ION L4-2.2L VIN F (2004)
Vacuum Brake Booster Check Valve: Service and Repair
Vacuum Brake Booster Check Valve and/or Hose Replacement
Removal Procedure
1. Disconnect the brake booster vacuum check valve (1) from the brake booster.
2. If the vacuum check valve (1) needs to be separated from the vacuum hose (3), release and reposition the clamp (2) on the vacuum hose (3) and
remove the check valve (1) from the hose (3).
3. If replacing the vacuum check valve (1), remove the grommet (4) from the brake booster and discard the grommet.
4. If vacuum hose removal is necessary, and if the vehicle is equipped w/ RPO M75, release the vacuum hose from the retaining clip (1).
5. If removing the vacuum hose, release the vacuum hose connector retainer, then disconnect the connector from the vacuum port on the engine
intake manifold.
Take note of the vacuum hose routing, then remove the vacuum hose from the vehicle.
Installation Procedure
Important: A small amount of denatured alcohol can be used as an assembly aid when installing the vacuum check valve and/or grommet. Do NOT
use soap.