Steering System223Service Manual – Advance 7765 / Nilfisk CR1500TroubleshootingProblem Cause CorrectionThe steering“wanders”.Backlash in the spur gearand rackAdjust the rack so it’s closer to the spur gear.The steering is hardor “jerky”.Not enough oil to thesteering systemCheck the pump output and correct as necessary.Check the priority flow divider and correct/replace asnecessary.Removal and InstallationWarning! Before removing or reinstalling any machine components, make sure the key switchis off, the key is removed from the machine and the parking brake is engaged.Note: If the steering cylinder is removed, mark the teeth where the rack engages the spur gear sothe rack and spur gear engage at the same location when the steering cylinder is reinstalled.SpecificationsComponent SpecificationsSteering Rear wheel, hydraulic cylinder and rotary valve controlledPower Steering UnitMaximum System Pressure – 2030 psi [140 bar]Maximum Back Pressure – 150 psi [10.3 bar]Maximum Flow – 4 GPM [15.1 LPM]Displacement – 3.1 CIRCheck Valve for Manual Steering – YesRelief Valve Setting – 1500 psi [103.4 bar]
