Drain/fill coolant of main circuit

AR08.50-P-0023EQ

Drain/fill coolant of main circuit

03.12.2019

Model

293

1

Coolant expansion reservoir

2

Drain fitting

3

Drain valve

4

Connection

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

 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

General information on handling vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system

AH00.00-Z-0300-01A

Topical note

Notes on coolant

AH20.00-N-2080-01A

Drain off

1

Remove engine compartment cover at top.



AP01.10-P-2405-01J

2

Slowly open and remove the cap on the coolant expansion reservoir (1) of the main circuit.

3

Remove front and center lower engine compartment paneling.

AR61.20-P-1105EQ

4

Slide suitable drain hose onto drain fitting (2).

5

Open the drain valve (3) on the main circuit cooler and drain the coolant into a suitable container.


Only open drain valve (3) far enough for coolant to flow out.
Otherwise, the drain valve (3) and the main circuit cooler will be damaged.

6

Remove the connection point (4) of the circulation pump and drain the coolant into a suitable container.

AR08.50-P-0018-01EQ

Pour in

7

Close drain valve (3).

8

Remove drain hose from drain fitting (2).

9

Attach connection point (4) to circulation pump.

AR08.50-P-0018-01EQ

10

Fill in coolant.

AR08.50-P-0017-01EQ

 Main circuit

*BF08.50-P-1001-01A

 Test cap

*210589009100

 Cooler vacuum filling device

*285589002100

 NTKL Adaption

*285589012100

 Electric vacuum pump

*285589022100

11

Correct coolant level.



AP20.30-P-2052O

12

Perform venting routine with diagnostic device.



AD00.00-P-2000-06FR

13

Check/correct coolant level.



AP20.30-P-2052O



Check

14

Check main circuit for leaktightness.

AR08.50-P-0013EQ

15

Install the front and lower center engine compartment lining.

AR61.20-P-1105EQ

16

Install engine compartment cover at top.



AP01.10-P-2405-01J

 Cooling circuit

Number

Designation

Engine 780 in model 293

BF08.50-P-1001-01A

Main circuit

Total filling capacity

Liter

10

Antifreeze/water

Up to -37°C

%

50/50

As of -38 °C

%

55/45

Specifications for service products

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A