Air Check Valve/Pipe Replacement - Bank 1

REMOVAL PROCEDURE

CAUTION: Refer to AIR temperature caution in Cautions and Notices.




1. Remove the clamp from the check valve.
2. Disconnect the AIR hose from the check valve.




3. Remove the check valve from the left side AIR pipe.
4. Remove the left AIR pipe from the exhaust manifold.
5. Before replacing a check valve, test the valve for proper operation.
5.1. Install a vacuum pump to the nipple side of the check valve, AIR pump side.
5.2. Pump the vacuum pump to 10 inches Hg and observe the gauge.
5.3. Replace the check valve if the vacuum bleed down to zero within 5 seconds.

INSTALLATION PROCEDURE

NOTE: Refer to Fastener Notice in Cautions and Notices.




1. Install the check valve onto the AIR pipe.

Tighten
Tighten the check valve to the AIR pipe to 23 N.m (17 lb ft).

2. Connect the AIR pipe to the exhaust manifold.

Tighten
Tighten the AIR pipe to the exhaust manifold to 20 N.m (15 lb ft).




3. Install the AIR hose to the check valve.
4. Install the check valve clamp.