16 00 005 Draining and Filling Fuel Tank

Draining And Filling Fuel Tank


CAUTION:
Observe relative country safety legislation and regulations!
Ensure adequate ventilation in the place of work!
Connect exhaust extraction unit to exhaust tailpipe.
The electric fuel pump must not operate without fuel! After completing repairs and before starting engine for first time, fill fuel tank through fuel filler pipe with mm. 5 ltr. fuel.
Do not damage non-return flap when pulling out extraction hose


Drawing off fuel:
Start engine and allow to run. Electric fuel delivery pump runs. This pumps the fuel through the suction jet pump and the tank expansion line from the left to the right side of the fuel tank.


NOTE: Fuel can be drawn off from the left and right tank halves through the fuel filler pipe down to a small residual amount. This residual amount is drawn off after removal of the sensors for the fuel gauge (right/left).







Slide extraction hose of extractor unit into filler pipe, turning hose slightly if necessary.

Insertion length:
130 cm all except E53
150 cm E53

Draw off fuel with extractor unit as far as possible.
Follow the fuel drawing-off procedure at the fuel gauge in the instrument cluster.

Drawing off residual fuel quantity:


CAUTION:
Ensure the vehicle interior is adequately ventilated.
Catch dripping fuel in a suitable container.
Remove sensor for fuel gauge (right).
Remove sensor for fuel gauge (left).
Draw off residual fuel quantity through installation openings.







Fuel filling:
Slide extraction hose of extractor unit, 40 cm into filler pipe.
Fill fuel from extractor unit.







Drawing off after fault in suction jet pump:
Draw off right half of tank completely through filler pipe.
Remove sensor for fuel gauge (left).
Insert extraction hose through sensor opening in tank, fuel (also residual quantity) can be drawn off.