Norac UC7 - Hydraulic Installation; Expansion Block Assembly

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5  HydraulicInstallation
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Ensure all pressure has been bled from the system before disconnecting any lines or fittings.Hydraulic
pressure will exist on the wing tilt circuits unless the wings are being supported by other means.The
hydraulicinstallationmaybeperformedwiththewingsintransportposition,restingonthegroundorwith
thetiltcylindersfullyextended.
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Component failure due to oil contamination is not covered under the NORAC system warranty. It is
recommendedthataqualifiedtechnicianperformthehydraulicinstallation.
5.1. ExpansionBlockAssembly
1. Removethefour4MBPplugsfromthe3stationvalveblock(Figure4).
2. Coat the four o‐rings in hydraulic oil and install them into the expansion  block.Ensure the o‐rings are
seatedproperly.
3. Attachtheexpansionblocktothe3stationblockusingtheincludedspringwashersandbolts. 
4. Tightentheboltsto31ft‐lbs(42Nm).
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Figure4:NORACExpansionBlockAssembly