32 41 037 Removing and installing/replacing power steering pump for power steering gear with Dynamic Drive (N54): Notes

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WARNING: DANGER OF POISONING if oil is ingested/absorbed through the skin!
RISK 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 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 acoustic cover
Remove BELT PULLEY
Remove left charge air line
Remove STEERING GEAR COVER AT TOP

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

Version with active front steering: Disconnect plug connection (2).

Release banjo bolt (4) and detach pressure line for Dynamic Drive from power steering pump.

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

Installation:

Replace all sealing rings.

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

The identification (P) of the suction line and the rib of the power steering pump serve as a rough aid to alignment.

Fig 1: Identifying Hose Clamp, Banjo Bolt And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque 32 41 4AZ (for power steering).

Tightening torque 32 41 9AZ (for Dynamic Drive).

Remove idler pulley (1).

Release bolts (2) and remove power steering pump towards top.

Tightening torque 32 41 3AZ .

Fig 2: Identifying Idler Pulley With Bolts

Courtesy of BMW OF NORTH AMERICA, INC.