c.If pressure does not rise to the specified psi, there are two possible causes, a worn pump or a defectiverelief valve.d.Have someone raise the vehicle engine speed about 800 to 1000 rpm while you watch the gauge. If thepressure rises somewhat as the engine is speeded up, the cause is most likely the pump.e.If there is no rise in the pressure when engine speed is increased, the main relief valve should besuspected.5-6TROUBLESHOOTING5-6.1TroubleshootingGuide. Refer to Figure 5-5 for troubleshooting.5.Troubleshooting GuideFigure 5-5. Troubleshooting Chart5-12
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