Power Steering Fluid Cooler: Service and Repair

17 11 370 Removing and installing/replacing cooling loop for hydraulic steering (N54, N57) 740i, 730d, 740d





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





Important!
When working on the oil and cooling circuits, 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 fan cowl
^ After completing this operation, check fluid level in power steering fluid reservoir.





Release screws (1) on left and right from cover (3).

Tightening torque 17 10 1AZ.

Release screws (2) behind sealing lip.

Tightening torque 17 10 1AZ.

Lift out cover (3).





Remove retaining rings (1).

Unlock lines (2) and detach from cooling coil.

Press in catches (3) and pull cooling coil upwards.

Important!
Catch and dispose of emerging oil.

Installation:
Reinstall retaining rings.





Release lock (1) in direction of arrow.

Lift out oil cooling coil (2).





Reassemble the vehicle.

Check hydraulic steering for leaks.