Examination
1. The operation of the brake vacuum pump can be checked with a vacuum gauge.
2. Disconnect the vacuum line from the pump and use a suitable piece of hose to connect a pressure gauge to the pump fitting.
3. Start the engine and allow it to idle, and then measure the vacuum created by the pump. As a guide, you can be guided by the fact that after one minute a minimum vacuum of approximately 500 mmHg should be recorded. Art. If the registered value is significantly less, it is possible that the pump is defective. However, consult your Peugeot/Citroen dealer before declaring the pump to be faulty.
Repair
4. Repair of the vacuum pump is not possible. since no elements for it are supplied separately. If the pump is defective, it must be replaced as an assembly.