1353170 Removing and installing/replacing all pressure lines (N63): Recycling

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Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel in a suitable container.

Observe country-specific waste-disposal regulations.

NOTE:

Ignition coils must not be fouled by fuel!
The resistance of the silicone material is reduced significantly by contact with fuel, which may cause the ignition coil to fail! Cloths/rags must therefore be used to prevent fuel from getting into the spark plug slots!
Before installing ignition coils, clean spark plug slots with compressed air.
Make sure the spark plug slot is absolutely clean.

Necessary preliminary tasks:

Remove IGNITION COILS
Remove intercooler on left and right. See REMOVING AND INSTALLING/REPLACING RIGHT CHARGE AIR COOLER (N63) and REMOVING AND INSTALLING/REPLACING LEFT CHARGE AIR COOLER (N63) .
Partially remove WIRING HARNESS for engine
Partially remove WIRING HARNESS for injectors
Detach BATTERY POSITIVE LEAD from battery positive terminal, partially remove battery positive lead
Remove FLUID RESERVOIR for power steering
Remove suction line for power steering. See REPLACING SUCTION LINE FOR POWER STEERING (FROM CONNECTING PIECE TO VANE PUMP) and REPLACING SUCTION LINE FOR POWER STEERING (FROM FLUID RESERVOIR TO CONNECTING PIECE) .
Remove coolant EXPANSION TANK
Remove ELECTRONICS BOX
Remove WATER VALVE for heater/air conditioner and lay water hoses to one side
Detach tank vent line from tank venting valve and point of separation
Remove suspension cross-braces on left and right. See REMOVING AND INSTALLING/REPLACING LEFT (REAR) SUSPENSION CROSS-BRACE and REMOVING AND INSTALLING/REPLACING RIGHT (REAR) SUSPENSION CROSS-BRACE .
Remove ACOUSTIC INSULATION for bulkhead on left and right
Drain off AIR CONDITIONING SYSTEM

Release screw (1).

Tightening torque 64 53 3AZ .

Detach A/C line (2) and place to one side.

Replace sealing ring on A/C line.

Fig 1: Identifying A/C Line With Mounting Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Slacken nut (1).

Tightening torque 12 42 7AZ .

Remove battery positive lead (2) and place to one side.

Fig 2: Identifying Battery Positive Lead With Slack Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Clamp off fuel delivery line. Seal off fuel lines with special tools (1) 13 5 160 and (2) 13 5 162.

Catch and dispose of escaping fuel.

Fig 3: Sealing Off Fuel Lines With Special Tools (13 5 160 And 13 5 162)

Courtesy of BMW OF NORTH AMERICA, INC.

Removing high-pressure fuel line from injector to rail

NOTE: The following description applies to all pressure lines.
First release pressure line on rail to reduce existing fuel pressure if necessary. Fuel must not get into the spark plug slot. Then release pressure line on injector.

Release union nuts (1).

Disconnect pressure line (2).

Set down pressure lines in order.

Fig 4: Identifying High Pressure Fuel Lines With Union Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Secure injector against twisting with wrench (2).

Release union nut (1).

IMPORTANT: If several pressure lines are removed, ensure that each pressure line is reinstalled in its original location (cylinder).
Mark pressure lines.

Fig 5: Removing Union Nut Using Wrench

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: