Test cooling system cap

AR20.30-D-4300A

Test cooling system cap

2.2.09

 

Remove/install

Danger!

Risk of injury to skin and eyes caused by scalding from contact with hot coolant spray. Risk of poisoning caused by 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

1

Take off cooling system cap (5)

 If corrosion present at cap (5) it must be replaced.



Checking

2

Attach test cap (3) and double union (4) to testing unit (2)

 Testing unit (2)

*124589242100

 Test cap (3)

*124589009100

 Double fitting (4)

*000589776300

3

Screw cap (5) onto double union (4)

4

Check pressure relief valve

Determine the opening pressure of cap (5) by pumping; replace cap (5) if necessary.

*BE20.30-N-1002-01B

*BE20.30-N-1001-01B

5

Test vacuum valve (6)

For a cap (5): The vacuum valve (6) must be resting against the rubber seal (arrow); it must be easy to raise it and must spring back when released.

*BE20.30-N-1003-01B

6

Install in the reverse order

Number

Designation

Engine 601.942/
943/970

Engine
602.980/
984/985

BE20.30-N-1001-01B

Cap code number

140

140

BE20.30-N-1002-01B

Pressure relief valve opens

New

bar

1.4 (0.1)

1.4 (0.1)

Used

bar

1.4 (-0.1)

1.4 (-0.1)

BE20.30-N-1003-01B

Vacuum valve opens (reference value)

bar

-0.1

-0.1