For 1990-2009 cars

### Removal Procedure

1. Remove the nuts from the combination valve studs.
2. Remove the nuts from the exhaust manifold studs.
3. Remove the combination valve/air pump solenoid assembly studs and gasket.
4. Remove the air pipe.

### Installation Procedure

Notice: Refer to Fastener Notice in the Preface section.

Important: Installation steps must be performed in sequence.

Important: Ensure the gaskets are installed correctly or a leak will occur. If the gaskets are removed from the studs, replace with new gaskets.

1. Install the air pipe onto the exhaust manifold studs.
2. Install the air pipe into the rear air compressor bracket slot.
3. Install the air pump solenoid/combination valve assembly studs into the air compressor bracket through the air pipe flange holes.
4. Install and torque the nuts on the combination valve studs.

Tighten
Tighten the combination valve stud nuts to 7 N·m (62 lb in).

5. Install and torque the nuts on the exhaust manifold studs.

Tighten
Tighten the exhaust manifold stud nuts to 7 N·m (62 lb in).