17 11 040 Removing and installing/replacing thermostat inserts (N63 B40/B44 O 0/1, N74)

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

Recycling

Catch and dispose of drained coolant in a suitable container.

Transmission oil emerges when engine oil lines are detached from transmission oil cooler.

Catch and dispose of escaping transmission oil in a suitable container.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

Drain COOLANT .
Remove FAN COWL .

Release and disconnect coolant hoses (1).

Unscrew nuts (2).

Tightening torque 17 10 4AZ .

Remove thermostat insert (3).

Installation note:

Clean contact surfaces.

Fig 1: Identifying Coolant Hoses, Thermostat Insert And Mounting Nuts
Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check the oil level . See 00 11 500 CHECKING/TOPPING UP OIL LEVEL IN AUTOMATIC TRANSMISSION (GA6HP26Z/GA6HP32Z) or 00 11 500 CHECKING/TOPPING UP OIL LEVEL IN AUTOMATIC TRANSMISSION (GA8HP45Z, GA8HP70Z, GA8HP90Z) in the automatic transmission. If necessary, top up automatic transmission fluid.