32 41 060 Removing And Installing (Replacing) Vane Pump For Hydraulic Steering Gear (N55)

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NOTE: When replacing power steering pump:
OIL RESERVOIR must be replaced in event of metal abrasion, sluggish pump shaft or increased wear!
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.
Replacement of the oil reservoir due to a leak (e.g. at the hose connections) is only required with unavoidable high penetrations of dirt.

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.

IMPORTANT: Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic.
Jointing torque and angle of rotation must be observed without fail (risk of damage)!

Necessary preliminary tasks:

Draw off and dispose of hydraulic fluid from oil reservoir.
Remove front UNDERBODY PROTECTION .
Remove front stiffening plate (F12 all-wheel drive vehicle).
Remove CHARGE-AIR DUCT .
Remove FAN COWL .
Remove power steering pump BELT PULLEY .

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

Installation note:

Replace hose clamp.

Align suction line by way of marking (2) to power steering pump connection marking.

Fig 1: Hose Clamp And Suction Line Marking

Courtesy of BMW OF NORTH AMERICA, INC.

Unfasten plug connection (1) and disconnect.

Release screw (2).

Tightening torque: 32 41 9AZ .

Installation note:

Replace aluminum screws .

Observe screwing sequence!

Fig 2: Plug Connection And Screw

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Release screws (1).

Tightening torque: 32 41 9AZ .

Installation note:

Replace aluminum screws .

Observe screwing sequence.

Fig 3: Screws

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Turn power steering pump to one side, release screw (1) and detach pressure line (2).

Tightening torque: 32 41 6AZ .

Lift out power steering pump.

Installation note:

Replace all sealing rings.

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

Fig 4: Screw And Pressure Line

Courtesy of BMW OF NORTH AMERICA, INC.

Screw-fastening sequence:

Secure power steering pump with screws.
Tighten side screw to 2 Nm.
Tighten front screws to 2 Nm.
Tighten down front screws to jointing torque and angle of rotation.
Tightening torque: 32 41 9AZ .
Release screw at side and check screw fastening points for gap freedom.
Tighten down side screws to jointing torque and angle of rotation.
Tightening torque: 32 41 9AZ .

After installation:

Fill and bleed HYDRAULIC SYSTEM .
Check line connections for leaks.