Author: PLC Play Ground
Cylinder Pressure Exceeds Supply? Unequal Areas Can Explain It
Pressure in a trapped cylinder chamber can exceed the supply pressure.
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Hydraulic Pump Sounds Starved? Check the Reservoir Breather Too
A restricted reservoir breather can affect the pump inlet conditions.
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Hydraulics Work Cold but Slow Down Hot? Track Viscosity and Leakage
Temperature-dependent hydraulic speed can reflect changing viscosity, leakage, or control behavior.
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Hydraulic Unit Gets Hot While Doing Nothing? Follow the Bypass Flow
A hydraulic unit can generate substantial heat while the actuator is stationary.
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Pump Is Off—Why Can the Hydraulic Circuit Still Move?
Stopping a hydraulic pump does not establish that stored energy is gone.
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Proportional Valve Ignores Small Commands? Separate Deadband from Hysteresis
Small command changes may fall inside a valve deadband, while direction-dependent response may indicate hysteresis.
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Pneumatic Cylinder Crawls, Then Jumps? Investigate Stick-Slip
A pneumatic cylinder that pauses and jumps at low speed may be showing stick-slip.
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Vacuum Gripper Lets Go Too Late? Check the Blow-Off Sequence
A gripper that picks correctly can still release too slowly.
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Cylinder Drifts with the Valve Off? Off Is Not a Holding Guarantee
A de-energized directional valve does not automatically provide secure load holding.
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Hydraulic Filter Alarm Appears Only at Startup? Check Temperature
A filter indication during cold startup can reflect high fluid viscosity as well as contamination.
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