Flush engine cooling system

AR20.00-D-1251TS

Flush engine cooling system

12.05.2020

Engine

642 in model 906, 907

Engine

651 in model 900, 906, 907, 910

Engine

654.9 in model 907.1/2/6

 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

 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



Remove

1

Drain off coolant.

Engine 654.9 in model 907.1/2/6

AR20.00-D-1142TSM

Engine 642.896/898/992/993, 651.955/956/957 in model 906
Engine 651 in model 900

AR20.00-D-1140SD

Engine 642 in model 907
Engine 651 in model 907, 910

AR20.00-D-1142TSR

Flushing

2

Fill engine cooling system with fresh water.

Engine 654.9 in model 907.1/2/6

AR20.00-D-1142TSM

Engine 642.896/898/992/993, 651.955/956/957 in model 906
Engine 651 in model 900

AR20.00-D-1140SD

Engine 642 in model 907
Engine 651 in model 907, 910

AR20.00-D-1142TSR

 Engine 642 in model 906, engine 651 in model 900, 906Coolant

*BF20.00-N-1001-01A

 Engine 642 in model 907, engine 651 in model 907, 910, engine 654 in model 907.1/2/6Coolant

*BF20.00-N-1001-01TS

 Engine 642, 651, 654Mixture ratio for coolant

*BF20.00-N-1001-04A

 Engine 642 in model 906
Engine 651 in model 900, 906
Test cap

*639589009100

 Engine 642 in model 907
Engine 651 in model 907, 910
Engine 654.9 in model 907.1/2/6
Test cap

*210589009100

 Cooler vacuum filling device

*285589002100

3

Install cap of coolant expansion reservoir.

4

Start engine and bring to operating temperature at average engine speed.

 Maintain the operating temperature (approx. 80 °C) for approximately 5  min while the engine is running.

5

Switch off engine.

 Let engine cooling system cool down to at least 50 °C.

6

Drain fresh water.

Engine 654.9 in model 907.1/2/6

AR20.00-D-1142TSM

Engine 642.896/898/992/993, 651.955/956/957 in model 906
Engine 651 in model 900

AR20.00-D-1140SD

Engine 642 in model 907
Engine 651 in model 907, 910

AR20.00-D-1142TSR

If coolant residue and/or contamination are still located in the engine cooling system,



repeat rinsing process until coolant residue and/or contamination are removed.



Install

7

Fill in coolant.

Engine 654.9 in model 907.1/2/6

AR20.00-D-1142TSM

Engine 642.896/898/992/993, 651.955/956/957 in model 906
Engine 651 in model 900

AR20.00-D-1140SD

Engine 642 in model 907
Engine 651 in model 907, 910

AR20.00-D-1142TSR

 Engine cooling

Number

Designation

Engine 642.896/898/992/993

Engine 651.955 in model 900
Engine 651.955/956/957 in model 906

BF20.00-N-1001-01A

Coolant

Total filling capacity

Liter

10

10

Corrosion/antifreeze down to -37 °C

Liter

5

4,8

Corrosion/antifreeze down to -45 °C

Liter

5,5

5,2

Sheet

BB00.40-P-0310-01A

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A

BB00.40-P-0325-00A

Sheet

BB00.40-P-0325-06A

BB00.40-P-0325-06A

Sheet

BB00.40-P-0326-06A

BB00.40-P-0326-06A

 Engine cooling

Number

Designation

Engine 654 in model 907 with code H12 (Auxiliary water heater) or with code H13 (Rear additional heat exchanger) or with code HZ9 (Heater booster)

Engine 654 in model 907
except code H12 (Auxiliary hot-water heater)
except code H13 (Additional heat exchanger)
except code HZ9 (Heater booster)

BF20.00-N-1001-01TS

Coolant

Total filling capacity

Liter

 12,4

 10

Corrosion/antifreeze down to ­37°C

Liter

 6,3

 5,1

Corrosion/antifreeze down to ­45°C

Liter

 7

 5,6

Sheet

BB00.40-P-0310-01A

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-05A

BB00.40-P-0325-05A

 Engine cooling

Number

Designation

Engine 642 in model 907
except code H12 (Auxiliary hot-water heater)
except code H13 (Additional heat exchanger)
except code HZ9 (Heater booster)

Engine 642 in model 907 with code H12 (Hot-water auxiliary heater) or code H13 (Rear additional heat exchanger) or code HZ9 (Heater booster)

BF20.00-N-1001-01TS

Coolant

Total filling capacity

Liter

 11,6

 14,4

Corrosion/antifreeze down to ­37°C

Liter

 5,8

 7,2

Corrosion/antifreeze down to ­45°C

Liter

 6,4

 7,9

Sheet

BB00.40-P-0310-01A

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-05A

BB00.40-P-0325-05A

 Engine cooling

Number

Designation

Engine 651 in model 907
except code H12 (Auxiliary hot-water heater)
except code H13 (Additional heat exchanger)
except code HZ9 (Heater booster)

Engine 651 in model 907 with code H12 (Hot-water auxiliary heater) or code H13 (Rear additional heat exchanger) or code HZ9 (Heater booster)

BF20.00-N-1001-01TS

Coolant

Total filling capacity

Liter

 9,8

 12,2

Corrosion/antifreeze down to ­37°C

Liter

 4,9

 6,1

Corrosion/antifreeze down to ­45°C

Liter

 5,4

 6,7

Sheet

BB00.40-P-0310-01A

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-05A

BB00.40-P-0325-05A

 Engine cooling

Number

Designation

Engine 651 in model 910

BF20.00-N-1001-01TS

Coolant

Total filling capacity

Liter

 8

Corrosion/antifreeze down to ­37°C

Liter

 4

Corrosion/antifreeze down to ­45°C

Liter

 4,4

Sheet

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-05A

 Mixture ratio for coolant

Number

Designation

Engine all (BUS, Heavy transporter, Light transporter, TRUCK, UNIMOG)

BF20.00-N-1001-04A

Mixture ratio for coolant

Antifreeze/water down to -37 °C

%

50/50

Antifreeze/water down to -45 °C

%

55/45

Sheet

BB00.40-P-0310-01A

Sheet

BB00.40-P-0325-00A

Sheet

BB00.40-P-0325-05A