32 41 037 Removing and installing/replacing power steering pump for power steering gear with Dynamic Drive (N62, N62TU)

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Danger to life!
Secure engine in installation position to prevent it from falling down. See 11 00 670 SECURING ENGINE IN INSTALLATION POSITION (N62, N62TU) .

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Seal off hydraulic lines 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.
Relieve tension on DRIVE BELT and remove from power steering pump belt pulley.
Remove intake silencer housing. See 13 71 000 REMOVING AND INSTALLING/REPLACING INTAKE FILTER HOUSING .
Remove front assembly underbody protection. See 51 47 490 REMOVING AND INSTALLING/REPLACING FRONT UNDERBODY PROTECTION .
Remove rear underbody protection. See 51 47 491 REMOVING AND INSTALLING/REPLACING REAR UNDERBODY PROTECTION .
Remove steering box cover on left.

Release banjo bolt (1) and remove Dynamic Drive pressure line from power steering pump. Release banjo bolt and disconnect hydraulic steering pressure line (3) from power steering pump. Slacken nut (2).

Tightening torque, 32 41 6AZ in 32 41 PUMP AND OIL SUPPLY

Remove Dynamic Drive pressure line holder.

Fig 1: Removing Dynamic Drive Pressure Line Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: Replace all sealing rings.

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

Tightening torque, see 32 41 3AZ in 32 41 PUMP AND OIL SUPPLY

Unfasten hose clamp (1). Detach feed line (2).

Installation note: Marks on lines must align.

Fig 2: Removing Feed Line

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (2).

Tightening torque, see 32 41 1AZ in 32 41 PUMP AND OIL SUPPLY

Version with active front steering: Disconnect plug connection (1).

Fig 3: Identifying Plug And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

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

Release screws (1, 2).

Tightening torque, see 32 41 1AZ in 32 41 PUMP AND OIL SUPPLY

Remove power steering pump (3) downwards.

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

Release bolt (1) and nut (2).

Tightening torque, see 32 41 1AZ in 32 41 PUMP AND OIL SUPPLY

Remove power steering pump (3) downwards.

Fig 4: Identifying Power Steering Pump, Bolt And Nut

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
Carry out steering angle sensor adjustment/adjustment for active front steering . See 32 10 005 Adjustment for active front steering .
If necessary, carry out initial Dynamic Drive operation . See 37 10 001 INITIAL OPERATION WITH TEST RUN OF DYNAMIC DRIVE .