11 72 194 Removing and Installing/Replacing Left Secondary Pipe (N73)

Necessary preliminary tasks: 

• Drain engine oil. See 00 00 610 SERVICE - ENGINE OIL
• Remove center of assembly partition wall. See 51 71 085 REMOVING AND INSTALLING CENTER OF ASSEMBLY COMPARTMENT BULKHEAD
• Remove reinforcement plate. See 31 10 010 REMOVING AND INSTALLING/REPLACING REINFORCEMENT PLATE
• Remove lower section of steering spindle. See 32 31 070 REMOVING AND INSTALLING/REPLACING LOWER SECTION OF STEERING SPINDLE

Disconnect air connection (1) on secondary valve.

Unscrew bolt (2).

Remove secondary valve (3).

Detach high-pressure line (4). See 13 53 175 REMOVING AND INSTALLING/REPLACING ALL PRESSURE LINES (N73)

Tightening torque: 13 53 2AZ . See13 53 FUEL INJECTION NOZZLES AND PIPES

Release screw (7) and place solenoid valve (5) to one side.

Unscrew bolt (8).

Release secondary pipe (9) and lay to one side.

Installation:

Fit secondary pipe and secondary valve without gaps.

Fig 1: Identifying Air Connection, Secondary Pipe And Solenoid Valve

Courtesy of BMW OF NORTH AMERICA, INC.

Detach fuel lines (1) from holder (2).

Press fuel line (1) downwards.

Fig 2: Identifying Fuel Lines And Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1), twist oil guide tube (2) and lift out.

Installation: 

Replace sealing ring on guide tube.

Apply light coat of oil to seal.

Tightening torque: 11 43 1AZ. See 11 43 GUIDE TUBE, DIPSTICK

Fig 3: Twisting Oil Guide Tube

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.