Drain/pour in coolant

AR20.00-P-1142MNB

Drain/pour in coolant

09.06.2016

Engine

178 in model 190

1

Coolant expansion reservoir

2

Cap

3

Drain hose

4

Drain screw

 Danger !

Risk of injury caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof.

No parts of the body or limbs should be within the operating area when the components are moving.

AS00.00-Z-0011-01A

 Danger !

Risk of injury to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning from swallowing coolant.

Do not open cooling system unless coolant temperature is below 90 °C. Open cap slowly and release the pressure. Do not pour coolant into beverage containers.
Wear protective gloves, protective clothing and safety glasses.

AS20.00-Z-0001-01A



Notes on coolant

AH20.00-N-2080-01A

Drain off

1

Slowly open cap (2) on coolant expansion reservoir (1) and take off

2

Remove front section of lower engine compartment paneling

AR61.20-P-1105RG

3

Slide the drain hose (3) onto the drain fitting on radiator

4

Slacken drain screw (4) at radiator and drain coolant


Only unscrew drain screw (4) on radiator until the coolant flows out.
There could otherwise be permanent damage to the drain screw (4) on the radiator.

 Observe regulations to dispose of coolant.

 Catch coolant in a suitable container.

5

Tighten down drain screw (4) on radiator and pull out drain hose (3)

Pour in

6

Pour in coolant and ventilate engine cooling system

AR20.00-P-1142-04A

 Use clean coolant again.

 Coolant mixing ratio

*BF20.00-P-1001-04A

 Cooling system

*BF20.00-P-1001-02U

 Test cap

*210589009100

 Cooler vacuum filling device

*285589002100

 NTKL Adaption

*285589012100

 Electric vacuum pump

*285589022100



Check

7

Check engine cooling system for leaktightness

AR20.00-P-1010MNB

 Danger !

Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.

Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.

AS00.00-Z-0005-01A

8

Perform an engine test run, check engine cooling system for proper operation

9

Fit front section of lower engine compartment paneling

AR61.20-P-1105RG

 Cooling system

Number

Designation

Engine 178 in model 190

BF20.00-P-1001-02U

Cooling system

Workshop replacement amount

Main circuit

Liter

 14,2

Low temperature circuit

Liter

 7,3

Antifreeze/water

Up to -37_°C

50/50

As of -38_°C

55/45

Specifications for Operating Fluids, Sheet

BB00.40-P-0325-06A

Specifications for Operating Fluids, Sheet

BB00.40-P-0326-06A

Specifications for Operating Fluids, Sheet

-

 Coolant mixing ratio

Number

Designation

Engine all

BF20.00-P-1001-04A

Coolant mixing ratio

Antifreeze/water

Up to -37°C

%

50/50

As of -38 °C

%

55/45

Sheet

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A

Sheet

BB00.40-P-0326-00A