Execution order
1. Loosen the supply bolt and disconnect the supply hose from the pump and connect a hose with a pressure gauge in its place.
2. Start the engine and let it idle.
3. Turn the wheels all the way in any direction, check the pressure on the pressure gauge and immediately turn the wheels to their original position. This operation should take no more than 30 seconds, otherwise the pump may fail. The pressure should be 14,500–15,500 kPa (145–155 kgf/cm²).
4. If the pressure is different from the specified, replace the high pressure valve and recheck. If the pressure is still not correct, the pump is faulty and must be replaced.