Information
Installation Location
Scheme 53
1 - Fuel pump, left
2 - Connection to fuel filter
3 - Fuel supply line connection
4 - Connection to fuel filter
5 - Fuel pump, right
6 - Fuel supply line connection
7 - Connection to fuel pressure regulator
8 - Connection point for left fuel pump and pressure regulator
9 - Sucking jet pump of left pump
10 - Sucking jet pump of right pump
| WARNING | 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.
| WARNING | 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 CO 2 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.
1. Remove carbon canister and place it on a clean surface. > 202521 Removing carbon canister
Scheme 54
1 - Degassing tank
2 - Filler neck
3 - Pressure control valve
4 - Carbon canister
5 - Leakage diagnosis pump
Scheme 55
> Installation position of leakage diagnosis pump. (Scheme 54)
Scheme 56
1. Loosen three fastening screws on plastic support for pressure control valve. -Arrows-. (Scheme 55)
Scheme 57
To remove the top fastening screw, carefully press the pressure control valve hose aside using a screwdriver and screw out the fastening screw. --> Pressure control valve. (Scheme 56)
Scheme 58
2. Turn the pressure control valve to the side and remove the three fastening screws on the leakage diagnosis pump. --> Pressure control valve and leakage diagnosis pump mount. (Scheme 57)
Scheme 59
3. Carefully lever the leakage diagnosis pump out of the bracket on the active carbon filter using a screwdriver. --> Levering out leakage diagnosis pump. (Scheme 58)
Scheme 60
4. Carefully lever the leakage diagnosis pump out of the rubber flange on the housing using a screwdriver. --> Rubber flange. (Scheme 59)
Scheme 61
5. Pull off the air hose. --> Pulling off air hose. (Scheme 60)
Scheme 62
6. If the rubber flange slips out of the housing and remains on the connection piece of the leakage diagnosis pump while you are removing the leakage diagnosis pump, check the rubber flange for damage and insert it back flush into the carbon canister housing if it is OK. --> Rubber flange --> Inserted rubber flange. (Scheme 61), (Scheme 62).
