BS ISO 12334:2000

Foreword
1 Scope
2 Normative references
3 Functional requirements
      3.1 Hydraulic fluid
      3.2 Rated discharge pressure
      3.3 Maximum full-flow pressure
      3.4 Inlet pressure
             3.4.1 Rated inlet pressure
             3.4.2 Cavitation pressure
             3.4.3 Minimum inlet pressure
      3.5 Case drain pressure
             3.5.1 Rated case-drain pressure
             3.5.2 Case proof-pressure
      3.6 Case drain flow
      3.7 Rated temperature
      3.8 Maximum displacement
      3.9 Rated delivery
      3.10 Rated speed
      3.11 Endurance
      3.12 Torque
      3.13 Efficiency
      3.14 Discharge pressure pulsations
      3.15 Variable delivery control
             3.15.1 General
             3.15.2 Response time
             3.15.3 Stability
      3.16 Maximum transient pressure
      3.17 Depressurization
      3.18 Balance
      3.19 Adjustment
      3.20 Safety wire sealing
      3.21 Directionally critical components
      3.22 Environmental requirements
      3.23 Installation requirements
             3.23.1 Dimensions
             3.23.2 Mass
             3.23.3 Mounting
             3.23.4 Drive coupling
             3.23.5 Ports
      3.24 Detail requirements
             3.24.1 Material
             3.24.2 Metals
             3.24.3 Corrosion protection
             3.24.4 Castings
             3.24.5 Seals
             3.24.6 Identification marking
             3.24.7 Design and construction
      3.25 Maintainability
             3.25.1 Maintenance concept
             3.25.2 Useful life and storage conditions
      3.26 Reliability
             3.26.1 Equipment compliance
             3.26.2 Requirements
4 Quality assurance provisions
      4.1 Responsibility for inspection
      4.2 Classification of tests
5 Qualification tests
      5.1 General
      5.2 Qualification procedure
             5.2.1 Detail specification
             5.2.2 Qualification by analogy
             5.2.3 Pump qualification test report
      5.3 Samples and programme of qualification tests
      5.4 General conditions for qualification tests
      5.5 Acceptance tests
      5.6 Dimensional check
      5.7 Proof-pressure and overspeed test
      5.8 Calibration
             5.8.1 Pump inlet pressurized
             5.8.2 Flow rate and driving torque values
             5.8.3 Minimum operating speed
      5.9 Maximum pressure, response time and pressure
             pulsation tests
             5.9.1 General
             5.9.2 System impedance
             5.9.3 Maximum pressure test
             5.9.4 Determination of response time
             5.9.5 Pressure pulsation test
      5.10 Heat rejection test
             5.10.1 Principle
             5.10.2 Determination of heat rejection
      5.11 Vibration tests
             5.11.1 Mounting of the test pump
             5.11.2 Pump operating during vibration tests
             5.11.3 Resonant frequency vibration test
             5.11.4 Cyclic frequency vibration test
             5.11.5 Other vibration tests
      5.12 Low temperature test
      5.13 Endurance testing
             5.13.1 Test programme
             5.13.2 Filtration for normal endurance tests
             5.13.3 Filter check
             5.13.4 Calibration
             5.13.5 Start-stop cycles
             5.13.6 Pump case pressure cycles
             5.13.7 Air ingestion
             5.13.8 Thermal cycles
             5.13.9 Thermal shock
             5.13.10 Hydraulic fluid
             5.13.11 Failure of parts
      5.14 Cavitation test
      5.15 Drive Coupling shear test
      5.16 Teardown inspection
6 Acceptance tests
      6.1 General
      6.2 Examination of the product
      6.3 Test programme
             6.3.1 Break-in run
             6.3.2 Proof-pressure and overspeed tests
             6.3.3 Teardown inspection examination
             6.3.4 Break-in run
             6.3.5 Functional tests
             6.3.6 External leakage test
             6.3.7 Pressure control test
             6.3.8 Calibration
             6.3.9 Filter patch test
7 Storage and packaging

Defines general requirements for pressure-compensated, variable delivery hydraulic pumps, to be used in aircraft hydraulic systems at 35,000 kPa. To be used in conjunction with detail specifications relative to each pump model.