32 41 430 Replacing ARS expansion hose part 1 (from hydraulic pump to expansion hose) (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.

Special tools required:

32 1 270

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 collecting vessel.

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

Necessary preliminary work:

Remove FAN COWL with electric fan
Lower FRONT AXLE SUPPORT

Release screws (1) from flange.

Tightening torque 37 13 8AZ .

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

Tightening torque 32 41 12AZ .

Fig 1: Releasing Holder

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Release holder (1) on front axle support on right.

Tightening torque 32 41 12AZ .

Fig 2: Identifying Holder On Front Axle Support

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Undo screws (1) on rear line clamp on engine.

Fig 3: Identifying Screws On Rear Line Clamp

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Undo nut (2) behind vane pump on transmission oil sump.

Fig 4: Identifying Nut Transmission Oil Sump

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Unfasten plug connection (1) and disconnect.

Release hose clamp (2) and detach intake pipe from vane pump.

Undo screws (3) and pull expandable hose off vane pump.

Tightening torque 32 41 13AZ .

Release screws (4).

Tightening torque 32 41 14AZ .

Installation note:

Replace sealing rings.

Replace hose clamp (2).

Align intake pipe by way of "P" marking to connection on vane pump.

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

Remove expandable hose towards rear (transmission end)

Fig 5: Identifying Plug Connection, Hose Clamp And Screws

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.

After installation:

Carry out START-UP DYNAMIC DRIVE OPERATION
Check line connections for tightness