32 41 060 Removing and installing (replacing) power steering vane pump (N52, N53)

WARNING: This page is about a different car, the 2010 BMW 528i, 2009 BMW 528i, and 2008 BMW 528i. However, it is still accessible from the selected car via links, so may be relevant.

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.
Close off pipe connections with plugs.

IMPORTANT: Aluminium-magnesium materials.
No steel screws/bolts mays be used due to the threat of electrochemical corrosion.
A magnesium crankcase requires aluminum screws/bolts exclusively.
Aluminum screws/bolts must be replaced each time they are released.
The end faces of aluminum screws/bolts are painted blue for the purposes of reliable identification.
Jointing torque and angle of rotation must be observed without fail (risk of damage).

Recycling:

Catch and dispose of hydraulic fluid in a suitable container.

Observe country-specific waste-disposal regulations

Necessary preliminary tasks:

Draw off and dispose of hydraulic fluid from fluid reservoir
Remove front underbody protection . See 51 47 490 REMOVING AND INSTALLING / REPLACING FRONT UNDERBODY PROTECTION .
Remove intake filter housing . See 13 71 000 REMOVING AND INSTALLING/REPLACING INTAKE FILTER HOUSING .
Remove belt pulley

Release screws (1).

Installation:

Replace aluminum screws.

Observe screwing sequence.

Fig 1: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

N52:

Release hose clamp (1) and detach suction line (2) from vane pump.

Installation:

Markings on suction line and vane pump connection must match up.

Release banjo bolt (4) and detach pressure line (3) from vane pump.

Fig 2: Identifying Hose Clamp And Suction Line With Pressure Line

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace all sealing rings.

Make sure pressure line is laid without tension and with sufficient spacing to adjoining components.

Tightening torque 32 41 3AZ . See 41 PUMP AND OIL SUPPLY .

N53:

Release hose clamp (1) and detach suction line (2) from vane pump.

Installation:

Markings (3) on suction line and vane pump connection must match up.

Release banjo bolt (4) and detach pressure line (5) from vane pump.

Fig 3: Identifying Hose Clamp, Banjo Bolt, Pressure Line And Suction Line

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace all sealing rings.

Make sure pressure line is laid without tension and with sufficient spacing to adjoining components.

Tightening torque 32 41 3AZ . See 41 PUMP AND OIL SUPPLY .

Release screws (1) and remove vane pump (2) towards bottom.

Installation:

Replace aluminum screws.

Observe screwing sequence.

Fig 4: Identifying Vane Pump And Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Screw-fastening sequence:

Secure vane pump with screws
Tighten side screws to 2 Nm
Tighten front screws to 2 Nm
Tighten down front screws to jointing torque and angle of rotation
Tightening torque 32 41 1AZ . See 41 PUMP AND OIL SUPPLY .
Release screws 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 1AZ . See 41 PUMP AND OIL SUPPLY .

After installation:

Fill and bleed hydraulic system or power steering (version with Dynamic Drive) .
Check pipe connections for leaks