BMW 7 Owners & Service Manuals
BMW 7 Series (F01/F02) 2008-2015 Service Manual / Cooling System / Engine Radiator With Attachment / Removing And Installing/Replacing Cooling Coil For Power Steering (N63, N74)

BMW 7 Series: Removing And Installing/Replacing Cooling Coil For Power Steering (N63, N74)

WARNING: Danger of scalding! Only perform this work after engine has cooled down.

IMPORTANT: When working on the oil and cooling circuit, protect the alternator against dirt/contaminants.

Cover alternator with suitable materials.

Failure to comply with this procedure may result in an alternator malfunction.

Necessary preliminary tasks

  • Remove A/C CONDENSER
  • After completing this operation, check fluid level in hydraulic steering fluid reservoir.

Remove circlips (1).

Unlock lines (2) and detach from cooling coil.

Press in catches (3) and pull cooling coil together with module carrier upwards.

IMPORTANT: Catch and dispose of emerging oil.

Installation:

Reinstall circlips.

Engine Radiator With Attachment
Fig. 38: Identifying Pressure Lines With Catches And Circlips

Release module carrier (2) in direction of arrow.

Lift out cooling coil (1) together with module carrier (2).

Installation: When replacing cooling coil, modify module carrier on left and right.

Engine Radiator With Attachment
Fig. 39: Releasing Module Carrier Upwards

Reassemble the vehicle.

Check hydraulic steering for leaks.

REMOVING AND INSTALLING/REPLACING COOLING LOOP FOR HYDRAULIC STEERING (ALPINA B7 N63)

WARNING: Risk of scalding! Only perform this repair work after engine has cooled down.

IMPORTANT: When carrying out repair work on the oil and cooling circuit, protect the alternator against dirt contamination.

Cover alternator with suitable materials.

Failure to comply with this procedure may result in an alternator malfunction.

Necessary preliminary work

  • Remove RADIATOR.
  • Remove RADIATOR for charge air cooler.
  • Remove AIR CONDITIONING CONDENSER

The cooling loop for the hydraulic steering is fitted at the front in the radiator package.

Engine Radiator With Attachment
Fig. 40: Identifying Cooling Loops For Hydraulic Steering In Radiator Package

Remove circlips.

Unlock lines (1) and detach from cooling loop.

Installation note: Fit the angled line at the top.

All lines must engage audibly and be secured with the circlip against slipping!

IMPORTANT: Catch and dispose of emerging oil.

Engine Radiator With Attachment
Fig. 41: Identifying Cooling Lines

Release screw (1).

Tightening torque 17 10 9AZ.

Feed out and remove the cooling loop.

Engine Radiator With Attachment
Fig. 42: Identifying Cooling Loop Mounting Screw

Reassemble the vehicle.

AFTER COMPLETING THIS REPAIR WORK, CHECK OIL LEVEL IN OIL RESERVOIR OF HYDRAULIC STEERING.

If Dynamic Drive is fitted, execute COMMISSIONING FOR DYNAMIC DRIVE.

Check hydraulic steering for leak tightness.

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