Fuel Tank, Emptying

Fuel Tank, Emptying

A. Emptying a fuel tank more than 3/4 filled
B. Emptying a fuel tank less than 3/4 filled

Special tools, testers and auxiliary items required







- Fuel siphoning unit VAS 5190

Work sequence
Observe safety precautions.
Observe rules for cleanliness.

- Check whether a coded radio is installed. If necessary, obtain radio anti-theft coding.
- Switch off ignition and all electrical consumers.
- Disconnect battery Ground (GND) strap, See Electrical Equipment, - Repair Group 27.

CAUTION: Secure Ground (GND) wire of fuel siphon device VAS 5190 to vehicle Ground (GND).

A. Emptying a fuel tank more than 3/4 filled
- Remove fuel filler cap from fuel filler tube.







- Pull cone piece -2- from shaft piece -1- of fuel siphoning unit VAS 5190.
- Using insulating tape, apply a mark - arrow - on suction hose.
- Dimension - a -: 920 mm







- Screw shaft piece -1- of fuel siphoning unit VAS 5190 on to fuel filler tube of fuel tank.
- Slide suction hose into fuel tank until mark applied earlier - arrow - stands at shaft piece.
- Empty fuel tank as much as possible via fuel filler neck Fuel siphoning unit operating instructions
- Carefully pull out suction hose.
- Remove Fuel Supply Sensor 3 -G237.
- Siphon remaining fuel out of left and right fuel tank chambers through sensor opening.

B. Emptying a fuel tank less than 3/4 filled
- Remove Fuel Supply Sensor 3 -G237.







- Using insulating tape, apply a mark - arrow - on suction hose.
- Dimension - a -: 830 mm
- Slide suction hose through sensor opening only as far into right or left fuel tank chamber until mark - arrow - applied is aligned with threaded connector flange
I. right chamber
II. left chamber
- Siphon fuel from right or left chamber of fuel tank.
- Install Fuel Supply Sensor 3 -G237 again.