OEM Buick Lucerne Air Inject Check Valve

Buick Lucerne Air Inject Check Valve Parts Questions & Experts Answers

• Check Valve
  12619111
  Q: How to Service and Repair the Air Inject Check Valve on Buick Lucerne?

  A: The first task involves detaching the air cleaner outlet duct and removing Brake Booster Vacuum Hose connected to the Intake Manifold before setting it aside. First disconnect the engine harness electrical connector from the secondary air injection (AIR) shutoff and check valve before raising and supporting the vehicle. Start by unscrewing the bolts that sustain the Intake Manifold cover bracket along with removing the bracket. Then unfasten the air shutoff and check valve pipe to exhaust manifold nuts. Start by lowering the vehicle before removing the air feed tube bracket nut from the throttle body stud followed by disconnection of the air feed tube quick connect fitting from the air shutoff and check valve. Next install the position of the throttle body stud and feed tube before you disconnect bolts from the upper bracket of the shutoff and check valve. The exhaust manifold gasket of the old shutoff air and check valve needs replacement before cleaning its sealing surfaces. A new air shutoff and check valve gasket should be installed on exhaust manifold studs before fitting the air shutoff and check valve . Place the air shutoff and check valve to bracket upper bolts in position before tightening them to 25 n.m (18 lb ft). Place the air feed tube on the throttle body stud and connect the quick connect fitting to the air shutoff and check valve using the air feed tube bracket nut which needs to be tightened to 10 n.m (89 lb in). Next raise the vehicle to install the air shutoff and check valve pipe to exhaust manifold nuts which should be tightened to 10 n.m (89 lb in). After installing the Intake Manifold cover bracket with its bolts you must tighten them to 30 n.m (22 lb ft) while lowering the vehicle. Reinstall the air cleaner outlet duct after you connect the engine harness electrical connector to the air shutoff and check valve then position the Brake Booster Vacuum Hose to the Intake Manifold.