13 53 332 Removing and installing/replacing feed line (N55 hybrid)

Special tools required:

WARNING: High-voltage system - danger to life!

The following points must be strictly observed prior to starting work :

Observe SAFETY INFORMATION for handling hybrid cars.

WARNING: Disconnect NEGATIVE BATTERY TERMINAL and NEGATIVE BATTERY TERMINAL OF AUXILIARY BATTERY (risk of fire caused by short circuit during dismantling).

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.

IMPORTANT: Adhere to conditions of absolute cleanliness when working 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 dirt before removing lines or separate components.
Use only fluff-free cloths.
Seal all fuel system openings with protective caps or plugs.

IMPORTANT: 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 INTAKE PLENUM .

Unlock and detach vacuum line (1) from the vacuum pump.

Unlock and pull off connector (2) from the high pressure pump and connector (3) from the oil temperature sensor.

Fig 1: Identifying Vacuum Line, High Pressure Pump And Oil Temperature Sensor Connectors

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) below cable channel (2).

Installation note:

Adhere to tightening/torque sequence.

Fig 2: Identifying Feed Line Cable Channel And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release fuel line (3) and seal with special tool (1) 13 5 160 .

Release nut (1) on high pressure pump.

Remove feed line (2).

Close off feed line and high pressure pump with a matching plug from set of special tools 32 1 270 .

Fig 3: Removing Fuel Line Using Special Tool (13 5 160)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Adhere to tightening/torque sequence.

First, fit feed line on high pressure pump and engine block only hand-tight . Do not connect fuel hose to the feed line yet.

Tighten screws (1) below the cable channel.

Tightening torque 13 53 10AZ .

Fig 4: Identifying Feed Line Cable Channel And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Tighten union nut (1) with special tool 13 5 020 .

Tightening torque 13 53 7AZ .

Re-connect fuel hose (3) to feed line.

Fig 5: Tightening Feed Line Union Nut Using Special Tool (13 5 020)

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fuel system for tightness.

Check function of DME.