Part No. 75861 Genie Z-60/34 4 - 45November 2003 Section 4 • Repair ProceduresREV A8-4Valve Adjustments -Function ManifoldHow to Adjust the SystemRelief ValvePerform this procedure with theboom in the stowed position.1 Connect a 0 to 5000 psi / 0 to 345 bar pressuregauge to the test port (item Z) on the functionmanifold.2 Start the engine from the ground controls.3 Hold the function enable switch to the high rpmposition and activate and hold the retract switchwith the boom fully retracted.4 Observe the pressure reading on the pressuregauge. Refer to Section 2, Specifications.5 Turn the engine off. Use a wrench to hold therelief valve and remove the cap (item T).6 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.7 Repeat steps 2 through 5 and recheck reliefvalve pressure.8 Remove the pressure gauge.How to Adjust the Primary BoomDown Relief ValvePerform this procedure with theboom in the stowed position.1 Connect a 0 to 5000 psi / 0 to 345 bar pressuregauge to the test port (item Z) on the functionmanifold.2 Start the engine from the ground controls.3 Hold the function enable switch to the high rpmposition and activate and hold the primaryboom down switch with the primary boom fullylowered.4 Observe the pressure reading on the pressuregauge. Refer to Section 2, Specifications.5 Turn the engine off. Use a wrench to hold therelief valve and remove the cap (item AE).6 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.7 Repeat steps 2 through 5 and recheck reliefvalve pressure.8 Remove the pressure gauge.MANIFOLDS
