7 - 42 Genie Z-45/22 Part No. 32960Service Manual - Second EditionSection 7 - Repair ProceduresFUNCTION MANIFOLD6 Restart the engine. Hold the retract switch andrecheck the valve pressure.SpecificationsMain relief valve pressure 2200 psi / 152 barHow to Adjust the Primary orSecondary Boom Down ReliefValve1 Connect a 0 - 3000 psi (0 to 206 bar) pressuregauge to the diagnostic nipple on the functionmanifold.2 Start the engine from the ground controls andthen fully lower the boom to be adjusted.3 Hold the primary or secondary boom up/downswitch in the down position and observe thepressure reading on the pressure gauge.4 Turn the engine off. Hold the relief valve andremove the cap (item 17 for primary boom,item 18 for secondary boom).5 Adjust the internal hex socket. Turn it clockwiseto increase the pressure or counterclockwise todecrease the pressure. Then reinstall the reliefvalve cap.Tip-over hazard. Do not adjust therelief valves higher thanrecommended. They are set toprevent a tip-over or damage to liftlinkage.6 Restart the engine. Hold the primary orsecondary boom up/down switch in the downposition and recheck the valve pressure.SpecificationsRelief valve pressure 1200 psi / 83 bar10-2Valve Adjustments - FunctionManifoldHow to Adjust the Main ReliefValve1 Connect a 0 - 3000 psi (0 to 206 bar) pressuregauge to the diagnostic nipple on the functionmanifold.2 Start the engine from the ground controls andthen completely retract the primary boom.3 Hold the retract switch and observe thepressure reading on the pressure gauge.4 Turn the engine off. Hold the relief valve andremove the cap (item 28).5 Adjust the internal hex socket. Turn it clockwiseto increase the pressure or counterclockwise todecrease the pressure. Then reinstall the reliefvalve cap.Tip-over hazard. Do not adjust therelief valves higher thanrecommended. They are set toprevent a tip-over or damage to liftlinkage.Plug Torque SpecificationsDescription Hex Size TorqueSAE No. 2 1/ 8 50 in-lbs / 6 NmSAE No. 4 3/ 16 13 ft-lbs / 18 NmSAE No. 6 1/ 4 18 ft-lbs / 24 NmSAE No. 8 5/ 16 50 ft-lbs / 68 NmSAE No. 10 9/ 16 55 ft-lbs / 75 NmSAE No. 12 5/ 8 75 ft-lbs / 102 Nm800-610-4101ActionRental.com
