Part No. 106488 Genie Z-45/25 Bi-Energy and Genie Z-45/25J Bi-Energy 3 - 31July 2004 Section 3 • Scheduled Maintenance ProceduresREV AD-1Check the Primary BoomWear PadsMaintaining the boom wear pads in good conditionis essential to safe machine operation. Wear padsare placed on boom tube surfaces to provide a lowfriction, replaceable wear pad between movingparts. Improperly shimmed wear pads or continueduse of worn out wear pads may result incomponent damage and unsafe operatingconditions.1 Raise the end of the primary boom to acomfortable working height (chest high), thenextend the boom 1 foot / 30 cm.2 Measure each wear pad. Replace the wear padif it is less than 9 /16 inch / 14.3 mm. If the wearpad is not less than 9 /16 inch / 14.3 mm, shimas necessary to obtain zero clearance withminimal drag.3 Extend and retract the primary boom throughthe entire range of motion to check for tightspots that may cause binding or scraping of theboom.Always maintain squarenessbetween the outer and innerboom tubes.Wear pad specificationsAll wear pads 9/ 16 inch14.3 mmD-2Check the Turntable RotationBearing BoltsMaintaining proper torque on the turntable bearingbolts is essential to safe machine operation.Improper bolt torque could result in an unsafeoperating condition and component damage.1 Raise the primary boom and place a safetychock on the lift cylinder rod. Carefully lowerthe boom onto the lift cylinder safety chock.Crushing hazard. Keep handsaway from cylinder and all movingparts when lowering the boom.A lift cylinder safety chock isavailable through Genie(part number 33484).2 Remove the engine pivot plate latch retainer.3 Open the engine pivot plate latch and swing theengine out and away from the machine toaccess the turntable bearing bolts.Checklist D Procedures
