4391 - Testing radiator cap Engines 364, 364 A/LA - T2

20 - 4391 Testing radiator cap

Opening pressures

Code number Pressure relief valve Vacuum valve

100 or 1.0 0.9 to 1.15 bar gauge pressure 0.1 bar vacuum

The code number is stamped on the radiator cap.

Special tools 

Testing pressure relief valve

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Note

Replace cap if there are signs of corrosion on cap.

1 Fit radiator cap onto the double threaded connector.

2 Insert tester into the double threaded connector and press down both levers.

 001 589 83 21 00

 000 589 75 63 00

3 Connect compressed air hose with tyre inflation connection to tester.

4 Build up test pressure to the indicated level. The pressure relief valve is in order if the opening pressure agrees with the figures in the table.

 001 589 83 21 00

 000 589 75 63 00

5 Remove tester and radiator cap from double threaded connector.

Testing vacuum valve

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The vacuum valve (arrow) must be touching the rubber seal, must be easily lifted and must spring back when released.