13 51 065 Removing and installing/replacing left high pressure pump (N63 hybrid)

WARNING: This page is about a different car, the 2011 BMW X6 and 2010 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: High-voltage system - danger to life!

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

DE-ENERGIZE THE HIGH-VOLTAGE SYSTEM
Observe SAFETY INSTRUCTIONS for handling with hybrid vehicles

WARNING: Observe warning on cylinder head cover.
Disconnect BATTERY NEGATIVE TERMINAL (risk of fire due to short-circuiting 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.

IMPORTANT: Wear full face guard and protective gloves.
Fuel can emerge spontaneously at high velocity when the high-pressure line is released!

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 pipes or individual components.
Use only fluff-free cloths.
Seal all fuel system openings with protective caps or plugs.

IMPORTANT: 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!
Cover ignition coil with suitable means.

Necessary preliminary tasks:

Remove FUEL FEED LINE
Remove HIGH-PRESSURE LINE from left high-pressure pump to rail.

Recycling:

Fuel escapes when fuel lines are detached.

Catch and dispose of escaping fuel.

Observe country-specific waste-disposal regulations.

IMPORTANT:

High-pressure pump can be pretensioned by camshaft cams!

Slightly slacken screws (1) of high pressure pump (2). If the high pressure pump is forced out, the engine will have to be turned to bring the camshafts to a different position.

Otherwise it will not be possible to install the high-pressure pump! Release screws (1).

Replace screws. Screws are coated with a screw locking agent.

The pump plunger can fall out when the high-pressure pump (2) is pulled out! Detach high-pressure pump (2) and remove.

Engine oil can emerge when pulling off the pump; have cloths ready.

Installation note:

Before installing the high pressure pump, the cam of the high pressure pump drive must be turned to BDC . To do this, twist the engine if necessary in the direction of engine rotation to the central bolt of the crankshaft.

Adhere to tightening/torque sequence.

Fig 1: Identifying High-Pressure Pump And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Lay depth gauge (1) flat on high pressure pump flange.

Turn engine at central bolt in direction of engine rotation until the depth gauge shows that the camshaft has reached the BDC position .

Fig 2: Using Depth Gauge On High Pressure Pump Flange

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Replace screws (1). Screws (1) are coated with sealant.

IMPORTANT: Pump plunger can fall out when high-pressure pump (2) is pulled out!

Detach high-pressure pump (2) and remove.

Engine oil can escape when pump is detached; have a cleaning cloth ready.

Installation note:

Before installing the high pressure pump, the cam of the high pressure pump drive must be turned to bottom dead center. To do this, twist the engine if necessary in the direction of engine rotation to the central bolt of the crankshaft.

Adhere to tightening/torque sequence.

Fig 3: Identifying High-Pressure Pump And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Replace sealing ring (1).

Clean contact surfaces.

Fig 4: Identifying Sealing Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Install high pressure pump (2).

Replace screws (1). Screws (1) are coated with sealing compound.

Installation note:

Provisionally fasten screws (1) on high pressure pump (2) and tighten alternately in 90° increments until final tightening, otherwise the piston may break as a result of tilting!

Tightening torque 13 51 1AZ .

Fig 5: Identifying High Pressure Pump With Mounting Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check fuel system for leaks.

Check function of DME.