BMW X5: Fuel Tank With Mounting

REPLACING LEFT OR RIGHT CLAMPING BAND FOR FUEL TANK

Necessary preliminary tasks:

• Remove underbody panelling.

IMPORTANT: Secure fuel tank against slipping and falling out.

Heavily support the fuel tank.

Release screws (1) and remove clamping band.

Installation:

Tightening torque.

REMOVING AND INSTALLING/REPLACING FUEL TANK

Recycling

Fuel escapes when fuel lines are detached. Have a suitable collecting container ready.

Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

IMPORTANT: Ensure adequate ventilation in the place of work! Avoid skin contact (wear gloves)!

After installation of fuel tank/prior to first engine start-up:

• Check ground connection at fuel filler neck to body for continuity. If necessary, clean contact surface between body and fuel filler pipe screw connection.
• Fill fuel tank with at least 5 liters of fuel.
• Check transfer function of suction jet pump.

Necessary preliminary tasks:

• Draw off fuel from fuel tank.
• Remove propeller shaft.
• Remove underbody panelling on left and right.
• Remove rear right wheel arch trim.

Release nuts (1) and remove holder (2).

Release hose clamp (1) and detach fuel filler hose in direction of arrow.

Installation:

Tightening torque 16 12 1AZ.

Unlock quick-release fastener (1) and detach vent line.

Detach vent line from holders (2).

Unlock fuel feed line at quick-release fastener (1) and disconnect.

IMPORTANT: Catch escaping fuel in a suitable container.

IMPORTANT: Secure fuel tank against slipping and falling out.

Heavily support the fuel tank.

Release screws (1) on clamping bands on left and right.

Installation:

Tightening torque 16 11 2AZ. Slacken nut (2).

Installation:

Tightening torque 16 11 2AZ.

IMPORTANT: Do not lead refuelling vent line through opening in body when lowering.

Lower fuel tank a little so that sensor units can be reached.

Disconnect plug connection (1).

Unlock and detach quick-connect couplings (2).

Disconnect plug connection (1).

Unlock and detach quick-connect couplings (2).

Lower fuel tank.

The following components must be modified when the fuel tank is replaced:

• Right sensor unit (1).
• Left sensor unit (2).
• Fuel feed line (3).
• If necessary, lines for independent heating.

REMOVING AND INSTALLING OR REPLACING FUEL FILLER PIPE

Recycling

Fuel escapes when fuel lines are detached. Have a suitable collecting container ready.

Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

IMPORTANT: Ensure adequate ventilation in the place of work! Avoid skin contact (wear gloves)!

Before starting the engine for the first time:

• Fill fuel tank with at least 5 liters of fuel.
• Check ground connection at fuel filler neck to body for continuity. If necessary, clean contact surface between body and fuel filler pipe screw connection.

Necessary preliminary tasks:

• Draw off fuel from fuel tank.
• Remove rear right wheel arch trim.
• Remove underbody panelling on right.

Unhook retaining strap (1) from tank flap.

Open cap and set to one side.

Fig. 3: Identifying Retaining Strap

Unfasten hose clip (1).

Installation:

Replace hose clip.

Tightening torque 16 12 1AZ.

Fig. 4: Identifying Hose Clip

Unlock quick-release fasteners (1) and disconnect vent hoses.

Release nuts (2) and (3).

Installation:

Check plastic nut (3), replace if necessary.

Tightening torque 16 12 2AZ.

Fig. 5: Identifying Quick-Release Fasteners And Nut

Unclip line holder (1).

Release nut (2) and remove fuel filler pipe.

Installation:

Check plastic nut (2), replace if necessary.

Tightening torque 16 12 2AZ.

REPLACING RUBBER SLEEVE BETWEEN FUEL FILLER PIPE AND FUEL TANK

Recycling

Fuel escapes when fuel lines are detached. Have a suitable collecting container ready.

Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

IMPORTANT: Ensure adequate ventilation in the place of work! Avoid skin contact (wear gloves)!

Before starting the engine for the first time:

• Fill fuel tank with at least 5 liters of fuel.

Necessary preliminary tasks:

• Draw off fuel from fuel tank.
• Remove underbody panelling on right.
• Remove rear right wheel arch trim.

Unclip line holder (1).

Slacken nut (2).

Installation:

Check plastic nut (2), replace if necessary.

Tightening torque 16 12 2AZ. Loosen hose clamps (1).

Detach rubber sleeve first from fuel filler pipe and then from fuel tank.

Installation:

Tightening torque 16 11 3AZ.

CHECKING FILLER CAP PRESSURE RELIEF VALVE

Special tools required:

• 13 3 010
• 16 1 171
• 16 1 172
• 16 1 173

Set pressure regulator on special tool 16 1 171. See 16 1 170 TESTER WITH TEST ADAPTER fully in "-" direction.

Connect special tool 16 1 171. See 16 1 170 TESTER WITH TEST ADAPTER via compressed air line (1) to workshop/garage compressed air system (8... 10 bar).

Select special tool 16 1 172 or 16 1 173.

Install filler cap on selected special tool (3).

NOTE: Only the absolute pressure is indicated in the display of the Diagnosis and Information System (DIS). The current ambient air pressure is already displayed without additional pressurization.

Check testing equipment for leaks!

Select "Measurement" function on Diagnosis and Information System (DIS).

Set measuring range according to pressure sensor to 0-3.5 bar.

Increase pressure by 0.2 bar with pressure regulator on special tool 16 1 171.

Using special tool 13 3 010.

Wait 60 secs.

Read off final pressure value and compare with starting pressure value.

Measurement Evaluation:

Pressure drop > 0.012 bar

Testing equipment leaking. Check connection points for leaks.

Check filler cap pressure relief!

Follow same test procedure as for "Checking testing equipment for leaks".

Increase pressure by 0.3 bar with pressure regulator on special tool 16 1 171.

Measurement evaluation:

Measurement Evaluation

Pressure drop > 0.012 bar

Filler cap pressure relief valve faulty. Replace filler cap.

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