Removing Carbon Canister

Removing Carbon Canister

Preliminary work
1. Take up the vehicle at the jacking points provided using a platform lift.
2. Open filler flap.
3. Screw the tank cap down. Then remove the rubber sleeve around the tank filler neck, loosen the 2 M6 x 20 fastening screws and remove the ground cable.







4. Remove right rear wheel.
5. Remove right rear wheel housing liner.

















General warning notes

Fuel supply, control

DANGER:
Danger of poisoning from fuels.
- Gasoline is toxic.
- Inhaling vapours can cause irritation of the mucous membranes and eyes.
- It can be carcinogenic. It represents a serious risk to health when inhaled, touched or swallowed over longer periods.
- Only work on the fuel system in well-ventilated rooms.
- Wear protective gloves that are fuel-resistant.
- Wear a breathing mask with active charcoal filter; do not breathe in any fuel vapours.
- Ensure that there is adequate ventilation and extract all fuel vapours.
- Before opening the fuel lines or fuel hoses, relieve the fuel pressure.
- Collect escaping fuel, absorb it if necessary with a suitable binding material and dispose of properly.
- Pay attention to cleanliness when working on the fuel system.

DANGER:
Danger of fire from fuel.
- Keep clear of ignition sources.
- Do not smoke.
- Disconnect battery.
- Danger of fire due to naked flames and sparks, e.g. during welding or grinding work.
- Danger of fire due to escaping fuel, e.g. on hot engine components or due to electrostatic charge. Allow engine to cool down.
- Secure the vehicle, e.g. with a warning sign.
- Change any clothing soaked with fuel immediately.
- In case of fire, use CO2 or dry powder fire extinguishers.

NOTE:
- The ignition must be switched off when working on the fuel system.
- 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.

Information

Component information

ATTENTION:
Risk of damage.
- There is a risk of leaks if the overflow line on the fuel filler neck is above the valve.
- Make sure that the line runs below the valve.







NOTE:
- The repair procedure may vary depending on engine type and country equipment. This relates in particular to components in the right wheel housing.
- The description relates to ORVR vehicles.

The following exploded drawing shows the attachment of the tank filler neck and carbon canister in the right wheel housing.







Removing carbon canister

ATTENTION:
Risk of damage.
- Lines can become kinked or can crack.
- Never leave carbon canister hanging freely on the lines.
- A second person should hold the carbon canister during removal.

1. Loosen the 5 fastening screws on the carbon canister and the two on the degassing tank in the right wheel housing -arrows-.







NOTE: In USA vehicles, the rubber hose -2- of the leak diagnosis pump is extremely tight. If the hose is pulled, the connection piece can break off at the leak diagnosis pump.







2. Carefully remove the 2 electric connectors -3- on the carbon canister and on the leak diagnosis pump and the hose on the connection piece -2- of the leak diagnosis pump (USA). There is always a risk of damage. Then, disconnect plastic line -1-.







3. Cut through the tie-wraps of the ground cable on the carbon canister and take the carbon canister out of the wheel housing. Replace tie-wraps.







4. Remove hose connection on the degassing tank.







ATTENTION:
Risk of damage
- Lines can become kinked or can crack.
- Never leave carbon canister hanging freely on the lines.
- A second person should hold the carbon canister during removal.

5. Pull fuel filler neck and degassing tank out of the wheel housing and secure with a piece of wire -arrow- (figure shows degassing tank with carbon canister).