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Transmission hydraulic system "h" series medium wheel loader implement hydraulic system "h" series medium wheel loader tilt control valve dump pressure compensator and load check valve proportional priority, pressure compensator steering system block
TRANSMISSION HYDRAULIC SYSTEM NEUTRAL Main Relief Valve Powe Torque Converter Torque Converter Outlet Relief Valve a | HỊ PT CT yt LJ Torque Converter Inlet Relief Valve Filter Transmission Pump Screen Group Magnet Tank Cooler aim B | a Ae H Lh = To Transmission Bearing Lubrication TRANSMISSION HYDRAULIC SYSTEM FIRST SPEED Main Relief Valve b Powe i ll Filter Transmission Pump Magnet ju xà | FOURTH SPEED a C r _Ì Tank Torque Torque Converter Converter Outlet Relief Valve q Torque Converter Inlet Relief Valve Screen Group FORWARD Ay CT | is Cooler cm B | bJ Pe aint H Lh = To Transmission Bearing Lubrication TRANSMISSION HYDRAULIC SYSTEM SECOND SPEED FORWARD Main Relief Valve Power Train ECM Lu i Lận Torque Torque Converter Converter Outlet Relief Valve cÍ tr | Ao aim! | HỊ PHÌ Yi Pe ca Torque Converter Inlet Relief Valve Filter Transmission Pump Screen Group ~J Magnet = `R i ' FOURTH SPEED Cooler h E = To Transmission Bearing Lubrication TRANSMISSION SECOND Main Relief Valve Power Train SPEED REVERSE Torque Converter Torque Converter Outlet Relief Valve bea: Torque Converter Inlet Relief Valve Filter Transmission Pump Screen Group Magnet HYDRAULIC SYSTEM „ pl in `à A FOURTH SPEED | Tank To Transmission Bearing Lubrication “H" SERIES MEDIUM WHEEL LOADER IMPLEMENT HOLD Tilt Inlet Manifold HYDRAULIC SYSTEM Ride Cylinder Auxiliary Control Accumulator Lift Function Head End Solenoid valve Tilt Antidrift Valve Line Relief Valves Hydraulic Lockout Valve Lift Antidrift Valve Rod Raise Pilot Solenoid Valve Tilt Back Pilot Solenoid Valve Lift Spool End Solenoid Valve Pressure Compensator Pilot Accumulator Head End Solenoid Valve Ride Control Relief Valve Valve Auxiliary Spool Tilt Spool => Cover Manifold Pressure Compensator Valve Screen Resolver Valve Balance Valve Steering Pilot Supply Resolver Valve Resolver Valve (CCS Only) Pressure Valve Pressure Reducing Valve Signal Relief Signal Duplication Valve Valve Dump Pilot Solenoid Valve Case Drain Filter Choke Check Valve / Line Relief Makeup Valve |e rp _— Feeder Passage Dump Pilot Solenoid Valve Rackback Pilot Solenoid Valve Supply Passage "H" SERIES MEDIUM WHEEL LOADER TILT CONTROL VALVE DUMP To Signal Duplication Valve From Signal Duplication Valve From Resolver Network From Head , End of Cylinder To Rod End of Cylinder aos Pressure Compensator Tilt Antidrift Valve Valve Bridge Passage Line Relief and Makeup Valve Line Relief and Makeup Valve l nternal IP Passage Feeder Control Spool Passage Tilt Back Pilot Solenoid Valve O Supply Passage Dump Pilot Solenoid Valve PRESSURE COMPENSATOR AND LOAD CHECK VALVE HOLD From Signal Duplication Valve —— ZITA ) From Head End =—r To Signal Duplication Valve rom Resolver Resolver Network Networ To Rod End of Cylinder Load Check of Cylinder Spool " Pressure Tilt Antidrift Compensator Valve Valve Bridge Passage Line Relief fo and Line Relief and Makeup Valve Makeup Valve Internal Passage iD Control Spool Tilt Back Pilot Solenoid Valve > I= Feeder —_—"Passage Í nh q Dump Pilot Solenoid Valve D Supply Passage PRESSURE COMPENSATOR AND LOAD CHECK VALVE LOAD CHECK OPERATION To Signal Duplication Valve From Signal Duplication Valve From Resolver Network From Head End of Cylinder To Rod E © Rod End of Cylinder Tilt Antidrift Valve Load Check Spool Pressure Compensator Valve Bridge Passage Line Relief and Makeup Valve Line Relief and Makeup Valve Internal Passage Control Spool Feeder Passage Dump Pilot Tilt Back Pilot Solenoid Valve Solenoid Valve Supply Passage PRESSURE COMPENSATOR AND LOAD CHECK VALVE PRESSURE COMPENSATOR OPERATION From Signal Duplication Valve To Signal Duplication Valve From sGyimde Hàm From Head End Resolver Network Spool Load Check Compensator Valve Tilt Anti-drift Orifices Valve Bridge Passage Line Relief and Makeup Valve Line Relief and Makeup Valve Int nternal IP Passage Feeder Control Spool Passage Tilt Back Pilot Dump Pilot Solenoid Valve Solenoid Valve Supply Passage STEERING SYSTEM GRADUAL Left —— — — string Cylinders LEFT TURN Right Neutralizer Neutralizer Valve Valve Selector Spool Crossover Relief Valve Steering Pump Secondary Steering Diverter Valve || _Ì |L - )[|( |Orifices! ) || ( Hand Metering Unit — Seconday Steering Pump and Motor | | wWI{RLAITEATIAIM hw Fg Flow Control Orifice "me —T1z ———————T Mechanical Linkage —-\-— — j}-\-— -— - — Back-up Relief Valve Directional Spool STEERING SYSTEM FULL LEFT TURN (STEERING NEUTRALIZED) Left ——~~——~~——~~ Neutralizer Valve Right Selector Neutralizer Valve Steering —T1 Pump Secondary Steering Spool steering Cylinders Crossover Relief Valve "“"“—= ———~~~——~~ I l I I Diverter Valve j| _ l :— Í |) (| Orifices |) l I ——C Hand Metering Unit — Secondary Steering Pump and | Motor § ¡ Al||Èl4l|!rll4lM)›A Fi —-À — —-1 Flow Control Orifice —— —_} -4 — —_ Mechanical Linkage —`-— — — Back-up Relief Valve Directional Spool ... Supply Passage "H" SERIES MEDIUM WHEEL LOADER TILT CONTROL VALVE DUMP To Signal Duplication Valve From Signal Duplication Valve From Resolver Network From Head , End of Cylinder To Rod End of Cylinder... Valve PRESSURE COMPENSATOR AND LOAD CHECK VALVE HOLD From Signal Duplication Valve —— ZITA ) From Head End =—r To Signal Duplication Valve rom Resolver Resolver Network Networ To Rod End of Cylinder... Passage PRESSURE COMPENSATOR AND LOAD CHECK VALVE LOAD CHECK OPERATION To Signal Duplication Valve From Signal Duplication Valve From Resolver Network From Head End of Cylinder To Rod E © Rod End of