17 11 100 Removing and installing/replacing coolant expansion tank (N54, N52K)

Necessary preliminary tasks

N54/N54T only: Release vacuum line at retainers (1) from expansion tank.

Unfasten screws (2).

Tightening torque 17 10 4AZ .

Release and disconnect coolant hoses (3).

Raise expansion tank (4)

Fig 1: Identifying Retainers, Coolant Hoses, Screws And Expansion Tank

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Unlock plug (1) on coolant level switch and disconnect.

Remove expansion tank (2).

Installation:

Make sure locating pin (3) is correctly seated in rubber mount (4).

Fig 2: Identifying Plug, Expansion Tank, Locating Pin And Rubber Mount

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Assemble engine.

Top up COOLANT .

Check cooling system for LEAKS .