General note
Note. The fuel pumps have different hose connections and must not be confused. The connections should be marked for identification when removing. In order that the connections do not fall in the fuel tank, they should be secured using tie-wraps.
The following overview is used as an orientation for connecting fuel pumps
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
Note. If the tank must be opened for emptying, disconnect all connections.
Installation Location
1. Open filler flap.
2. Fold rear seat forwards.
3. Fold up the retaining brackets of the (right and left) seat-belt buckles. To do so, loosen the four fastening screws and fold up the bracket with the seat-belt buckle. Do not use the fastening screws again.
4. Undo the caps (figure shows both). To do so, cut out the carpeted floor along the perforated lines using a carpet knife and fold it over. Then unscrew the four fastening nuts and remove the lid.
5. Empty the fuel tank if this has not already been done or if the fuel level in the fuel tank is very low. > Draining and filling fuel
| 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.
6. Carefully remove the fuel supply -1- at the relevant connection unit (right connection unit here) and loosen the two disconnection points -2 and 3-. Also remove line (not shown here) in vehicles with auxiliary heating (auxiliary heater). Do the same at the left connection unit. Disconnect all connections on the connection unit. see scheme 151
7. Open the relevant cap with the key T10202 and lift up the connection unit (cap).