Drain/pour in coolant

AR20.00-P-1142GW

Drain/pour in coolant

05.12.2018

Model

463 with engine 157

Modification notes

20.11.2013

Work procedure altered and special tools for electrical vacuum pump and NTKL adaptation, added.

Operation steps 14 to 26

AR20.00-P-1142-04A

26.09.2014

Mixing ratio for coolant

BF20.00-P-1001-04A

1

Coolant expansion reservoir

3a

Drain hose

6

Additional radiator drain screw

2

Cap

4

Expansion reservoir

7

Radiator

3

Drain screw for radiator

5

Cap

8

Low-temperature water circuit additional radiator

 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

Notes on coolant level

AH20.00-P-1142-01CW

Drain off

1

Open hood

Model 463 with engine 157
as of model year 2013 up to model year 2019

AR88.40-P-1000GG

2

Lift/jack up vehicle

Model 463 with engine 157
as of model year 2010 up to model year 2013

AR00.60-P-1000G

3

Remove underride guard

 Aid of helper required.

Drain off coolant from cooler (7)

4

Unscrew cap (2) slowly at coolant expansion reservoir (1) and relieve overpressure

5

Drain off coolant

 To do this place drain hose (3a) with an inside diameter of 12 mm on the radiator (7), then open the radiator drain screw (3). Collect coolant in a suitable container.

 Observe regulations to dispose of coolant.

Drain coolant at low-temperature water circuit additional radiator (8)

6

Unscrew cap (5) slowly at expansion reservoir (4) and relieve overpressure

7

Drain off coolant

 To do this open additional radiator drain screw (6). Collect coolant in a suitable container.

 Observe regulations to dispose of coolant.

 Installation: Replace additional radiator drain screw (6) and seal.

Pour in

8

Detach drain hose (3a)

9

Tighten down cooler drain screw (3)

10

Tighten down additional radiator drain screw (6)

 Drain screw to additional radiator for low-temperature circuit

*BA20.20-P-1003-01O

11

Pour in coolant and bleed cooling system

AR20.00-P-1142-04A

 Coolant mixing ratio

*BF20.00-P-1001-04A

 Electric vacuum pump

*285589022100

 NTKL Adaption

*285589012100

 Test cap

*210589009100

 Cooler vacuum filling device

*285589002100

12

Check cooling system for leaktightness

AR20.00-P-1010GW

 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

13

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

 Radiator, coolant hoses

Number

Designation

Engine 157

BA20.20-P-1003-01O

Drain screw to additional radiator for low-temperature circuit

M12

Nm

30

 Coolant mixing ratio

Number

Designation

Engine all (4xWD, CAR, smart)

BF20.00-P-1001-04A

Coolant mixing ratio

Antifreeze/water

Up to -37°C

%

50/50

As of -38 °C

%

55/45

Overview and specifications sheet

BB00.40-P-0310-01A

References to sheet specification

BB00.40-P-0310ZZ