Emptying fuel tank, four-wheel drive, engine codes BJB, BLS, BSU — VW

Emptying fuel tank, four-wheel drive, engine codes BJB, BLS, BSU
Emptying fuel tank when fuel pump is intact
Anchor
.
Emptying fuel tank when fuel pump is defective
Anchor
.
Emptying fuel tank when fuel pump is intact
Special tools and workshop equipment required
Fuel extractor
VAS 5190
Adapter for fuel extraction
VAS 5190 /3
Vehicle diagnosis, testing and information system
VAS 5051B
or
vehicle diagnosis, testing and information system
VAS 5052
Note
Observe safety precautions
Chapter
.
Observe rules for cleanliness
Chapter
.
WARNING
Fuel supply line is pressurised. Wear eye protection and protective clothing to avoid injury and skin contact. Before loosening hose connections, wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.
Connect
fuel extractor
VAS 5190
earth wire to vehicle earth.
Note
Press in securing ring to release fuel lines.
Pull off supply line
2
and catch escaping fuel with a cloth.
Connect
fuel extractor
VAS 5190
with
adapter for fuel extractor
VAS 5190 /3
to fuel supply line.
With ignition switched off, connect
vehicle diagnosis, testing and information system
VAS 5051B
or
vehicle diagnosis and service information system
VAS 5052
.
Switch ignition on.
Remove cap from fuel filler neck.
Perform function
“Draining fuel system”
in
“Guided functions”
.
When the fuel tank is empty,
»stop«
the function to prevent the fuel pump from running
»dry«
.
Operate shut-off tap on
fuel extractor
VAS 5190
, until the fuel tank is emptied.
Note
The fuel pump is being activated when engine is not running.
Note
Fuel tank must be drained completely to remove it.
Emptying fuel tank when fuel pump is defective
Note
Observe safety precautions
Chapter
.
Observe rules for cleanliness
Chapter
.
Emptying fuel tank if it is more than
3
/
4
full:
Remove cone piece
2
from shaft
1
of
fuel extractor
VAS 5190
.
At a distance of
a
= 1700 mm from end of extraction hose, use insulating tape to mark
arrow
the hose of the
fuel extractor
VAS 5190
.
Open tank flap.
Remove cap from fuel filler neck.
Push extraction hose into fuel tank until marking on hose coincides with filler neck.
Note
The non-return valve in the fuel tank must not be damaged by the extraction hose. You must therefore push the hose into the filler neck only as far as the marking.
Drain fuel tank as far as possible.
Pull extraction hose out carefully.
Note
When no more fuel is extracted, the tank is emptied just sufficiently to allow the connecting hose
1
to be pulled off. Proceed as follows to extract more fuel.
Anchor
Emptying fuel tank if it is less than
3
/
4
full:
WARNING
Fuel tank must not be more than
3
/
4
full.
Fuel supply line is pressurised. Wear eye protection and protective clothing to avoid injury and skin contact. Before loosening hose connections, wrap a cloth around the connection. Then release pressure by carefully pulling hose off connection.
Loosen screw-type clip
2
and pull connecting hose
1
off fuel tank.
Caution
The fuel tank union contains the non-return valve flap, which must not be damaged by the suction hose.
Carefully insert suction hose of
fuel extractor
VAS 5190
as far as possible into fuel tank. Extract fuel.
Note
In order to extract the remaining fuel from the 2nd chamber, the fuel tank has to be lowered and
fuel gauge sender 2
G169
lifted up
Chapter
.