Terex Genie TZ-50 Service Manual

Also see for Genie TZ-50: Operator's manual

4 - 36 Genie TZ-50 Part No. 824982January 2016Section 4 • Repair Procedures8-4Valve Adjustments -Function ManifoldHow to Adjust theSystem Relief ValveNote: Perform this procedure with the outriggers inthe stowed position.1 Connect a 0 to 5000 psi / 0 to 350 bar pressuregauge to the test port (item G) on the functionmanifold.2 Turn the key switch to ground control and pullout the red Emergency Stop button to theon position at both the ground and platformcontrols.3 Push and hold the yellow function enabledown button. Observe the pressure readingon the pressure gauge. Refer to Section 2,Specifications.4 Release the button. Use a wrench to hold therelief valve and remove the cap (item L).5 Adjust the internal hex socket. Turn it clockwiseto increase the pressure or counterclockwiseto decrease the pressure. Install the relief valvecap.Tip-over hazard. Do not adjustthe relief valve higher thanspecifi ed.6 Repeat step 3 to confi rm the relief valvepressure.MANIFOLDSHow to Adjust thePrimary Boom Down Relief Valve1 Connect a 0 to 5000 psi / 0 to 350 bar pressuregauge to the test port (item G) on the functionmanifold.2 Turn the key switch to ground control and pullout the red Emergency Stop button to theon position at both the ground and platformcontrols.3 Push and hold the yellow function enablebutton. Push and hold the auto level button.Result: The outriggers will lower and adjust tolevel the machine and raise the wheels off theground.4 Push and hold the yellow function enablebutton. Push and hold the primary boom downbutton. Fully lower the primary boom andcontinue to hold the buttons while observingthe pressure reading on the pressure gauge.Refer to Section 2, Specifications.5 Release the buttons. Use a wrench to hold therelief valve and remove the cap (item I).6 Adjust the internal hex socket. Turn it clockwiseto increase the pressure or counterclockwiseto decrease the pressure. Install the relief valvecap.Tip-over hazard. Do not adjustthe relief valve higher thanspecified.7 Repeat step 4 to confi rm the relief valvepressure.