Genie GR-20J Service Manual

Also see for GR-26J: Operator's manual Installation instructions Operator's manual

Contents

Genie GR-20J Service Manual Manual pdf 81 page image

Section 4 • Repair ProceduresPart No. 227656 GR-20J • GR-26J 4 - 35September 20168-1Hydraulic TankThe primary functions of the hydraulic tank are tocool and deaerate the hydraulic fluid duringoperation.How to Remove the HydraulicTankComponent damage hazard. Thework area and surfaces where thisprocedure will be performed mustbe clean and free of debris thatcould get into the hydraulicsystem.Note: Perform this procedure with the machine instowed position.1 Disconnect the battery pack from the machine.2 Open and remove the turntable cover at thehydraulic power unit side of the machine.3 Working next to the hydraulic tank, remove thefasteners securing the chassis side cover to thechassis. Remove the side cover. Lay the sidecover and fasteners to the side.4 Tag and disconnect the wire harnessconnectors from the function manifold.5 Tag and disconnect the cables from the motor.6 Tag, disconnect and plug the hydraulic hoses atthe function manifold. Cap the fittings on themanifold.Bodily injury hazard. Sprayinghydraulic oil can penetrate andburn skin. Loosen hydraulicconnections very slowly to allowthe oil pressure to dissipategradually. Do not allow oil to squirtor spray.Hydraulic Tank7 Place a suitable container under the hydraulictank. Refer to Section 2,Specifications.8 Locate and remove the hydraulic tank filler cap.Set the filler cap to the side.9 Remove the drain plug and drain all of the oilinto a suitable container.10 Clean up any oil that may have spilled. Properlydiscard the used oil.11 Install the drain plug onto the hydraulic tank andtighten to finger tight.12 Install the filler cap onto the hydraulic tank andtighten to finger tight.13 Remove the clamp securing the hydraulicpower unit to the chassis. Set the clamp to theside.14 Carefully remove the hydraulic tank along withhydraulic power unit from the machine andplace it on a clean work bench.15 Remove the fasteners securing the functionmanifold to the hydraulic tank. Set the fastenersto the side.16 Remove the clamp securing the hydraulicpower unit to the hydraulic tank. Set the clampto the side.17 Remove the hydraulic power unit from thehydraulic tank.Torque specificationsHydraulic oil reservoir drain plug 44 in-lbs5 NmManifold to tank fasteners 40 in-lbs4.5 Nm