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Barko 495B - SE Service Manual
Also see for 495B - SE: Operator's manual
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Service ManualLast Updated - 9/28/2016495B SE (S)36ADJUSTING WORKING PRESSURE (3600 PSI) AND STANDBY PRESSURE (425 PSI)Standby pressurePump compensator Torque Control1. Install an electronic (digital) gauge on the system pressure test port (which is located on the main controlvalve).NOTE: When setting standby pressure, pressure will spike to approx. 3600 PSI before reading 425 PSI. Thiswill ruin a 1000 PSI gauge. Use an electronic (digital) gauge to check standby pressure.2. With engine at low throttle, set standby pressure to 425 PSI (turn screw clockwise to increase,counterclockwise to decrease).3. To adjust pressure, loosen jam nut on pressure control block located on pump with 1/2" wrench. Adjustpressure by turning screw in or out with a 5/32" allen wrench. Retighten jam nut prior to taking pressurereading.4. Install a 5000 PSI gauge on the system pressure test port (located on the fire wall, or the PX port on theupper control valve).5. With engine at low throttle, bottom out the main boom (up) or stick boom (in or out) and set the systempressure on the compensator screw to 3600 PSI (turn screw clockwise to increase, counterclockwise todecrease).The torque control is factory set and generally will not require adjustment. Turning the screw in (clockwise) willincrease the load on the engine by holding the pumps on stroke at a higher pressure.HYDRAULIC PRESSURE ADJUSTMENTSPUMP ADJUSTMENTS (A11VLO-145) |
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