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

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. 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. See 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (M57T2) , 17 11 035 REMOVING AND INSTALLING/RENEWING FAN COWL WITH ELECTRIC FAN (N63) or 17 11 035 REMOVING AND INSTALLING/REPLACING FAN COWL WITH ELECTRIC FAN (N55) .
Remove heat exchanger from front axle carrier . See 17 22 010 REMOVING AND INSTALLING/REPLACING GEARBOX OIL COOLER FOR AUTOMATIC TRANSMISSION (N63, S63) or 17 22 010 REMOVING AND INSTALLING/REPLACING HEAT EXCHANGER FOR AUTOMATIC TRANSMISSION (M57T2, N54) and tie up

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

Installation:

Check rubber mounting of radiator box for correct seating.

Fig 1: Removing Radiator Box From Engine Support

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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 Pressure Line Distance

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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:

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 Bolts 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 Bolt And Lugs
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If necessary, remove line holder (1).

Installation:

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:

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:

Replace damaged lower section.

Tightening torque 37 14 25AZ .

Fig 8: Identifying Holder Lower Section And Screw

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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:

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 Screws Of Pressure Lines

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After installation:

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