fuel pump AUDI A4 1997 B5 / 1.G Quattro Fuel Syst

20-86


- Unscrew union nut using wrench 3217.
- Take cover flange and sealing ring out of the fuel tank opening.

If wiring OK - Check wiring between flange and fuel pump for continuity.
- Fuel pump faulty, replace Page 20
-91
.
- Fuel supply unit, installing Page 20
-96
.
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gine
)
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20-87

Fuel pump delivery volume, checking


Vehicles with all wheel drive and 1.8 ltr. turbo
or 2.8 ltr. engine

Required special tools, testing equipment
and auxiliary equipment

VAG1348/3A Remote control with VAG1348/3-
2 adaptor cable
Calibrated measuring container

Test requirements
Battery Voltage: 12 Volts minimum
Fuel filter OK
Ignition switched OFF.
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)
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20-90

All vehicles

- Operate remote control for 15 seconds.

Keep button depressed continuously

*) Minimum supply quantity cm
3/15 s
**)
Voltage across fuel pump with engine off and pump running (approx. 2
Volts less than Battery Voltage). - Compare delivered quantity to specified value.
Pa
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gine
)
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20-91

Fuel supply unit, removing and
installing


Vehicles with all wheel drive and 1.8 ltr. turbo
or 2.8 ltr. engine
Observe Safety measures Page 20
-1 .
Observe Rules of cleanliness Page 20
-4 .

Required special tools, testing equipment
and auxiliary equipment

FM 3000 fuel cart (or equivalent)
3217 Union nut wrench
3307 fuel pump wrench
VAG1275 Hose clamp pliers
Pa
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)
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20-94


- Insert 3307 wrench through fuel tank opening and place over the inner
section of the surge housing.
-
Using 3307 wrench, turn inner section of surge housing approx. 15 to
the left up to the stop and withdraw fuel pump assembly complete with
the inner housing section.
Pa
ge 43 of 55 Fuel su
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g (vehicles with all wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
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20-95

Cover flange and surge housing inner
section, pre-assembling
If cover flange and supply unit were separated

- Pre-assemble parts Page 20
-78
.

Note:
Install a toothed washer beneath each nut.
Angle position, cover flange to inner section of surge housing: 10
- Press together clamps for supply line (between pump and cover flange)
with VAG1275 pliers.
- Attach wiring to fuel pump.
M4: 1.5 Nm M5: 2 Nm
- Attach wiring with fuel-resistant cable ties.
Pa
ge 44 of 55 Fuel su
pp
ly system, servicin
g (vehicles with all wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
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20-96

Installing
Installation is performed in the reverse of
removal, when installing, note the following:

CAUTION!

Always refer to the latest parts catalog to
ensure that you use original equipment fuel
hose clamps.

- Install surge housing inner section, supply hose
and cover flange in the fuel tank.

Note:
For clarity, the surge housing outer and inner sections are shown in the
illustration without the fuel tank. - Place inner section of surge housing into outer section of surge
housing in tank such that notch -1- on inner section of surge housing
matches mark -2- on outer section of surge housing.
The inner section of the surge housing can be audibly pressed
downward.
- Attach 3307 pump wrench and turn surge housing inner section to the
right approx. 15 (up to the stop). Notch -1- will then be in front of mark -3- (bayonet closure)
Pa
ge 45 of 55 Fuel su
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ly system, servicin
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gine
)
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pair&id=AUDI.B5.GE04.20.3

20-104


Fuel pump, removing and installing

Vehicles with all wheel drive and 1.8 ltr. turbo or
2.8 ltr. engine
Observe Safety measures Page 20
-1 .
Observe Rules of cleanliness Page 20-4 .
Note:
The following steps describe fuel pump
installation. Removal is the reverse of the
installation steps.
Fuel pump lines -1- may not be kinked. Replace
kinked fuel lines and immediately dispose of old
parts.
- Replace O-ring -3-.
- Install fuel supply unit Page 20
-91
.
- Install sender for fuel gauge Page 20
-101
.
Pa
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gine
)
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20-106


Fig. 1 Fuel pump, installing
- Turn fuel pump in direction of filler neck, into fuel tank, approx. 1 turn to
the left-arrows-.
Pa
ge 55 of 55 Fuel su
pp
ly system, servicin
g (vehicles with all wheel drive and 1.8 ltr. turbo or 2.8 ltr. en
gine
)
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE04.20.3