Unscrew cover -1-.
1 - fuel pump connector; 2 - fuel supply sensor connector; 3 - fuel hose for supplying fuel to the pump; 4 - compensation hose of the fuel tank.
Disconnect connectors -1- and -2-. To disconnect, squeeze the locking tabs.
Mark fuel hoses -3- and -4- with adhesive tape and detach from fuel gauge, releasing hose clamps.
Caution: The fuel system is pressurized, so disconnect the hose slowly and wipe off the escaping fuel with a rag.
Carefully unscrew union nut -5-. At service stations, a special tool BMW 161020 is used for this. You can also get by with a wooden rod or a large screwdriver.
Raise the fuel gauge, move aside and remove. Place a rag underneath and wipe off any escaping fuel.
Removing the left fuel gauge
Unscrew cover -2- (Figure W - 2066).
2 - fuel supply sensor connector; 3 - fuel return hose; fuel compensation hose.
Disconnect connector -2-. To disconnect, squeeze the locking tabs.
Mark fuel hoses -3- and -4- with adhesive tape and detach from fuel gauge, releasing hose clamps.
Attention: The fuel system is under pressure, so disconnect the hose slowly and wipe the fuel that flows out with a rag.
Carefully unscrew union nut -5-. At service stations, a special tool BMW 161020 is used for this. You can also get by with a wooden rod or a large screwdriver.
Raise the fuel gauge, move aside and remove. Place a rag underneath and wipe off any escaping fuel.
Installation
Attention: Be sure to replace the union nut, as well as the gasket of the fuel reserve sensor.
Right fuel gauge
When installing, press dipstick -2- against fuel pump housing. Before the final installation, make sure that the fuel reserve sensor is in the correct position by rocking it in different directions. The dipstick -2- must be perpendicular to the bottom of the fuel tank, the tank has a recess in the appropriate place. In addition, the float -1- must move freely.
Left fuel gauge
When installing, press the dipstick up and slightly to the right against the spring force, see figure. Insert the fuel reserve sensor vertically in the required position: The dipstick must stand vertically and rest against the bottom of the fuel tank.
Attention: The fuel line of the fuel tank is pressed against the bottom of the tank. The dipstick should be in the recess in the bottom of the tank. The float lever must move freely.
Align the fuel gauge by turning it, the rib on the flange should face the mark on the fuel tank. Install a new union nut and tighten it with a tightening torque of 50 Nm.
Connect the fuel hoses according to the markings and secure with new clamps.
Connect and secure connectors.
Fit the cover and tighten, paying attention to the correct position of the gasket. Connect battery.
Check the operation of the fuel reserve indicator on the dashboard.