Pump & Relief Valve
- Check air pump belt for condition and tension. Belt tension should be 60-100 lbs. with a used belt and 100-150 lbs. with a new belt. Do not pry on pump housing when tightening belt.AIR PUMP RELIEF VALVE PRESSURE
Application Pressure Psi (kg/cm2 ) Celica, Corona, Pickup 5.0-6.4 (.35 -.44) Corolla 4.7-6.8 (.33 -.48) Land Cruiser 5.7-8.5 (.40 -.60) Tercel 3.3-5.6 (.23 -.39) - Disconnect air outlet hose at check valve and install pressure gauge. Start engine, warm to operating temperature, and raise engine speed until relief valve operates. Check that pressure is correct.