Checking the bypass valve (B235R, B205L/R)
Checking the bypass valve (B235R, B205L/R) |
1. |
Disconnect the vacuum hose from the bypass valve.
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2. |
Connect
30 14 883 Pressure/vacuum pump
and create a negative pressure in the valve.
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3. |
Make sure the diaphragm is undamaged. If it is, it will not hold the vacuum.
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4. |
Repeat steps 2 and 3, this time creating positive pressure.
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5. |
Disconnect the pump.
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6. |
Connect the vacuum hose.
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