Drain/pour in coolant

AR20.00-P-1142W

Drain/pour in coolant

12.11.2018

Engine

152, 276 in model 172

Shown on model 172 with engine 276.9

2

Cap

3

Drain hose

3a

Fitting

4

Coolant expansion reservoir

6

Radiator

7

Drain screw

 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

Slowly unscrew cap (2) on coolant expansion reservoir (4), relieve overpressure and remove cap (2)

2

Remove lower engine compartment paneling

AR61.20-P-1105W

3

Push drain hose (3) onto fitting (3a) on radiator (6)

4

Open drain screw (7) on cooler (6) and collect coolant in a suitable container

 Observe regulations to dispose of coolant.

Pour in

5

Screw tight drain screw (7) at radiator (6)

6

Detach drain hose (3) from fitting (3a)

7

Pour in coolant and ventilate engine cooling system



Anticorrosion/antifreeze agents (Sheet 325.0)

BB00.40-P-0325-00A



Coolant specifications

BB00.40-P-0310-01A

AR20.00-P-1142-04A

 Re-use clean coolant.

 Engine 152 in model 172Cooling system

*BF20.00-P-1001-06C

 Engine 276.8 in model 172
Engine 276.9 in model 172Cooling system

*BF20.00-P-1001-02BA

 NTKL Adaption

*285589012100

 Electric vacuum pump

*285589022100

 Test cap

*210589009100

 Cooler vacuum filling device

*285589002100

8

Check engine cooling system for leaktightness

AR20.00-P-1010W

 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

9

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

 Cooling system

Number

Designation

Engine 276.8 in model 172

Engine 276.9 in model 172

BF20.00-P-1001-02BA

Cooling system

Workshop replacement amount

Main circuit

l

10,4

10,4

Low-temperature circuit

l

3,4

-

Antifreeze/water

Up to -37°C

%

50/50

50/50

As of -38 °C

%

55/45

55/45

Specifications for Operating Fluids, sheet

BB00.40-P-0310-01A

BB00.40-P-0310-01A

Specifications for Operating Fluids, sheet

BB00.40-P-0325-06A

BB00.40-P-0325-00A

Specifications for Operating Fluids, sheet

BB00.40-P-0326-06A

BB00.40-P-0326-00A

 Cooling system

Number

Designation

Engine 152 in model 172

BF20.00-P-1001-06C

Cooling system

Workshop replacement amount

Liter

9,5

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-0325-00A

Specifications for Operating Fluids, sheet

BB00.40-P-0326-00A