7 - 66 Genie Z-45/22 Part No. 32960Service Manual - Second EditionSection 7 - Repair Procedures4WD DRIVE MANIFOLD19-2Valve AdjustmentsHow to Adjust the ChargePressure Relief Valve1 Connect a 0 to 600 psi (0 to 41 bar) pressuregauge in between one of the medium pressurehydraulic hoses and the medium pressurehydraulic oil filter.Bodily injury hazard. Sprayinghydraulic oil can penetrate andburn skin. Loosen hydraulicconnections very slowly to allowthe oil pressure to dissipategradually. Do not allow oil to squirtor spray.2 Start the engine from the platform controls.3 Drive the machine in either direction andobserve the pressure reading on the pressuregauge.4 Turn the engine off. Hold the relief valve andremove the cap.5 Adjust the internal hex socket. Turn it clockwiseto increase the pressure or counterclockwise todecrease the pressure. Then reinstall the valvecap.6 Restart the engine. Drive the machine in eitherdirection and recheck the valve pressure.7 Turn the engine off, then remove the pressuregauge.SpecificationsRelief valve 320 psi / 22 barPlug 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
