Fuel Tank, Draining When More Than 3/4 Full
Special tools and workshop equipment required
- Fuel Extractor VAS5190A: VAS5190
- Fuel Extraction Unit: VAS5190A for E 85 - fuel.
-- Open the fuel filler door.
-- Clean the area around the fuel filler neck.
-- Remove the cap -1- for the fuel filler neck.
-- Attach the ground wire from the Fuel Extraction Unit to a bare area on the body.
-- Remove the cone piece -2- from the shaft piece -1- on the : VAS5190 .
-- Attach insulating tape -arrow- to the hose at a distance -a- from the end of the suction hose.
- The distance -a- is 900 mm.
-- Attach the shaft piece -1- from the : VAS5190 to the fuel tank filler tube and hold it tight.
-- Slide the suction hose from the Fuel Extraction Unit into the fuel tank until the previously made mark -arrow- meets the filler neck -2-.
-- Drain the fuel tank as much as possible through the filler neck.
A valve -1- is located in the fuel tank on the lower end of the filler neck. It must not be damaged by the suction hose. Only slide the hose in as far as the mark that was made earlier -arrow-.
Do not use force to remove the suction hose it if gets stuck on the check valve.
In this case, remove the fuel delivery unit and manually hold the check valve open. When doing this, make sure the arm does not come in contact with the fuel.
-- Carefully remove the suction hose.
There is a risk of destroying the fuel pump if it runs dry.
Never let the fuel pump run >>dry<<.
When no more fuel can be extracted, the fuel tank is only emptied enough so that the sensor flange can be opened safely.
When working on the fuel delivery unit or on the Fuel Gauge Sensor --, proceed as follows. Refer to FUEL TANK, DRAINING WHEN LESS THAN .
Risk of the fuel tank exploding when starting the fuel pump.
Severe injuries and burns are possible.
- After installing a new or completely empty fuel tank, immediately fill with at least 5 liters of fuel.