Order of execution
1. Unscrew the inlet bolt and disconnect the inlet hose from the pump and connect a hose with a pressure gauge instead.
2. Start the engine and leave it to idle.
3. Turn the wheels to the stop 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 be damaged. The pressure should be 14,500–15,500 kPa (145–155 kgf/cm2).
4. If the pressure is not as specified, replace the high pressure valve and retest. If the pressure is again not correct, the pump is defective and must be replaced.
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