Drain/fill in coolant

AR20.00-P-1142RTB

Drain/fill in coolant

16.8.10

26.1.06

Cooling system

*BF20.00-P-1001-02W

Drain

 Danger!

Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by 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

All engines

AH20.00-N-2080-01A

 Danger!

Risk of injury caused by fingers being pinched or crushed when removing, installing or aligning hoods, doors, trunk lids, liftgates or sliding roof

Keep body parts and limbs well clear of moving parts.

AS00.00-Z-0011-01A

1

Open engine hood

AR88.40-P-1000RT

 Danger!

Risk of death caused by vehicle slipping or toppling off of the lifting platform.

Align vehicle between the columns of lifting platform and position four support plates at the lifting support points specified by vehicle manufacturer.

AS00.00-Z-0010-01A

2

Raise vehicle with vehicle lift

AR00.60-P-1000RT

3

Open coolant cap (1) at coolant expansion reservoir (2)

 Turn coolant cap (1) counterclockwise one half-turn, release the pressure, then unscrew coolant cap (1).

4

Remove bottom section of soundproofing

AR94.30-P-5300RT

5

Slide collector siphon hose onto fitting (4) at radiator

 The fitting (4) is located at bottom left of the radiator.

6

Open radiator drain plug (3) and drain coolant

 Collect coolant in coolant container (01a). Observe regulations for disposal of coolant.

 Cooler vacuum filling device

*285589002100

7

Tighten radiator drain plug (3)

 To do this, remove siphon hose from fitting (4).

Filling

8

Screw on test cap (02) at coolant expansion reservoir (2)

 Test cap

*210589009100

9

Attach control unit (01b) to test cap (02)

 Cooler vacuum filling device

*285589002100

10

Attach venturi nozzle (01c) to control unit (01b)

 Cooler vacuum filling device

*285589002100

11

Close drain valve (01d) and feed valve (01e)

12

Attach coolant feed hose (7) to coolant container (01a)

 Make sure that at least 2 liters extra coolant are in coolant tank (01a) than the maximum fill quantity of the coolant system so that no air is drawn in.



Coolant specifications

Sheet 310.1

BB00.40-P-0310-01A



Anticorrosion/antifreeze agents (Sheet 325.0)

Sheet 325.0

BB00.40-P-0325-00A

 Cooling system

*BF20.00-P-1001-02W

13

Guide the waste air hose (8) into an empty container (9)

14

Connect the compressed-air hose (10) to the venturi nozzle (01c) and apply pressure.

15

Open the drain valve (01d).

 A vacuum is created in the cooling system.

16

Open feed valve (01e) until feed hose (7) has filled with coolant

17

Close drain valve (01d) as soon as the display of control unit (01b) is in the green area

18

Detach compressed air hose (10) from venturi nozzle (01c) and monitor whether vacuum remains stable for 30 seconds.

 If not, check hoses and connections. Tighten or replace them if necessary and create a vacuum again.

19

Open the feed valve (01e).

 The cooling system is filled.

20

Open drain valve (01d) if coolant is no longer suctioned

21

Remove control unit (01b) along with all connections and test cap (02)

22

Correct coolant level up to marking in coolant expansion reservoir (2)



Notes on coolant level

AH20.00-P-1142-01GZB



Checking

23

Close coolant expansion reservoir (2) with coolant cap (1)

24

Inspecting cooling system for leaks

AR20.00-P-1010RTB

25

Install bottom sections of soundproofing

AR94.30-P-5300RT

26

Lower vehicle

27

Close engine hood

AR88.40-P-1000RT

Number

Designation

Engine
642
in model
164, 251

BF20.00-P-1001-02W

Cooling system

Quantity changed in workshop

Liters

6.5

Antifreeze/water

Up to -37°C

50/50

up to -45°C

55/45

Service specifications

Sheet

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A