October 2016 Service and Repair ManualBoom ComponentsPart No. 1269074 S-80 • S-85 • S-80X 4517 Visually inspect the cable break limit switcharm to be sure the wheel of the limit switch armis centered in the notch of the pivot plate.Note: If the boom extend cables are adjustedevenly, the wheel of the limit switch arm should becentered in the notch of the pivot plate.18 Install the boom end cover at the pivot end ofthe boom.19 Fully retract and lower the boom to the stowedposition.How to R eplac e the Boom Extend/R etr act CablesHow to Replace the BoomExtend/Retract CablesNote: The cable pulleys must also be replacedwhen replacing the cables.1 Remove the boom extension cylinder. Refer toRepair Procedure, How to Remove the BoomExtension Cylinder.Boom extend cables:2 Remove the cables from the lower boomextend cable bracket that attaches to thenumber 3 boom tube.3 Remove the rue rings and clevis pins from theboom extend cables located near the extendcable break limit switch.4 Remove the external snap rings from the boomextend cable pulley pivot pin. Use a soft metaldrift to remove the pin.Note: When driving the pivot pin out, be sure todrive it from the shaped end of the pin.5 Remove the pulley and boom extend cablesfrom the extension cylinder assembly. Discardthe old cables and pulleys.6 Route the new boom extend cables throughthe boom extend pulley bracket.7 Install the new boom extend cable pulley, pivotpin and snap rings.Note: Be sure the boom extend cables are routedthrough the grooves of the pulley and the upperwear pad on the extension cylinder.
