11 53 000 Removing and installing/replacing coolant thermostat (M52TU / M54 / M56)

WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, and 2001 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Remove fan clutch with fan impeller, refer to 11 52 020 REMOVING AND INSTALLING/REPLACING FAN CLUTCH (S52 / S54 / M52 / M52TU / M54 / M56) .

Drain and dispose of coolant.

NOTE: The water drain plug is located on the exhaust side on cylinder 2 in the engine block.

Installation:

Replacing sealing ring on water drain plug.

Tightening torque, (25 N.m.).

Vent cooling system and check for leaks, refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (M54 / M56) .

Pull locks and disconnect water hoses.

Installation:

Refer to general instructions for work on cooling system. Refer to 17 00 ... INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

Fig 1: Disconnecting Water Hoses

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Loosen nut (1).

Release screws on thermostat housing, remove thermostat housing.

Fig 2: Removing Screws On Thermostat Housing

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Installation:

Keep sealing faces clean and free of oil.

Fig 3: Identifying Sealing Face

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NOTE: Coolant thermostat is integrated in coolant thermostat housing and can only be replaced as a single unit.

Installation:

Replace seal (1).

Fig 4: View Of Seal On Housing

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