Emptying fuel tank, front-wheel drive, engine codes CAYD, CAYE, CFHC, CFHF, CLCA, CUUB, CUUC, CUUD, CUUE, CUUF — VW

Emptying fuel tank, front-wheel drive, engine codes CAYD, CAYE, CFHC, CFHF, CLCA, CUUB, CUUC, CUUD, CUUE, CUUF
Emptying fuel tank when fuel pump is intact
Anchor
.
Emptying fuel tank if defective pump is more than
3
/
4
full
Anchor
Emptying fuel tank if defective pump is less than
3
/
4
full
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
Note
If the
fuel extraction unit
VAS 5190
is still fitted with the extraction hose with a solid tip, the extraction hose must be replaced with the version with a screwed tip.
Unscrew tip
1
from extraction hose of fuel extraction unit
VAS 5190
.
Screw
fuel extraction adapter
VAS 5190 /2
from
fuel extraction adapter set
VAS 5190 /10
onto extraction hose.
WARNING
Danger of burning from very hot fuel!
In extreme cases, the fuel lines and the fuel can reach a temperature of 100 °C. Allow the fuel to cool down before disconnecting the lines - danger of scalding.
Wear protective gloves.
Wear eye protection.
Risk of injury due to highly-pressurised fuel!
To release pressure in fuel system, place clean cloth around connection and carefully undo connection.
Pull off fuel supply line
2
Chapter
“
Separating plug-in connectors
”
Connect
fuel extractor
VAS 5190
with
adapter for fuel extractor
VAS 5190 /3
to fuel supply line.
Remove cap from fuel filler neck.
Switch ignition on.
Connect
vehicle diagnosis, testing and information system
VAS 5051B
or
vehicle diagnosis, testing and information system
VAS 5052 A
Carry out in the guided function
“Empty fuel system”
.
Note
The fuel pumps are now actuated. The
vehicle diagnostic tester
shows the progress of the drainage.
Open shut-off tap on
fuel extractor
VAS 5190
until fuel tank is emptied.
When the fuel tank is empty, stop the function to prevent the fuel pump from running
»dry«
.
Emptying fuel tank if pump is defective and fuel tank is more than
3
/
4
full
Special tools and workshop equipment required
Fuel extractor
VAS 5190
Caution
Secure earth wire of
fuel extractor
VAS 5190
to a bare metal part of the body.
Procedure
Remove cone piece
2
from shaft
1
of
fuel extractor
VAS 5190
.
Make a mark
arrow
on hose with insulating tape at distance
a
= 1700 mm from end of extraction hose.
Open tank flap.
Remove cap from fuel filler neck.
Note
A ball valve
2
is located at the bottom of the filler neck in the fuel tank
1
; it must not be damaged by the extraction hose
3
. Therefore push hose into filler neck only as far as marking
arrow
.
Screw shaft
1
of
fuel extractor
VAS 5190
onto fuel tank filler neck.
Push extraction hose into fuel tank until marking on hose
arrow
coincides with shaft end.
Drain fuel tank as far as possible.
Pull extraction hose out carefully.
Note
When no more fuel is extracted, the tank is emptied just enough for the sender flange to be opened without danger.
If fuel tank has to be drained fully, proceed as follows.
Emptying fuel tank if pump is defective and fuel tank is less than
3
/
4
full
Special tools and workshop equipment required
Union nut key
3217
Torque wrench (40... 200 Nm)
V.A.G 1332
Fuel extractor
VAS 5190
Adapter for fuel extraction
VAS 5190/3
Procedure
Remove fuel tank
Chapter
.
WARNING
Before opening hose connections wrap a cloth around the connection.
Release connector
arrow
and pull it off flange
1
.
Remove fuel lines
1
and
2
. To do this, press release buttons
Chapter
On vehicles with auxiliary heater, remove fuel lines
3
.
Unscrew union nut
1
using
union nut tool
3217
.
Raise sender flange.
Insert suction hose of
fuel extractor
VAS 5190
as far as possible into fuel tank. Extract fuel.
If fuel tank only needs to be drained, install sender flange again.