Drain/fill coolant of auxiliary circuit

AR08.50-P-0022MRM

Drain/fill coolant of auxiliary circuit

14.05.2020

Engine

274.9 in model 167

1

Coolant hose

2

Clutch

M43/7

Low-temperature circuit circulation pump 2

 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 coolant

AH20.00-N-2080-01A

Drain off

1

Slowly open cap of coolant expansion reservoir, relieve overpressure, and remove cap.

2

Remove front right wheel and tire assembly.

AR40.10-P-1102ME

3.1

Remove front section of right front fender liner.

When removing high-voltage components coolant radiator.

AR88.10-P-1301ME

3.2

Remove rear section of right front fender liner.

When removing the high-voltage battery.

AR88.10-P-1301ME

4.1

Remove coolant hose (1) from low-temperature circuit circulation pump 2 (M43/7) and collect escaping coolant with suitable container.

When removing high-voltage components coolant radiator.

AR20.20-P-7441-01RQ

4.2

Open couplings (2) and collect escaping coolant with suitable container.

When removing the high-voltage battery.

AR20.20-P-7441-01RQ

Pour in

5.1

Close couplings (2).

When removing the high-voltage battery.

AR20.20-P-7441-01RQ

5.2

Attach coolant hose (1) to low-temperature circuit circulation pump 2 (M43/7).

When removing high-voltage components coolant radiator.

AR20.20-P-7441-01RQ

6

Fill coolant and bleed cooling circuit.

AR20.00-P-1142-04A

 Cooling system

*BF20.00-P-1001-02CA

 Electric vacuum pump

*285589022100

 NTKL Adaption

*285589012100

 Cooler vacuum filling device

*285589002100

 Test cap

*210589009100

7

Check auxiliary circuit for leak tightness.

AR20.00-P-1011MRK

8.1

Install rear section of right front fender liner.

When removing the high-voltage battery.

AR88.10-P-1301ME

8.2

Install front section of right front fender liner.

When removing high-voltage components coolant radiator.

AR88.10-P-1301ME

9

Install front right wheel and tire assembly.

AR40.10-P-1102ME

 Cooling system

Number

Designation

Engine 274 in model 167.154/354

BF20.00-P-1001-02CA

Cooling system

Workshop replacement amount

Main circuit

l

23,0

Low-temperature circuit

l

-

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