Part No. 77828 S-60 • S-65 • S-60 HC 3 - 49February 2012 Section 3 • Scheduled Maintenance ProceduresChecklist D ProceduresD-1Check the Boom Wear PadsNote: Genie specifications require that thisprocedure be performed every 1000 hours orannually, whichever comes first.Maintaining 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 in componentdamage and unsafe operating conditions.1 Start the engine from the ground controls.2 Raise the end of the primary boom to acomfortable working height (chest high), thenextend the boom 1 foot / 30 cm.3 Measure each wear pad. Replace the wear padonce it reaches the minimum allowablethickness. If the wear pad is still withinspecification, shim as necessary to obtainminimum clearance with zero binding.4 Extend and retract the primary boom through theentire range of motion to check for tight spotsthat may cause binding or scraping of the boom.Note: Always maintain squareness between theouter and innerboom tubes.Wear pad specifications MinimumTop and side wear pads 1 / 2 inch(platform end of boom) 12.7 mmBottom wear pads 5 / 8 inch(platform end of boom) 15.9 mmTop and side wear pads 1 / 2 inch(pivot end of boom) 12.7 mmBottom wear pads 5 / 8 inch(pivot end of boom) 15.9 mm
