Genie Z-30/20N Service Manual

Also see for Z-30/20N: Maintenance manual Maintenance manual Service manual Service and repair manual Service manual

Contents

Genie Z-30/20N Service Manual Manual pdf 86 page image

4 - 36 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N Part No. 139378June 2011Section 4 • Repair ProceduresREV B7-2Valve Adjustments -Function ManifoldHow to Adjust the System ReliefValve1 Connect a 0 to 5000 psi / 0 to 350 bar pressuregauge to the test port on the function manifold.2 Turn the key switch to ground control and pullout the red Emergency Stop button to the onposition.3 Move and hold the function enable toggle switchto either side and move and hold the primaryboom extend/retract toggle switch in the retractdirection with the primary boom fully retracted.Observe the pressure reading on the pressuregauge. Refer to Section 2,Specifications.4 Turn the machine off. Hold the system reliefvalve with a wrench and remove the cap(item R).5 Adjust the internal hex socket. Turn it clockwiseto increase the pressure or counterclockwise todecrease the pressure. Install the relief valvecap.Tip-over hazard. Do not adjustthe relief valve higher thanspecified.6 Repeat steps 2 and 3 to confirm the relief valvepressure setting.How to Adjust the Primary BoomDown Relief Valve1 Connect a 0 to 3000 psi / 0 to 200 bar pressuregauge to the test port on the function manifold.2 Turn the key switch to ground control and pullout the red Emergency Stop button to the onposition.3 Move and hold the function enable toggle switchto either side and move and hold the primaryboom up/down toggle switch in the downdirection with the primary boom fully lowered.Observe the pressure reading on the pressuregauge. Refer to Section 2,Specifications.4 Turn the machine off. Hold the primary downrelief valve with a wrench and remove the cap(item F).5 Adjust the internal hex socket. Turn it clockwiseto increase the pressure or counterclockwise todecrease the pressure. Then install the reliefvalve cap.Tip-over hazard. Do not adjustthe relief valve higher thanspecified.6 Repeat steps 2 and 3 to confirm the relief valvepressure setting.MANIFOLDS