Operator’s Manual38 GTH-4013 SX - GTH-4017 SX - GTH-4013 EX - GTH-4017 EX Part No. 57.0009.0540First Edition - Second PrintingDescription Of The MachineGTH-4017 SX GENERAL DESCRIPTIONThe machine mainly consists of a mobile carriage,equipped with an operator’s cabin and a telescopicboom with a load handling attachment articulationcapable to handle and carry payloads not exceedingthe rated capacity of the machine.The mechanical power necessary to move themachine and to operate the load handling mechanismis provided by a diesel engine installed on the rightside of the machine and controlled by a mechanicalpedal located inside the operator’s cabin.The diesel fuel feeding the engine is contained ina steel tank located on the left side of the chassis,immediately behind the operator’s cabin.The engine powers three hydraulic pumps.The bigger one, which is a piston type variabledisplacement pump, is directly flanged to the engineflywheel housing and is hydraulically linked to apiston type variable displacement hydraulic motor,which generates the torque necessary for themachine translation.These two units are the main components of thehydrostatic transmission which is mechanicallylinked to the machine axles and wheels. In particular,the hydraulic motor is flanged to a mechanical dropbox installed on a central structural beam linking thetwo sides of the chassis.The mechanical torque generated by the hydrostaticmotor and passing through the drop box, istransmitted to the front and rear axles by two driveshafts located on the machine centerline so providinga 4X4 wheels drive capability.Both the hydrostatic pump and motor are hydraulicallycontrolled and automatically adjust their functioningparameters against the engine rpm and the powerrequested by the pumps.The four wheels are equipped with tires suitable tooperate the machine in all the working conditionswhich have been foreseen for this model andcapable to withstand the maximum loads generatedby the machine weight and payloads.The second gear type pump, flanged on the backof the bigger one and mechanically linked to thatby a passing through PTO, produces the flow andpressure to move the telescopic boom and the loadhandling attachment articulation, to operate the frontstabilizers and the chassis leveling system and topower the steering system.The third gear type pump is flanged to the enginedistribution lateral PTO and powers the servicebrakes system.These three pumps are fed through oil suction lineswhich are linked to the hydraulic oil tank installed onthe bottom center of the chassis.This oil tank, steel made, is provided also with theoil filter package (return type), the oil level gaugesand the oil charging cap.The engine and the three pumps are installed insidea suitable engine compartment consisting of a fixedlower bay made in steel and of a upper bonnet whichcan be opened to allow servicing activities in theengine compartment.The engine compartment also includes the engineand hydraulic system cooler, provided with aninternal coolant expansion tank, the air intake ductand filter, the electrical alternator, the battery, thefuel and the engine oil filters and the engine exhaustmuffler.The engine exhaust duct is then routed from thebottom of the engine compartment to the lateralback side of the chassis with a geometry capableto eject the engine exhaust gas up and back fromthe machine.The telescopic boom, hinged on the back of thechassis, mainly consists in four steel tubes havingrectangular sections and provided with a loadhandling attachment articulation for payload stuffing/unstuffing and transportation purposes.The outer section is hinged in the back top area of thechassis and moved by an hydraulic cylinder linkedbetween its bottom surface and the central bottomarea of the chassis.The extension/retraction of this cylinder producesthe boom outer section to rotate between the boomup and down limits.The boom bigger intermediate section can telescopewith respect the outer one by a boom extensioncylinder which is installed on the top of the boom.The smaller intermediate and the inner sections aremoved by a chains system made by special chains,specifically designed for load lifting purposes, and byCourtesy of Crane.Market
