ENGINEMAN 1 & CTable 4-1.—Related Propulstion System ComponentsSystem Name/DescriptionMain Reduction Gear, Mounting andCoupling for Gear-Driven Hydraulic OilPump.Propeller Shaft.Interconnecting Hydraulic Oil Piping.Head Tank, Sump Tank and Hydraulic OilSupply plus Associated Components, andFittings.Central Control Station (CCS) Controlsand Indicators.Related propulsion system components, whichare necessary for the operation of a CRP propellerbut which are not part of the CRP propeller arelisted in table 4-1. Let’s look at some of these com-ponents, along with other components, shown intable 4-2.Hub/Blade AssemblyThe propeller’s hub/blade assembly (see figure4-6), attached to the main propulsion propellershaft, provides the mounting for the propellerblades and houses the blade turning mechanismfor rotating and holding the pitch position of theblades. Attached to the after end of the hub bodyare the hub cone and the hub cone end cover.These items form the chamber for the servomotorpiston. The hub body is fitted to the tailshaft byguide pin dowels which also transmit the torqueTable 4-2.—CRP Propeller Hardware ComponentsHUB BLADE ASSEMBLYHYDRAULIC SYSTEMHub Assembly, LGHub assembly. RHBlades (Set of 5). LHBlades (Set of 5). RHVALVE ROD ASSEMBLYPiping, Couplings & Guides, PortPiping, Couplings & Guides, StbdOIL DISTRIBUTION BOXDD Box Assembly. PortDD Box Assembly, Stbd.ELECTRONIC PITCHCONTROL SYSTEMHydraulic Oil Power Module, P/S(each including):Electronic Pitch Control Assembly,P/SSuction Strainer (1)Hydraulic Oil Pump, CouplingFeedback Potentiometer, P/Sand Motor (1)Readout Potentiometer, P/SDuplex Discharge Filters (3)Air Bleed Valves (2)LOCAL PITCH INDICATORPressure Control Assembly, con-sisting of: sequence and reliefvalve, unloading and checkvalve, reducing Valve, andcontrol oil relief valve.Manual Bypass Valve (1)Gauge Panels (2)Manifold Block Assembly, P/S (eachincluding):Electra-hydraulic Servo ControlValve (1)Manual Pitch Control Valve (1)Manual Changeover Valves (2)Standby Hydraulic Oil Pump (geardriven), P/SSuction Strainer (gear pump), P/SReturn Check Valve, P/SPitch Indicating Assembly, P/SEMERGENCY PITCH SETTINGEmergency Hand Pump Assembly,P/SPRAIRIE AIR SYSTEMRotoseal, P/SCheck Valve (hub), LH/RHCheck Valve (OD Box), P/SPrairie Air Tube Assy.. P/SConnectors, Prairie Air, Hub toBlade (Set of 5). LH/RH4-12
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