Vacuum Check Valve: Service and Repair

17.25.02 Valve - Vacuum Activation - Secondary Air Injection (SAI)

This procedure is also applicable to the gasket.

Before disconnecting the battery, ensure all text and cautions in the battery disconnection section are observed.

Remove
1. Position vehicle on lift.
2. Disconnect battery earth lead.
3. Remove air intake hose.
4. Drain cooling system.





5. Release clip, disconnect radiator bottom hose from thermostat housing and remove bolt securing 'P' clip.





6. Disconnect vacuum pipe and pressure pipe from vacuum activation valve.
7. Remove 2 nuts, remove vacuum activation valve and discard gasket.

Refit
1. Clean SAI pipe and vacuum activation valve mating faces.
2. Fit new gasket to SAI pipe.
3. Fit vacuum activation valve to SAI pipe. Fit and tighten 2 nuts.
4. Fit vacuum pipe and pressure pipe to vacuum activation valve.
5. Connect radiator bottom hose to thermostat housing and secure with clip.
6. Fill cooling system.
7. Connect air intake hose.
8. Connect battery earth lead.