Equipment Condition Assessment for Hydraulic Systems

We conduct hydraulic system assessments as integrated system evaluations rather than individual component checks. Fluid assessment includes bottle sampling from the reservoir return line (representing system condition) with ISO 4406 particle count analysis, Karl Fischer water content testing, viscosity measurement, acid number, and visual appearance evaluation. Pump assessment includes discharge pressure and flow measurement at full load, case drain flow measurement (for piston and vane pumps), noise evaluation for cavitation indicators, and inlet vacuum or pressure measurement. Valve assessment includes directional valve function check (spool actuation, return spring function), proportional and servo valve response testing with documented step response and hysteresis values, relief valve set-point verification, and check valve function testing. Actuator assessment includes external leak inspection, cycle time measurement for internal leakage indication, rod surface condition evaluation (where visible), and cushion function check. Accumulator assessment includes pre-charge pressure measurement and comparison to system requirements. Filtration assessment includes filter element differential pressure reading, bypass indicator status, and element condition (where inspection is possible without contamination risk). Cooling assessment includes cooler approach temperature measurement. Hose assessment follows SAE J1273 criteria. Each system receives a comprehensive condition report with ISO 4406 cleanliness status, component condition grades, identified deficiencies and contamination sources, and prioritized recommendations.