REMOVAL & INSTALLATION

Air Pump

1. If applicable, remove the air cleaner assembly from the carburetor.
2. Disconnect the air supply hoses from the pump.
3. Loosen and remove the air pump strap bolt.
4. Push the pump toward the engine to slacken belt tension, then remove the drive belt from the pulley.

   Fig. 1: Air pump mounting — RX-7

5. Unfasten the pump securing bolts and remove the pump.

   CAUTION
   Do not pry on the air pump housing during removal and do not clamp the housing in a vise once the pump has been removed. Any type of heavy pressure applied to the housing will distort it.

   To install:

6. Position the pump on its mounting, then install the mounting bolts. Snug the bolts just enough to allow movement for adjustment.
7. Install and properly tension the drive belt by moving the air pump, then tighten the bolts.

   NOTE: While applying 22 lbs. of pressure halfway between the water pump and air pump pulleys, the belt should deflect 0.28–0.35 in. (7–9mm).

8. Connect the air supply hoses.
9. If applicable, install the air cleaner assembly.

Air Control Valve

1979–85 CARBURETED RX-7

1. Remove the hot air duct.
2. Disconnect the air hose from the valve.
3. Disconnect the electrical lead from the port air solenoid valve.
4. Unfasten the retaining bolts and remove the valve.

   To install:

5. Position the air control valve and secure with retaining bolts.
6. Connect the port solenoid valve electrical lead.
7. Connect the air hose to the valve and install the hot air duct.

1984–89 FUEL INJECTED RX-7

1. On 1984–85 models, remove the throttle chamber funnel.
2. Detach all solenoid valve connectors. (The number of connectors will vary depending on the year.)

   Fig. 2: Air control valve mounting — fuel injected RX-7

3. Unfasten and remove the valve.

   To install:

4. Position the air control valve and secure with retaining bolts.
5. Fasten all the wiring connectors.
6. On 1984–85 models, install the throttle chamber funnel.

Check Valve

1. Remove the air control valve, as described earlier in this section.
2. Unscrew and remove the check valve and gasket from the manifold.

   To install:

3. Screw the check valve into the manifold, using a new gasket.
4. Install the air control valve, as described above.

Air Injection Nozzle

1. Remove the gravel shield from underneath the car.
2. Remove the oil pan removal procedure, as detailed in Section 3 of this manual.
3. Unbolt the air injection nozzles from both ends of the rotor housing.

   To install:

4. Attach and fasten the air injection nozzles to both ends of the rotor housing.
5. Install the oil pan, as detailed in Section 3.
6. Fasten the gravel shield to the bottom of the car.