BMW X5: Removing And Installing/Replacing Thermostat Cartridge (N62TU/N52K)

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

Necessary preliminary tasks:

• Follow instructions for working on cooling system.
• Draining coolant.
• Remove fan cowl.

Unlock and detach coolant hose (1).

Release nuts and remove thermostat cartridge (2).

Installation:

• Clean contact faces.
• Check seals and replace if necessary.

Fig. 20: Identifying Coolant Hose And Thermostat Cartridge

REMOVING AND INSTALLING/REPLACING MODULE CARRIER (N52K)

Necessary preliminary tasks:

• Remove fan cowl with electric fan.
• Draining coolant.
• Remove coolant radiator.
• Draw off fluid from power steering

Installation:

Bleed power steering unit.

• Unlock hydraulic lines on cooling loop and disconnect
• Secure A/C condenser against damage and against falling down.

Press lock (1) and remove holder (2) downwards.

Illustration shows the left holder: The same procedure applies to the opposite side.

Installation:

Rubber mounts fall out easily, ensure correct installation position.

Remove module carrier (1) towards bottom.

When replacing module carrier:

Convert power steering cooling loop.

Add final details to vehicle.

Check system for leaks.

REMOVING AND INSTALLING/REPLACING COOLANT EXPANSION TANK (N62TU/N52K)

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

Necessary preliminary tasks:

• Follow instructions for working on cooling system.
• Drain coolant.

Unlock and detach coolant hose (1).

Release screws.

Raise coolant expansion tank (2) until plug for coolant level switch and lower coolant hose are accessible.

Installation:

• Make sure expansion tank is in correct installation position.
• Tightening torque 17 10 2AZ.

Fig. 21: Identifying Coolant Hose And Expansion Tank

Unlock plug (1) and remove.

Unlock and detach lower coolant hose (2).

Remove expansion tank (3).

Fig. 22: Identifying Plug, Lower Coolant Hose, Expansion Tank

REMOVING AND INSTALLING/REPLACING POWER STEERING COOLING COIL (N62TU/N52K/M57T2)

Special tools required:

• 17 0 030

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

IMPORTANT: When working on the oil, coolant or fuel circuit, you must protect the alternator against contamination.

Cover alternator with suitable materials.

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

Necessary preliminary tasks:

• Remove radiator air duct.
• Remove fan cowl.
• After completing this operation, check fluid level in tank of power steering system.

Press lines (1) in direction of cooling coil (2). Pull locking ring towards rear and keep pressed.

Detach lines (1) from cooling coil (2).

If necessary, use special tool 17 0 030 PLIERS.

IMPORTANT: Catch and dispose of emerging fluid.

Fig. 23: Identifying Lines And Cooling Coil

Release screws and detach side holder (1).

Tightening torque.

Feed out cooling coil (2) towards front and remove.

Fig. 24: Identifying Screws, Holder And Cooling Coil

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