Fuel Tank: Locations

Fuel Tank With Attachments, Component Overview - Vehicles With 6-cylinder Engine And A6 Allroad

WARNING: Fire hazard. When working on the fuel system DO NOT smoke, work near heaters or have anything in the area that can ignite the fuel or fumes.

NOTE: The fuel filler neck with expansion tank can be exchanged separately.







1 Bolt M8 x 28 with attached washer
- 23 Nm (17 ft lb)
2 Speed nut
- For heat shield
- Must be securely fastened
3 Heat shield
- For fuel tank
4 Carrier panel
5 Strap
- Note installation position
6 Return line
- From engine
- Mark line before removal
- Observe direction of arrow
- Attach at right-front of fuel tank
7 Vent line
- Front part
- To Evaporative Emissions (EVAP) canister purge regulator valve -N80-
- Attached to upper part of fuel tank
- Remains attached when removing tank
8 Fuel supply line
- From fuel filter
- To fuel rail
- Mark line before removal
- Flow of fuel to and from tank -arrow-
- Located in right front
9 2 Nm (18 in. lb)
10 Heat shield
- For fuel filler neck
11 Vent line
- Rear part
- To Evaporative Emissions (EVAP) canister
- Attached to upper part of fuel tank
- Remains attached when removing fuel tank
12 Bolt M8 x 28 with attached washer
- 25 Nm (18 ft lb)
- Used to fasten fuel filler neck and Ground (GND) wire -item 18-
13 Overflow return hose
14 Fuel filler cap
15 Seal
- Replace if necessary
16 Retaining ring
17 Rubber cup
18 Ground connection
- Installation position/checking procedure, See Fig. 1.
- Mount terminal with bolt (item -12-) for fuel filler neck
- After installing, measure resistance using multimeter (Fluke 83 or equivalent) between metal ring of fuel filler neck and bare metal part of body. Specified value: approx. 0 Ohm
19 Fuel filler neck with expansion chamber
- Can be replaced separately
20 Vent line
- To EVAP canister.
21 Fuel tank

Fig. 1 . Installation position of Ground wire







NOTE: Check installation position with fuel tank or fuel filler neck removed.

- Route and connect Ground wire as shown (arrow).
- Ensure that harness connector for Ground (GND) connection is properly seated on metal ring (Ground clamp) on fuel filler neck.
- Check if contact terminal (tongue) at fastening hole is properly locked in.







- Hold terminal tongue -1- with bolt -2- to fuel filler neck.

CAUTION:
After installing the expansion tank, use ohmmeter to check the electrical connection between metal (Ground clamp) ring on the fuel filler neck and bare metal part (Ground (GND) on Body.
- Specification: approx. 0 ohm