32 41 060 Removing and installing or replacing power steering vane pump (N51, N52, N53)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. 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 may 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 intake filter housing . See 13 71 000 REMOVING AND INSTALLING/REPLACING INTAKE FILTER HOUSING (N51) or 13 72 001 REPLACING AIR FILTER ELEMENT (N52/N52K/N53) .
Remove belt pulley .
Remove front underbody protection . See 51 47 490 REMOVING AND INSTALLING / REPLACING FRONT UNDERBODY PROTECTION .
Remove radiator seal.

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

Installation:

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

Fig 1: Identifying Hose Clamp And Suction Line

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolt (1) and remove bracket with refrigerant line.

Release screws (2).

Installation:

Replace aluminum screws.

Observe screwing sequence!

Fig 2: Identifying Bolt For Bracket

Courtesy of BMW OF NORTH AMERICA, INC.

Release banjo bolt (1) and disconnect pressure line.

Installation:

Replace all sealing rings (D).

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

Tightening torque, see 32 41 11AZ and 32 41 8AZ in 32 41 PUMP AND OIL SUPPLY .

Fig 3: Identifying Banjo Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolts (2) and remove vane pump towards bottom.

Installation:

Replace aluminum screws.

Observe screwing sequence!

Screwing 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, see 32 41 6AZ in 32 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, see 32 41 6AZ in 32 41 PUMP AND OIL SUPPLY .

After installation:

Fill and bleed hydraulic system
Check pipe connections for leaks