Refit the turbocharger cooling pipe bolts.
• Torque tighten the turbocharger cooling pipe bolts (10 N.m).

• Refit:
  • the catalytic converter mounting,
  • the new catalytic converter mounting nut,
  • the bolts of the catalytic converter mounting.
• Torque tighten:
  • the catalytic converter mounting nut (51 N.m),
  • the catalytic converter (mounting bolts51 N.m).
• Refit:
  • the catalytic converter heat shield,
  • the catalytic converter heat shield bolts.
• Torque tighten the catalytic converter heat shield bolts (6 N.m).
• Refit:
  • the seal between the catalytic converter and the particle filter,
  • the particle filter,
  • the front right-hand wheel driveshaft relay bearing,
  • the front right-hand wheel driveshaft relay bearing bolts.
• Torque tighten the front right-hand wheel driveshaft relay bearing bolts (44 N.m).
• Refit:
  • the front right-hand wheel driveshaft
  • the front right-hand wheel arch liner
  • the front right-hand wheel
  • the engine undertray
  • the oxygen sensors
  • the turbocharger heat shield
  • the turbocharger heat shield bolts.
• Torque tighten the turbocharger heat shield bolts7 (N.m).
• Refit:
  • the scoop under the scuttle panel grille
  • the windscreen wiper mechanism
  • the scuttle half-grille
  • the windscreen wiper arms
  • the engine cover.
• Connect the battery.

2TR

REMOVAL

I - OPERATION FOR REMOVAL OF PART CONCERNED

• Position the vehicle on a two-post lift .
• Remove the engine undertray.

II - OPERATION FOR REMOVAL OF PART CONCERNED

• Remove the catalytic converter bracket nuts (1) on the connector pipe.

• Remove:
  • the silencer bracket nuts (2) on the catalytic converter,
  • the catalytic converter,
  • the seal between the connector pipe and the catalytic converter,
  • the seal between the catalytic converter and the silencer.

REFITTING

I - REFITTING PREPARATION OPERATION

• Always replace the seals.

II - REFITTING OPERATION FOR PART CONCERNED

• Refit:
  • the catalytic converter on the connector pipe with a new seal,
  • the catalytic converter bracket nuts on the connector pipe.
  • the catalytic converter on the silencer with a new seal,
  • the silencer bracket nuts on the catalytic converter.
• Torque tighten:
  • the catalytic converter bracket nuts on the connector pipe (45 N.m),
  • the silencer bracket nuts on the catalytic converter (45 N.m).

III - FINAL OPERATION.

• Refit the engine undertray.