7 - 60 Genie S-80 & Genie S-85 Part No. 34032Service Manual - First EditionSection 7 - Repair Procedures4WD DRIVE MANIFOLDPlug 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 Nm19-2Valve AdjustmentsHow to Adjust the ChargePressure Relief Valve1 Connect a 0 to 600 psi (0 to 41 bar) pressuregauge to the test port located on the drivemanifold.Bodily injury hazard. Sprayinghydraulic oil can penetrate andburn skin. Loosen hydraulicconnections very slowly to allowthe oil pressure to dissipategradually. Do not allow oil tosquirt or spray.2 Start the engine from the platform controls.3 Drive the machine slowly in either directionand observe the pressure reading on thepressure gauge.4 Turn the engine off. Hold the relief valve andremove the cap (index 2).5 Adjust the internal hex socket. Turn it clockwiseto increase the pressure or counterclockwiseto decrease the pressure. Then install thevalve cap.6 Restart the engine. Drive the machine in eitherdirection and recheck the valve pressure.7 Turn the engine off, then remove thepressure gauge.Relief valve specificationsPressure 250 psi17 bar
