32 41 430 Replacing ARS expansion hose part 1 (from hydraulic pump to expansion hose) (vehicles with N54 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 front left CHARGE-AIR DUCT
Lower FRONT AXLE SUPPORT

Unlock return line on cooling loop and disconnect.

Fig 1: Identifying Return Line

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Release screws (1) from flange.

Tightening torque 37 13 8AZ .

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

Tightening torque 37 13 12AZ .

Fig 2: Releasing Holder

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

Tightening torque 32 41 12AZ .

Fig 3: Identifying Holder On Front Axle Support

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Release nuts (1) from rear line holder on engine.

Fig 4: Identifying Rear Line Holder And Nuts

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Disconnect plug (1) from oil level sensor and place to one side.

Release holder (2) on front axle support and lay pressure line to one side.

Tightening torque 32 41 12AZ .

Fig 5: Identifying Plug And Holder

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Disconnect plug (1) and release cable tie.

Release line holder (2) behind power steering pump.

Fig 6: Identifying Plug And Line Holder

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Disconnect plug (1) and lay wiring harness to one side.

Release pressure line (2).

Tightening torque 32 41 6AZ .

Release pressure line (3).

Tightening torque 32 41 13AZ .

Remove suction line (4).

Release bolts (5) from line holder.

Tightening torque 32 41 18AZ .

Remove expansion hose towards rear.

Installation note:

Replace sealing rings.

Replace hose clamp.

Fig 7: Identifying Plug, Pressure Lines, Suction Line, And Bolts

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IMPORTANT:

When assembling, make sure that in succession only the seal 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:

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