Power Brake Booster Check Valve
CAUTION:
If the check valve is defective, replace it if an assembly unit together with the vacuum hose. When checking the check valve, keep the check valve fit in the vacuum hose. The check valve is press-fitted inside the vacuum hose at the position of the marking. See Fig 1
.
- Remove the vacuum hose. See Fig 1 .
- Check the operation of the check valve by using a vacuum pump. See CHECK VALVE OPERATION CHECK table. See Fig 2 .
CHECK VALVE OPERATION CHECK
| Vacuum Pump Connection | Accept/Reject Criteria |
|---|---|
| Connection At Brake Booster Side (A) | A Negative Pressure (Vacuum) Is Created And Held |
| Connection At Intake Manifold Side (B) | A Negative Pressure (Vacuum) Is Not Created |