PRE-RELEASE
Checking the bypass valve
| Checking the bypass valve |
| Checks |
| 1. |
Detach the vacuum hose from the bypass valve.
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| 2. |
Connect the pressure/vacuum pump, part no. 30 14 883, and create a vacuum pressure in the valve.
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| 3. |
Check that the diaphragm is intact. If the diaphragm is damaged, the vacuum is released.
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| 4. |
Pump up an overpressure in the valve.
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| 5. |
Check that the diaphragm is intact. If the diaphragm is damaged, the overpressure is released.
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| 6. |
Detach the pump.
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| 7. |
Connect the vacuum hose.
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