32 41 037 Removing And Installing Power Steering Pump (N62, N62TU) For Power Steering Gear With Dynamic Drive (From 10/2003)

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

NOTE: When replacing power steering pump:
Fluid reservoir must be replaced in event of metal abrasion, sluggish pump shaft or increased wear!
The filter integrated in the fluid 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 fluid reservoir as metallically glittering hydraulic fluid.
It is only necessary to replace the fluid reservoir because of leaks (e.g. at hose connections) only in the event of the unavoidably high ingress of dirt.

Necessary preliminary tasks:

Draw off and dispose of hydraulic fluid from fluid reservoir
Remove drive belt . See 11 28 010 REPLACING ALTERNATOR DRIVE BELT (N62/N62TU) .
Remove active stabilizer from front axle carrier . See 37 11 010 REMOVING AND INSTALLING/REPLACING FRONT ACTIVE STABILIZER .
Remove steering gear cover at side

Unscrew nut (1).

Installation:

Replace self-locking nut.

Tightening torque 32 41 5AZ . See STEERING AND WHEEL ALIGNMENT - TIGHTENING TORQUES .

Release banjo bolt and disconnect Dynamic Drive pressure line (2) with bracket from power steering pump.

Release banjo bolt and disconnect power steering pressure line (3) from power steering pump.

Installation:

Replace all sealing rings.

Fig 1: Identifying Dynamic Drive Pressure Line With Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tightening torque 32 41 3AZ . See STEERING AND WHEEL ALIGNMENT - TIGHTENING TORQUES .

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

Installation:

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

Release screw (2).

Tightening torque 32 41 1AZ . See STEERING AND WHEEL ALIGNMENT - TIGHTENING TORQUES .

Fig 2: Locating Suction Line

Courtesy of BMW OF NORTH AMERICA, INC.

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

Release screws (1, 2).

Tightening torque 32 41 1AZ . See STEERING AND WHEEL ALIGNMENT - TIGHTENING TORQUES .

Remove power steering pump (3).

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

Release bolt (1) and nut (2).

Remove power steering pump (3).

Installation:

Replace self-locking nut.

Tightening torque 32 41 1AZ . See STEERING AND WHEEL ALIGNMENT - TIGHTENING TORQUES .

Fig 3: Identifying Power Steering Pump Nut And Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Fill and bleed hydraulic system . See 32 13 006 BLEEDING POWER STEERING (VERSION WITH DYNAMIC DRIVE) or 32 13 006 BLEEDING POWER STEERING UNIT .
Check pipe connections for leaks
If necessary, carry out initial Dynamic Drive operation . See 37 10 001 INITIAL OPERATION WITH TEST RUN OF DYNAMIC DRIVE .