17 13 030 Removing and installing/replacing coolant filler neck (N63 B40/B44 O 0/1)

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Necessary preliminary tasks

Drain COOLANT .
Remove ACOUSTIC INSULATION for bulkhead on left
Remove front left WHEEL ARCH COVER

Release screws (1).

Fig 1: Identifying Screws

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Unlock and detach coolant hoses (1) on coolant filler neck.

Fig 2: Identifying Coolant Hoses

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Unlock and detach coolant hoses (1) on coolant filler neck.

Weave out and remove coolant filler neck.

Fig 3: Identifying Coolant Hose

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Assemble engine.

Top up COOLANT .

Visual inspection of cooling system for tightness.