Drain/pour in coolant

AR20.00-P-1142FR

Drain/pour in coolant

08.02.2019

Engine

177 in model 290

Shown on model 290.689

1

Engine cooling system cooler

3

Drain fitting

2

Coolant hose

4

Drain valve

 Warning

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

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

Notes on coolant level

AH20.00-P-1142-01CW

Drain off

1

Slowly open cap at engine cooling system coolant expansion reservoir and remove.

AR20.30-P-4950MNI

2

Remove front and center lower engine compartment paneling.

AR61.20-P-1105FRX

3

Slide suitable drain hose onto drain fitting (3).

4

Open drain valve (4) at engine cooling system cooler (1) and drain coolant into suitable container.


Only open drain valve (4) to extent that coolant can drain out.
Otherwise damage will occur on drain valve (4) and on engine cooling system cooler (1).

 Observe regulations to dispose of coolant.

5

Remove coolant hose (2) from additional cooler in right wheel arch and drain coolant into suitable container.

Engine 177 in model 290.689

AR20.20-P-7441-01RQ

Pour in

6

Close drain valve (4).

7

Remove drain hose from drain fitting (3).

8

Install coolant hose (2) on additional cooler in right wheel arch.

Engine 177 in model 290.689

AR20.20-P-7441-01RQ

9

Pour in coolant and bleed engine cooling system.

AR20.00-P-1142-04A

 Use clean coolant again.

 Cooling system

*BF20.00-P-1001-02LA

 Test cap

*210589009100

 Cooler vacuum filling device

*285589002100

 NTKL Adaption

*285589012100

 Electric vacuum pump

*285589022100

10

Check engine cooling system for leak tightness.

AR20.00-P-1011MNI

 Only install upper engine cover, front and center lower engine compartment lining after engine test run.

 Warning

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

11

Perform engine test run and check engine cooling system for proper operation.

12

Install the front and lower center engine compartment lining.

AR61.20-P-1105FRX

13

Install upper engine cover.

 Cooling system

Number

Designation

Engine 177 in model 290

BF20.00-P-1001-02LA

Cooling system

Workshop replacement amount

Main circuit

Liter

15,3

Low-temperature circuit

Liter

6,4

Antifreeze/water

Down to -37°C

%

50/50

-38°C and below

%

55/45

Specifications for Operating Fluids, sheet

BB00.40-P-0310-01A

Specifications for Operating Fluids, sheet

BB00.40-P-0325-06A

Specifications for Operating Fluids, sheet

BB00.40-P-0326-06A