13 53 332 Removing and installing/replacing feed line (N20 hybrid drive)

Special tools required:

WARNING: High-voltage system - danger to life
Compliance with the following points is mandatory before beginning work:

Observe SAFETY INFORMATION for working with electric vehicles.

WARNING: Disconnect NEGATIVE BATTERY TERMINAL (risk of fire due to short circuit on removal).
Electric fuel pump starts up automatically when door is opened!
Carry out installation work on fuel system only with coolant temperature below 40°C.

Wear safety goggles.

Attention!

Adhere to conditions of absolute cleanliness when carrying out repair work on the high-pressure fuel system!

Introduced contaminants can cause malfunctions in the system!

Do not allow any dirt particles or foreign bodies to get into the system.
Remove all traces of contamination before removing lines or separate components.
Use only lint-free cloths.
Seal all fuel system openings with protective caps or plugs.

Attention!

Ignition coils must not be contaminated by fuel.

The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail!

Cover ignition coil with suitable means.

Recycling:

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel in a suitable container.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

Remove ACOUSTIC COVER
Remove PRESSURE LINE .

Removal:

Loosen connector (1) from clamps.

Unlock and release clamp (2).

Thread out wiring harness (3) and place to side.

Fig 1: Identifying Feed Line Connector, Wiring Harness And Clamp

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Loosen wiring harness (1) from the holder (2).

Lift out cable clip (3).

Fig 2: Identifying Feed Line Wiring Harness, Holder And Cable Clip

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Unlock and release line (1).

Unlock and release fuel line (2).

Release bolt (3) at rear of cylinder head.

Fig 3: Identifying Lines And Bolt

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Seal fuel lines with special tools (1) 13 5 161 and (2) 13 5 162 .

Fig 4: Closing-Off Fuel Lines Using Special Tools

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Slacken nut (1).

Release the feed line from the clamp (2), thread out toward the top and remove.

Fig 5: Identifying Feed Line Clamp And Nut

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Installation:

Insert feed line and secure to the bracket (2).

Tighten nut (1).

Tightening torque 13 53 2AZ .

Fig 6: Identifying Feed Line Bracket And Nut

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Connect and lock fuel line (2).

Fuel line (2) must audibly engage.

Tighten screw (3).

Tightening torque 13 53 3AZ .

Connect and lock line (1).

Line (1) must audibly engage.

Fig 7: Identifying Lines And Bolt

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Feed in and install the cable clip (3).

Secure wiring harness (1) to holder (2).

Fig 8: Identifying Feed Line Wiring Harness, Holder And Cable Clip

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Secure connector (1) to clamps.

Feed in and install wiring harness (3).

Lock clamp (2).

Fig 9: Identifying Feed Line Connector, Wiring Harness And Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Install PRESSURE LINE .
Install ACOUSTIC COVER .
Check fuel system for leak tightness.