Drain/pour in coolant

AR20.00-Y-1142A

Drain/pour in coolant

12.05.2020

Engine

400.950/951 in model 400.204/207/212/216/231/241/243/262/281

Engine

400.954/956 in model 831.247

Coolant draining procedure

345

Drain screw

Coolant filling procedure

A

Minimum

346

Coolant

347

De-aeration tank

348

De-aeration tank filler cap

Coolant draining procedure

 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

1

Remove drain screw (345) from the radiator and collect coolant in a clean container and tighten the drain screw.


Avoid opening the cooling system unless the coolant temperature is below 90°.
Failure to follow the above procedure causes personal injuries.


Carefully open de-aeration tank cap and slowly release the pressure in order to avoid injuries.
Failure to follow the above procedure causes personal injuries.

 Check and reuse the coolant drain screw o-ring to prevent the coolant leakage.

2

Connect a clean hose to the drain screw (345) on crankcase and loosen the adapter and collect coolant in a clean container.

Coolant filling procedure

3

Install drain screw on crankcase and tighten.


Avoid over tightening of the coolant drain screw.
Failure to follow this may lead to damage to the drain screw.

 Ensure that the coolant drain screw is properly tightened.

 Use only the recommended coolant.

 Drain plug on crankcase

*BA01.10-Y-1029-02B

4

Fill coolant (346) through filler plug in the de-aeration tank (347).


Don't remove the pressure relief cap immediately after running the engine.
Failure to follow this causes personal injuries.

 Use only the recommended coolant.

 Mixture ratio for coolant

*BF20.00-N-1001-04A

5

Make sure the de-aeration tank (347) is filling with coolant up to the filler neck.


Ensure the O-ring of the de-aeration tank cap is properly tightened to avoid the distance between the cap and O-ring.
Failure to follow this leads to coolant leakage.

 Tighten the de-aeration tank filler cap (348) properly.

6

Start and run the engine for about five minutes and check the coolant level in the de-aeration tank.

 Fill coolant in de-aeration tank as much as possible.

 Visually inspect hoses for any leakages.

 Mixture ratio for coolant

*BF20.00-N-1001-04A

 Engine

Number

Designation

Engine 400.950/951 in model 400.204/207/212/216/231/241/243/262/281
Engine 400.954/956 in model 831.247

BA01.10-Y-1029-02B

Drain plug on crankcase

Nm

30

 Mixture ratio for coolant

Number

Designation

Engine all (BUS, Heavy transporter, Light transporter, TRUCK, UNIMOG)

BF20.00-N-1001-04A

Mixture ratio for coolant

Antifreeze/water down to -37 °C

%

50/50

Antifreeze/water down to -45 °C

%

55/45

Sheet

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A

Sheet

BB00.40-P-0325-05A