32 41 433 Removing and installing/replacing ARS expansion hose part 4 (vehicles with N63 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.

Do not draw off hydraulic fluid (risk of contamination).

Close off line connections with seal plug 32 1 270 .

Recycling:

Catch and dispose of hydraulic fluid in a suitable container.

IMPORTANT: Pressure line and connections must be closed off with suitable plugs 32 1 270 immediately after removal!

ARS expansion hose part 4 overview:

ARS EXPANSION HOSE LINES REFERENCE CHART

1	Line 1
2	Line 2
3	Line 3

Fig 1: Identifying ARS Expansion Hose Lines

Courtesy of BMW OF NORTH AMERICA, INC.

Removing line 1:

Necessary preliminary tasks:

Lower FRONT AXLE SUPPORT

Release screws (1) from line flange in engine compartment.

Replace sealing ring.

Tightening torque 37 13 8AZ .

Fig 2: Identifying Engine Compartment Flange Line Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) from holder of oil cooler line over front axle carrier.

Release holder in front axle carrier (see arrow) of pressure line (2).

Fig 3: Releasing Front Axle Carrier Holder Of Pressure Line

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw connection (1) on T-piece.

Tightening torque 37 13 5AZ .

Feed out line through wheel arch.

Fig 4: Removing ARS Expansion Hose Line From Wheel Arch

Courtesy of BMW OF NORTH AMERICA, INC.

Removing line 2:

Necessary preliminary tasks:

Remove UNDERBODY PROTECTION
Release ACTIVE STABILIZER from front axle carrier and tie up
Remove front pressure line from active stabilizer
Remove ARS EXPANSION HOSE PART 3

Release both nuts (1) from line holder.

Release screw connection (2) and remove line.

Tightening torque 37 13 5AZ .

Fig 5: Identifying ARS Expansion Hose Line Holder Nut And Screw Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Removing line 3:

Necessary preliminary tasks:

Remove UNDERBODY PROTECTION
Remove ACTIVE STABILIZER from front axle carrier and hang up
Remove front pressure line from active stabilizer
Remove ARS EXPANSION HOSE PART 3

Unfasten screw fitting (1).

Tightening torque 37 13 5AZ .

Fig 6: Identifying ARS Expansion Hose Line Screw Fitting

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) on line holder.

Feed out line upward to remove.

Fig 7: Identifying ARS Expansion Hose Line Holder Screw

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

When assembling, make sure that in succession only the sealing plugs of the line to be fitted are removed.

When fitting lines, do not tilt connectors (sealing rings!) and connect fully before screwing.

Do not replace sealing rings on hydraulic lines.

Replace affected line if sealing ring is damaged.

After installation:

Fill and bleed HYDRAULIC SYSTEM
Check line connections for leaks
Carry out INITIAL DYNAMIC DRIVE OPERATION