AvBook Intro/notes A/W Sect1 - Shell

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AEROSHELL FLUID 41194Hydraulic FluidsAeroShell Fluid 41 is a mineral hydraulic oil manufactured to a very highlevel of cleanliness, and possesses improved fluid properties. AeroShellFluid 41 contains additives which provide excellent low temperature fluidityas well as exceptional anti-wear, oxidation - corrosion inhibition and shearstability. In addition metal de-activators and foam inhibitors are included inthis high viscosity index fluid to enhance performance in hydraulicapplications. AeroShell Fluid 41 is capable of wide temperature rangeoperation.AeroShell Fluid 41 is dyed red.APPLICATIONSAeroShell Fluid 41 is intended as a hydraulic fluid in all modern aircraftapplications requiring a mineral hydraulic fluid. AeroShell Fluid 41 isparticularly recommended where use of a "superclean" fluid can contributeto improvements in component reliability, and can be used in aircraftsystems operating unpressurised between –54°C to 90°C and pressurisedbetween –54°C to 135°C.AeroShell Fluid 41 should be used in systems with synthetic rubbercomponents and must not be used in systems incorporating natural rubber.Refer to the General Notes at the front of this section for furtherinformation.AeroShell Fluid 41 is compatible with AeroShell Fluids 4, 31, 51, 61 and71 and SSF/LGF.Chlorinated solvents should not be used for cleaning hydraulic componentswhich use AeroShell Fluid 41. The residual solvent contaminates thehydraulic fluid and may lead to corrosion.SPECIFICATIONSU.S.BritishApproved MIL-PRF-5606H*(both U.S. and European production)Approved DEF STAN 91-48 GradeSuperclean* (European productiononly)Meets DEF STAN 91-48 GradeNormal (European production only)Equivalent to DEF STAN 91-48Grades Superclean* & Normal(U.S. production only)French Approved DCSEA 415/ARussianNATO CodeJoint Service Designation*Superclean gradesAnalogue to AMG-10H-515* (equivalent H-520)OM-15* (equivalent OM-18)The British specification DEF STAN 91-48 covers two grades (normal andsuperclean) of mineral hydraulic fluid which differ only in their cleanlinesslimits. AeroShell Fluid 41 is manufactured to meet the supercleanrequirements and thus it also meets the requirements of the normal grade.Hydraulic Fluids195www.shell.com/aviationThe AeroShell BookEdition 18 2003
PROPERTIES MIL-PRF-5606H TYPICALPROPERTIES MIL-PRF-5606H TYPICALU.S.ProductionEuropeanProductionU.S.ProductionEuropeanProductionOil type Mineral Mineral MineralCopper corrosion 2e max lb 2b196Hydraulic FluidsKinematic viscositymm 2 /s@ 100°C 4.90 min 6.13 5.30@ 40°C 13.2 min 15.68 14.1@ –40°C 600 max 384 491@ –54°C 2500 max 1450 2300Viscosity index – 214 Over 200Flashpoint, PenskyMartin closed cup °C 82 min 104 105Autoignitiontemperature °C – 230 230Pourpoint °C –60 max
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Page 17: TYPICAL TEMPERATURE/VISCOSITY CURVE

AvBook Intro/notes A/W Sect1 - Shell

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