32 41 060 Removing And Installing Vane Pump (N62, N62TU) For Power Steering (From 10/2003)

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Seal off pipe connections with plugs.

Necessary preliminary tasks:

Draw off and dispose off hydraulic fluid from fluid reservoir
Remove drive belt . See 11 28 010 REPLACING ALTERNATOR DRIVE BELT (N62/N62TU) .
Remove front assembly underside protection . See 51 47 490 REMOVING AND INSTALLING / REPLACING FRONT UNDERBODY PROTECTION .

Release hose clamp and detach suction line (1) from vane pump.

Installation:

Align suction line (1) by way of marking to connection on vane pump.

Release nut and disconnect pressure line (2) from vane pump.

Installation:

Replace sealing ring.

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

Tightening torque. See STEERING AND WHEEL ALIGNMENT - TIGHTENING TORQUES - ALPINA .

Fig 1: Identifying Pressure Line And Suction Line

Courtesy of BMW OF NORTH AMERICA, INC.

Variant (A) - build date up to 05/2004:

Release screws (1, 2).

Tightening torque. See STEERING AND WHEEL ALIGNMENT - TIGHTENING TORQUES - ALPINA .

Remove vane pump.

Variant (B) - build date from 05/2004:

Release bolt (1) and nut (2).

Remove vane pump.

Installation:

Replace self-locking nut.

Tightening torque. See STEERING AND WHEEL ALIGNMENT - TIGHTENING TORQUES - ALPINA .

Fig 2: Identifying Vane Pump Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Fill and bleed hydraulic system . See 32 13 006 BLEEDING POWER STEERING UNIT or 32 13 006 BLEEDING POWER STEERING (VERSION WITH DYNAMIC DRIVE) .
Check pipe connections for leaks