32 41 037 Removing And Installing/Replacing Power Steering Pump For Hydraulic Steering Gear With Dynamic Drive (N63)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: When replacing power steering 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.
It is only necessary to replace the oil reservoir because of leaks (e.g. at hose connections) only in the event of the unavoidably high ingress of dirt.

IMPORTANT: If replacing the pump due to leaks on account of a pressed-out, clearly visible housing gasket (1) (green O-ring), this indicates that DYNAMIC DRIVE EXPANDABLE HOSE SECTION 1 is damaged.

This must therefore be replaced together with the pump!

Fig 1: Visible Housing Gasket

Courtesy of BMW OF NORTH AMERICA, INC.

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.
Seal off hydraulic lines with seal plugs.

Necessary preliminary work:

Draw off and dispose of hydraulic fluid from oil reservoir
Remove expansion tank
Remove WATER COOLER
Remove DRIVE BELT FOR GENERATOR

Disconnect plug connections (1) and (2).

Release hose clamp (3) and detach intake pipe from power steering pump.

Release union nut (4) and disconnect pressure line for hydraulic steering from power steering pump.

Tightening torque: 32 41 4AZ (for hydraulic steering).

Installation note:

Replace all sealing rings.

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

Align intake pipe by way of marking to connection on power steering pump.

Fig 2: Plug Connections, Hose Clamp And Union Nut

Courtesy of BMW OF NORTH AMERICA, INC.

Release banjo bolt (1).

Tightening torque: 32 41 3AZ .

Release nuts (2) and place expandable hose (3) to one side.

Fig 3: Expandable Hose And Banjo Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts (1) and remove holder (2) and power steering pump towards bottom.

Tightening torque: 32 41 3AZ

Fig 4: Holder And Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Fill and bleed hydraulic system . See PUMP AND OIL SUPPLY and BLEEDING POWER STEERING (VERSION WITH DYNAMIC DRIVE) .
Check line connections for leaks
If necessary, carry out INITIAL DYNAMIC DRIVE OPERATION