Vacuum System Leak Test

Vacuum system, leak testing

Vacuum pump (V 18), removing:

- disconnect vacuum line 1 from vacuum pump 2 and seal tightly
- remove instrument panel trim from driver's side lower

Ventilation valves, removing and installing:

- push in membrane on vacuum actuator 4 then push brake pedal down by hand up to pressure point
- release brake pedal
- membrane should not move