Bypass valve check, B207E/L
| Bypass valve check, B207E/L | 
| Checks | 
| 1. | Detach the vacuum hose from the bypass valve.   | |
| 2. | Connect pressure/vacuum pump (30 14 883 Pressure/vacuum pump) and generate vacuum pressure in the valve.   | |
| 3. | Check that the diaphragm is intact. If the diaphragm is damaged, the vacuum is relieved. | |
| 4. | Pump up an overpressure in the valve. | |
| 5. | Check that the diaphragm is intact. If the diaphragm is damaged, the overpressure is relieved. | |
| 6. | Detach the pump. | |
| 7. | Connect the vacuum hose. | |

 
		