Air Pump Test
- Remove air cleaner. Check all hoses and connections for proper condition. Check air pump belt tension and adjust as necessary.
- With transmission in neutral or "P" and parking brake set, start and warm engine to normal operating temperature. Stop engine and detach hose(s) from air pump to air by-pass valve at the by-pass valve.
- Insert air pump pressure gauge (T75L-9486-A or equivalent) into end of hose disconnected from by-pass valve. Clamp pressure gauge in place. Connect tachometer and start engine.
- Slowly increase engine speed to 1000 RPM, watching pressure gauge. Pressure should be 2.25 psi (15.8 kg/cm2
).NOTE: If special pressure gauge tool is not available, raise engine speed to 1500 RPM and place hand over open end of hose; air pressure should be felt and heard.
- If air pressure does not meet indicated requirements, replace air pump and repeat test.