Evaporative Emission Control Canister: Service and Repair

WM 202519 Removing and installing carbon canister on DFI engines

Technical values





Preliminary work

1. Raise the vehicle. => Lifting the vehicle
2. Remove rear right wheel. => 440519 Removing and installing wheel - section on "Removing".
3. Remove wheel housing liner. => 536919 Removing and installing rear wheel housing liner - section on "Removing"

General warning notes

Group 20 - Fuel supply, control

WARNING

Toxic substances

- Danger of poisoning or suffocation

-> Ventilate the work area well.
-> Never ingest or inhale.
-> Read specific information on the Hazard Sheet.
-> Wear personal protective gear.

WARNING

Highly inflammable or explosive materials

- Danger of fire or explosion

-> Avoid contact with hot parts or sources of ignition.
-> Use suction to remove ignitable vapours.
-> Attach warning sign in a clearly visible position.

Information

- Absorb any escaping fuel using a suitable binding material or a cloth.

- Cloths which have absorbed fuel must be disposed of according to the applicable national laws.

- The fuel system must be depressurised before starting work on it.

- Only work on the fuel system in well-ventilated rooms.

- Any seals which have been removed must always be replaced.

- Do not use any sealant containing silicone or silicone spray when the injection system is open. Traces of silicone drawn in by the engine are not combusted and damage the oxygen sensors.

Information

Component overview





Active carbon filter without leakage diagnosis pump









Active carbon filter with leakage diagnosis pump






Removing carbon canister

CAUTION

- Lines can become kinked or can crack.

-> Do not leave carbon canister hanging freely on the lines.
-> Secure carbon canister with wire.

1. Loosen fastening screws (2x M6) and M6 nut.
2. Carefully disconnect all lines on the carbon canister at the plug connections.
2.1. Also remove the vacuum line on vehicles with a leakage diagnosis pump.
3. Remove wiring harness at the back of the carbon canister.
4. Remove carbon canister.

Installing carbon canister

1. Secure wiring harness at the back of the carbon canister.
2. Fit all lines on the carbon canister at the plug connections.
3. Secure carbon canister with M6 fastening screws and M6 nut. => Tightening torque: 9 Nm (6.5 ftlb.)

Subsequent work

1. Install the right wheel housing liner. => 536919 Removing and installing rear wheel housing liner - section on "Installing"
2. Fit rear wheel and tighten to the prescribed torque => Tightening torque: 160 Nm (118 ftlb.). => 440519 Removing and installing wheel - section on "Installing"