MEASURING& ADJUSTING PRESSURES 2.2 MAIN PILOT CIRCUIT A. MainPilot Relief Valve Pressure MeasurementProcedures 1, Performmachinepreparation proceduresas described in 2.1 MACHINE PREPARATION. 2. Start engineandplacethrottle control in HiIdle position. SeeFigure2.5. 3, Place KPSSModeSwitch in "H"-Mode. See Figure2.5. 4. Donot operateany controls. Thenread the pressure gauge. Recordreading and compare to chart for specific modelbeingtested on pages2-15 through2-22. B. MainPilot Relief ValveAdjustment Procedures 1. Locatethe MainPilot Relief Valvemounted to the side of the HydraulicOil Tankin the Manifold Assembly. SeeFigure 2.6. 2. Remove protective cap. SeeFigure 2.7. Loosenthe adjusting screwIocknut. See Figure2.8. 3. Adjustuntil specified pressureaccordingto properchart for specific machinebeing adjusted is achieved. ’ NOTE 1 CompleteTurn Adjusts PressureApproximately: 2 (200 psi) 14.4kg/cm I/4 TurnAdjustsPressureApproximately: 2 (51.2 psi) 3.6kg/cm
ICO"F’G°",T,O. I ~-~"~’CE I FORSK150THRUSK4601//I -~ ~"/--~/1 J I ~" "
THROTrLE CONTRQL~. IN "HI" ~"~
KPSS
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FIGURE2.5
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/ ,,,, I FIGURE2.6
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PROTECTIVE ~ ~ CAP
4. After correct pressureis obtained,tighten adjusting screwIocknut,beingcareful not to overtighten. SeeFigure2.8. 5. Install protectivecapandtighten. Becareful not to overtightencap. SeeFigure2.7. 6. Verify pressureafter tighteningIocknutandcap. FIGURE2.7
j FIGURE2.8 S/Or~-O~-,9
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