Renault Clio: Particle filter: Removal - Refitting

K9K, and 772

REMOVAL

I - REMOVAL PREPARATION OPERATION

• Position the vehicle on a two-post lift (see Vehicle: Towing and lifting) (MR 392, 02, Lifting equipment).
• Disconnect the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery).
• Remove the engine undertray.

II - OPERATION FOR REMOVAL OF PART CONCERNED

• Disconnect the blue connector from the upstream temperature sensor on the steering rack.
• Remove:
  • the downstream temperature sensor from its adapter on the exhaust pipe.
  • the temperature sensor between the catalytic converter and the particle filter,

• Remove the upstream pressure measurement connection (1) from its adapter bolted to the exhaust pipe.

• Remove the downstream pressure measurement connection (2) from its adapter bolted to the exhaust pipe.

WARNING

When removing the pipe, the adapter must be held using a lock wrench.

WARNING

The pressure measurement circuit must never be opened except at the pressure measurement adapters.

• Remove the connecting hose nuts on the catalytic pre-converter.
• Remove the particle filter rubber mounting bush bolts on the sub-frame.
• Cut the exhaust pipe at Area to be cut 1 using the (Mot. 1199-01) (see ) and (see 19B, Exhaust, Exhaust: Precautions for the repair, 19B-19).
• Remove the particle filter.
• If removing the particle filter, remove:
  • the upstream temperature sensor (see 19B, Exhaust, Particle filter temperature sensors: Removal - Refitting, 19B-62),
  • the connecting hose (see Connecting hose: Removal - Refitting).

REFITTING

I - REFITTING PREPARATION OPERATION

• Deburr the cut marks on the exhaust pipe and on the particle filter if it is to be re-used.

WARNING

When fitting the particle filter, be sure to pass the downstream pressure measurement connection behind the heat shield.

WARNING

Always replace any adapter that has been removed from the exhaust pipe.

Note:

It is essential to thoroughly clean the pressure faces at:

• the catalytic pre-converter - connecting hose connecting brackets,
• the particle filter - connecting hose connecting brackets.

• If replacing the particle filter, refit:
  • the upstream temperature sensor (see 19B, Exhaust, Particle filter temperature sensors: Removal - Refitting, 19B-62),
  • the connecting hose equipped with a new seal (see Connecting hose: Removal - Refitting).

II - REFITTING OPERATION FOR PART CONCERNED

• Refit the new seal between the catalytic pre-converter and the connecting hose.
• Fit:
  • the particle filter,
  • the sleeve.
• Refit:
  • the rubber mounting bush bolts on the sub-frame,
  • the connecting hose nuts on the catalytic pre-converter.
• Tighten the sleeve bolt.
• Coat the threadings of the upstream and downstream pressure measurement connections with ANTI-SEIZE COPPER GREASE or COPPER-ALUMINIUM LUBRICANT.
• Refit:
  • the downstream temperature sensor,
  • the temperature sensor between the catalytic converter and the particle filter,
  • the downstream pressure measurement connection on its adapter bolted to the exhaust pipe,
  • the upstream pressure measurement connection on its adapter bolted to the exhaust pipe.
• Connect the upstream temperature sensor connector.

III - FINAL OPERATION

• Connect the battery (see Battery: Removal - Refitting) (MR 392, 80A, Battery).
• Before starting the engine, use the Diagnostic tool to clear any faults stored by the injection computer.
• Refit the engine undertray.
• If replacing the particle filter, reinitialise the particle filter parameters (see Fault finding - Replacement of components) (MR 394, 13B, Diesel injection).

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