Test cooling system cap

AR20.30-I-4300A

Test cooling system cap

9.8.11



Checking

 Danger!

Risk of injury to skin and eyes suffering scalding from contact with hot coolant spray. 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 bottles.

Wear protective gloves, protective clothing and eye protection.

AS20.00-Z-0001-01A

1

Slowly open cooling system cap (1), release pressure and then cooling system cap (1)

 If corrosion present at cooling system cap (1), it must be replaced.

2

Check vacuum valve for cooling system cap (1)

 The vacuum valve must be resting against the rubber seal (arrow), it must be possible to lift it easily and it must spring back after being released.

3

Check identification number on cap

*BE20.30-N-1001-01C

4

Attach double fitting (2) on tester (3)



*000589756300



*001589832100

5

Screw cooling system cap (1) onto double fitting (2)



*000589756300

6

Connect compressed air hose with tire inflation connection to the tester (3) and apply the opening pressure to the cooling system cap (1)



*001589832100

*BE20.30-N-1002-01C

7

Check pressure relief valve for cooling system cap (1)

 Determine opening pressure of cooling system cap (1); replace cooling system cap (1) if necessary.

*BE20.30-N-1002-01C

8

Unscrew cooling system cap (1) on double fitting (2)



*000589756300

9

Close cooling system cap (1)

Number

Designation

Engine 384.906/
907

BE20.30-N-1001-01C

Cap code number

–

100

or

1.0

BE20.30-N-1002-01C

Pressure relief valve opens

bar

0.9...1.15