32 41 090 Removing and installing (replacing) hydraulic pump for Dynamic Drive (vehicles with N63 engine)

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

When replacing vane pump:

OIL RESERVOIR must be replaced in event of metal abrasion, sluggish pump shaft or increased dirt contamination!

The filter integrated in the oil reservoir can only absorb a limited amount of foreign particles. If the filter clogs, the hydraulic system can no longer be sufficiently protected.

Metal abrasion is perceived in the oil reservoir as metallically glittering hydraulic fluid.

Replacement of the oil reservoir due to a leak (e.g. at the hose connections) is only required with unavoidable high penetrations of dirt.

WARNING:

DANGER OF POISONING if oil is ingested/absorbed through the skin!

DANGER OF INJURY if oil comes into contact with eyes and skin!

IMPORTANT:

Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.

Do not draw off hydraulic fluid (risk of contamination).

Necessary preliminary tasks:

Release the ACTIVE ANTI-ROLL BAR from front axle support
Release PRESSURE LINES at the anti-roll bar and tie to one side
Mark position of ELECTROMECHANICAL POWER STEERING BOX relative to front axle support, then remove
Remove BELT PULLEY
Release the ARS RETURN LINE PART 2 at the front right line flange and place to one side

Release screw (4).

Tightening torque 32 41 14AZ .

Unfasten plug connection (1) and disconnect.

Undo screws (3) and pull expansion hose off vane pump.

Tightening torque 32 41 13AZ .

Release hose clamp (2) and detach intake pipe from vane pump.

Installation note:

Replace hose clamp (2).

Align the intake pipe to the marking on the vane pump.

Make sure hydraulic lines are laid without tension and with sufficient distance to adjoining components.

Fig 1: Identifying Plug Connection, Hose Clamp And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Undo screws (1, 2) and remove the vane pump.

Tightening torque 32 41 9AZ .

Installation note:

Replace screws.

Make sure screws are installed in correct positions.

Screw (1) M10x110
Screw (2) M10x130

Fig 2: Identifying Screws
Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

If necessary, carry out INITIAL DYNAMIC DRIVE OPERATION
Check pipe connections for leaks