mercedesbenz Workshop Repair Guides

Mercedes Benz Workshop Service and Repair Manuals

Thermostat Housing, Engine Cooling > < Mechanical Specifications|Page 3765
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Thermostat: Service and Repair

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Drain Coolant.

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Unscrew cap (31) with connected engine coolant hose,
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Tightening torque for light alloy cap: 10 Nm (7.4 ft lbs)

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Tightening torque for plastic cap: 8 Nm (6.3 ft lbs).

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Remove engine coolant thermostat (30).

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Assemble in reverse order. 

NOTES

Install the engine coolant thermostat so that the ball valve is at the highest point.
Always replace thermostat O-ring (32).

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Check for leaks.

Thermostat Housing, Engine Cooling > < Mechanical Specifications|Page 3765