Terex GS90D-4695 Service And Repair Manual

Also see for Genie GS-3390: Maintenance manual Maintenance manual Operator's manual Service and repair manual Service and repair manual

Service and Repair Manual December 2023Fuel and Hydraulic Tanks100 GS™-3390 • GS™-4390 • GS™-5390 Part No. 1325652GT4 Lower the platform onto the safety arm. Turnthe machine off.Crushing hazard. Keep handsclear of the safety arm whenlowering the platform.5 Attach a lifting strap from an overheadsupporting device to the entry ladder on thehydraulic tank side of the machine.6 Remove the entry ladder mounting fasteners.Remove the entry ladder from the machine.Crushing hazard. The entryladder could becomeunbalanced and fall when it isremoved from the machine if it isnot properly supported.7 Remove the retaining fasteners from theaccess plate located behind the hydraulic andfuel tank tray.8 Close the two hydraulic tank shut-off valves atthe hydraulic tank. (if equipped)open closedComponent damage hazard.The engine must not be startedwith the hydraulic tank shut-offvalves in the closed position orcomponent damage will occur. Ifthe tank valves are closed,remove the key from the keyswitch and tag the machine toinform personnel of thecondition.9 Remove the drain plug from the hydraulic tankand completely drain the tank into a suitablecontainer. Refer to Specifications, MachineSpecifications.Bodily injury hazard. Sprayinghydraulic oil can penetrate andburn skin. Loosen hydraulicconnections very slowly to allowthe oil pressure to dissipategradually. Do not allow oil tosquirt or spray.10 Tag, disconnect and plug the two suctionhoses that are attached to the hydraulic tankshutoff valves.11 Tag, disconnect and plug the tank return hoseat the tank.12 Disconnect and plug the T-fitting located atthe tank with the 2 hoses connected to it.13 Remove the hydraulic tank strap retainingfasteners and remove the hydraulic tank strapfrom the machine.14 Support and secure the hydraulic tank to asuitable lifting device.15 Remove the hydraulic tank from the machine.Crushing hazard. The hydraulictank could become unbalancedand fall if it is not properlysupported and secured to thelifting device when it is removedfrom the machine.Component damage hazard. Besure to open the two hydraulictank valves and prime the pumpafter installing the pump.Note: Always use pipe thread sealant wheninstalling the drain plug and strainers.