32 41 311 Replacing suction line for hydraulic steering (vehicles with N55 engine)

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. 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 hydraulic lines with plugs.

Recycling:

Catch and dispose of hydraulic fluid in a suitable expansion tank.

Necessary preliminary tasks:

Draw off and dispose of hydraulic fluid from oil reservoir
Remove front UNDERBODY PROTECTION
Remove rear left CHARGE-AIR DUCT

Detach OIL RESERVOIR from console/body.

Unfasten hose clamp (1).

Detach suction line from fluid reservoir.

Installation note:

Marks on fluid reservoir and suction line must match up.

Replace hose clamp.

Fig 1: Identifying Oil Reservoir And Hose Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Expose suction line up to connection on power steering pump.

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

Installation note:

Replace hose clamp.

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

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

Fig 2: Identifying Hose Clamp And Suction Line Marking

Courtesy of BMW OF NORTH AMERICA, INC.

After installation:

Fill and bleed hydraulic system. See BLEEDING POWER STEERING UNIT or BLEEDING POWER STEERING (VEHICLES WITH DYNAMIC DRIVE) .
Check line connections for tightness