Inspect cooling system for leaks

AR20.00-D-1010TSC

Inspect cooling system for leaks

20.05.2020

Engine

274 in model 907

Modification notes

20.05.2020

Specifications for Operating Fluids BB00.40-P-0325-06A and BB00.40-P-0326-06A added.

Operation step 4

 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



Check

1

Set heater switch to max. heating output.

2

Switch auxiliary heating to max. output.

If installed.

3

Open cap slowly, relieve overpressure and unscrew from coolant expansion reservoir.

4

Check coolant level, correct if necessary.



Coolant specifications

BB00.40-P-0310-01A



Anticorrosion agent/antifreeze (specification 325.6)

BB00.40-P-0325-06A



Premixed coolant (specification 326.6)

BB00.40-P-0326-06A

5

Attach tester cap to expansion reservoir.

 Test cap

*210589009100

6

Attach pressure pump to tester cap.

 Pressure pump

*124589242100

7

Apply test pressure to engine cooling system.

Test pressure

*BE20.30-N-1004-01B

8

Raise vehicle.

AR00.60-D-1000-04TS

Topical note

Special instructions for lifting and supporting vehicle

AH00.60-N-0100-01TS

9

Check coolant hoses as well as their connections for condition and coolant loss, seal if necessary.

10

Install in the reverse order.

Check values for engine cooling system cap

Number

Designation

Engine 274 in model 907

BE20.30-N-1004-01B

Test pressure

bar

1,5