11 53 000 Removing and installing or replacing coolant thermostat (N16)

Special tools required:

17 2 050

WARNING: Risk of scalding.
Only perform these tasks on an engine that has cooled down.
Danger of injury.
Risk of slipping due to coolant on the floor.

Recycling:

Catch and dispose of drained coolant.

Observe country-specific waste disposal regulations.

IMPORTANT: Read and comply with GENERAL INFORMATION .
Protect plug connections against coolant and contamination.
Cover plug connections with suitable materials.

Necessary preliminary tasks:

Drain COOLANT from radiator.
Remove INTAKE SILENCER HOUSING with intake pipe.

Release lock (1) on coolant pipe in direction of arrow.

Fig 1: Releasing Lock On Coolant Pipe

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Disconnect plug connection (1) on coolant thermostat.

Fig 2: Identifying Plug Connection On Coolant Thermostat

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Detach all coolant hoses from thermostat.

NOTE:

Release metal hose clamps with special tool 17 2 050 .

Slacken nut (2).

Release screws (3).

Tightening torque: 11 53 1AZ .

Fig 3: Identifying Coolant Hoses Nut And Screws

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NOTE: Illustrations show N12.

Installation note:

Replace gasket (1).

Fig 4: Identifying Gasket

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Assemble engine.

FILL COOLING SYSTEM and check for tightness.