Enclave AWD V6-3.6L (2009)
6. 6. Remove the check valve (2) from the brake booster hose that routes to the intake manifold vacuum port (6).
Brake Check Valve #1
Brake Check Valve #2
Brake Hose Tee
Vacuum Draw Direction
Warning
If the brake check valves are NOT installed correctly, an increased amount of brake pedal effort will be required to obtain brake function. The brake
assist system will NOT perform as designed if the check valves are installed incorrectly. Carefully read and perform Steps 7-8 to ensure proper
installation of the brake check valves.
Note
If necessary, a small amount of denatured alcohol can be used as an assembly aid for installing the vacuum hose to the manifold vacuum port. Do
not use soap.
7. Install a new check valve (1) to the brake booster hose that routes to the power brake booster auxiliary pump (3). Ensure the arrow on the check
valve (1) points toward the power brake booster auxiliary pump (3) and away from the brake hose tee. Refer to illustration. Ensure the
hose is pushed over the check valve barbs and onto the serrated portion of the check valve.
Check Valve #2