Remove the coolant return line for the exhaust turbocharger

Preliminary work 

• Refer to REMOVING THE ACOUSTIC COVER .
• Refer to REMOVING THE COVER ON LEFT AND RIGHT IN THE ENGINE COMPARTMENT AT THE TOP .
• Refer to REMOVING BOTH FRONT-END STRUTS .
• Refer to REMOVING FRONT CROSS CONNECTION .
• Refer to REMOVING THE REAR TOP CROSS CONNECTION .
• Refer to REMOVING THE FAN COWL .
• Refer to REMOVING THE INTAKE FILTER HOUSING (TENSION STRUT ON SHOCK TOWER REMOVED) .
• Refer to REMOVING TOP CLEAN AIR PIPE .
• Refer to REMOVING BOTTOM CLEAN AIR PIPE .
• Refer to REMOVING THE FRONT UNDERBODY PROTECTION OR FRONT THRUST FIELD .
• Refer to REMOVING THE UNDERBODY PROTECTION OF THE STEERING GEAR AND THRUST FIELD RESPECTIVELY .
• Refer to REMOVING THE STIFFENING PLATE .
• Refer to DRAINING THE COOLANT FROM THE HIGH-TEMPERATURE COOLING SYSTEM .
• Refer to CONNECTING THE COOLANT LINES FOR THE HIGH-TEMPERATURE COOLANT CIRCUIT .

• Unlock and release the coolant return line for the exhaust turbocharger (1).
• Catch and dispose of leakage coolant.

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• Loosen screw (1).

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• Keep the set of special tools 2 470 546  ready.

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• Position special tool 2 470 546  on the screw (1).

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• Release the screw (1) using the special tool 2 470 546 

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• Guide out and remove the screw (1) using the special tool 2 470 546. 

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• Feed out the coolant return line (2) for the exhaust turbocharger and set it aside.
• Feed out the oil feed line (1) for the exhaust turbocharger and set it aside.
• Feed out and remove the coolant return line (2) for the exhaust turbocharger.

  Courtesy of BMW OF NORTH AMERICA, INC.