Genie Z-30/20N Service Manual

Also see for Z-30/20N: Maintenance manual Maintenance manual Service manual Service and repair manual Service manual

Contents

Genie Z-30/20N Service Manual Manual pdf 36 page image

3 - 18 Z-30/20N • Z-30/20N RJ • Z-34/22 • Z-34/22N Part No. 139378Section 3 • Scheduled Maintenance Procedures June 2011REV BCHECKLIST B PROCEDURESB-13Test the Turntable Rotation StopNote: Genie specifications require that thisprocedure be performed every 250 hours orquarterly, whichever comes first.The turntable is capable of rotating the boom 359degrees and is stopped midpoint between the steerwheels by the rotation stop. Detecting a rotationstop malfunction is essential to safe operation andgood machine performance. If the turntable rotatespast the rotation stop, component damage mayresult.1 Turn the key switch to platform controls and pullout the red Emergency Stop buttons to the onposition at both ground and platform controls.2 Rotate the turntable to the left as far as itwill go.Result: Movement should stop when theprimary boom reaches midpoint between thesteer tires.3 Rotate the turntable to the right as far as itwill go.Result: Movement should stop when theprimary boom reaches midpoint between thesteer tires.B-14Check the Electrical ContactorsNote: Genie specifications require that thisprocedure be performed every 250 hours orquarterly, whichever comes first.Maintaining the electrical contactors in goodcondition is essential to safe machine operation.Failure to locate a worn or damaged contactorcould result in an unsafe working condition andcomponent damage.1 Remove the drive chassis cover from the non-steer end of the machine and locate theelectrical contactors mounted on the electricalcomponent mounting panel.2 Visually inspect the contact points of eachcontactor for the following items:• Excessive burns• Excessive arcs• Excessive pittingElectrocution/burn hazard. Contactwith hot or live circuits could resultin death or serious injury. Removeall rings, watches and otherjewelry.Note: Replace the contactors if any damage isfound.