Genie GTH-1056 Service And Repair Manual

Also see for GTH-1056: Operator's manual Service manual Service manual Service manual Maintenance manual

Contents

Genie GTH-1056 Service And Repair Manual Manual pdf 79 page image

April 2017 Service and Repair ManualManifoldsPart No. 1278145 GTH-1056 697-8Valve Adjustments - SecondaryFunction ManifoldHow to Set the Steer System Pres sur eHow to Set the Steer SystemPressureNote: Be sure that the hydraulic oil level is visible inthe inspection glass of the hydraulic tank.1 Install a 0 to 1000 psi / 0 to 100 bar pressuregauge into test port 'TP' at the top of thesecondary function manifold, refer toSecondary Function Manifold Components.2 Start the engine. Allow the engine to idle afterwarming the engine to operating temperature.3 Without operating any machine controls,observe the reading on the pressure gauge.Result: The pressure gauge reads 450 ±25 psi/ 31 ±1.7 bar. The pump is functioningcorrectly.Result: The pressure gauge fails to read 450±25 psi / 31 ±1.7 bar. The pressure settingneeds to be adjusted. Refer to RepairProcedure, How to Adjust the Function PumpPressure.4 Turn the machine off. Remove the pressuregauge from the test port.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.5 Install a 0 to 3500 psi / 0 to 250 bar pressuregauge into test port 'TS' at the top of thesecondary function manifold. Refer toSecondary Function Manifold Components.6 Start the engine. Allow the engine to idle.7 Fully turn and hold the steering wheel in the leftdirection and allow the wheels to fully turn tothe left. Continue holding the steering whileobserving the pressure reading on thepressure gauge.Result: The pressure gauge reads 2500 psi /172 bar. The pressure setting is correct.Proceed to step 12.Result: The pressure gauge fails to read2500 psi / 172 bar. The pressure setting needsto be adjusted. Proceed to step 8.8 Turn the machine off. Hold the steer pressurereducing/relief valve with a wrench andremove the cap.9 Adjust the internal hex socket. Turn itclockwise to increase the pressure orcounterclockwise to decrease the pressure.Component damage hazard. Donot adjust the relief valvepressures higher thanspecifications.10 Install the relief valve cap.11 Repeat this procedure beginning with step 6.12 Turn the machine off. Remove the pressuregauge from the test port.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.