37 13... Removing and installing/replacing pressure lines (front) for oscillating motor/front axle

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2014 BMW X6, 2013 BMW X6, 2012 BMW X6, 2011 BMW X6, and 2010 BMW X6. 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.

Recycling:

Catch and dispose of hydraulic fluid in a suitable container.

Necessary preliminary tasks:

Remove FRONT WHEELS
Remove FRONT UNDERBODY PROTECTION
Remove RIGHT WHEEL ARCH COVER
Remove STEERING GEAR COVER AT TOP RIGHT
Remove RADIATOR AIR DUCT
Remove both brake air ducts with holder
Remove fan cowl
Remove heat exchanger from front axle carrier and tie up

Remove radiator box from engine carrier, extend out, press upwards and support with workshop jack.

Installation note:

Check rubber mounting of radiator box for correct seating.

Fig 1: Supporting Radiator Box With Workshop Jack

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IMPORTANT: Risk of damage!
First adjust minimum distance (A) = 3 mm between pressure line (1) and oscillating motor (2).
-> M57T0p/ N52/ N54/ N62:
Then adjust pressure line (3) with minimum distance (B) = 8 mm to pressure line (1).
-> N63/ S63:
Then adjust pressure line (3) with minimum distance (B) = 5 mm to pressure line (1).

Fig 2: Identifying Distance Between Control Line And Oscillating Motor

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Mark installation position of pressure lines to oscillating motor.

Release banjo bolts (1) and remove pressure lines (2) from oscillating motor.

Seal pressure lines (2) and connections of oscillating motor with suitable sealing plugs.

Installation note:

Carry over identification to new component.

Pressure lines are protected against being mixed up by different thread diameters on the oscillating motor connection.

Tightening torque 37 14 18AZ .

Fig 3: Identifying Banjo Nuts And Pressure Lines

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Release screws (1).

Tightening torque 37 14 20AZ .

Fig 4: Identifying Screws

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IMPORTANT: To remove the risk of mix-up after removal of the pressure lines at the holders, observe the following:

Holder, direction of travel, left: Stud bolt (1) arranged virtually centrally on the holder
Holder, direction of travel, right: Stud bolt (1) arranged off-center to the front of the holder
Align holders as pictured by way of additional lugs (2); both lugs point in direction of travel to right

Fig 5: Identifying Stud Bolts And Lugs

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If necessary, remove line holder (1).

Installation note:

Check seating of line holder, correct if necessary.

Fig 6: Identifying Line Holder

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Release screw (1) and unclip holder lower section (2) with decoupler.

Installation note:

Replace damaged lower section.

Tightening torque 37 14 25AZ .

Fig 7: Identifying Screw And Holder Lower Section

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Release screw (1) and unclip holder lower section (2) with decoupler.

Installation note:

Replace damaged lower section.

Tightening torque 37 14 25AZ .

Fig 8: Identifying Screw And Holder Lower Section

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For vehicles with production date up to 10/2008:

Release banjo bolts (1).

Seal pressure lines with suitable sealing plugs.

Remove pressure lines.

Installation note:

Pressure lines are protected against being mixed up by different thread diameters.

Hydraulic lines are not permitted to contact each other or adjoining components.

Tightening torque 37 14 15AZ .

Fig 9: Identifying Banjo Bolts

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For vehicles with production date from 10/2008:

Release screws (1) and (2) of block screw connections.

Seal pressure lines with suitable sealing plugs.

Remove pressure lines.

Tightening torque 37 14 27AZ .

Fig 10: Identifying Block Screw Connections Screws

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After installation:

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