Service and Repair Manual June 2017Boom Components58 SX-180 Part No. 12684977 Protect the boom lift cylinder rod fromdamage.8 Use a soft metal drift to remove both pivotpins.9 Remove the secondary boom extensioncylinder from the machine while guiding thebarrel end of the cylinder out of the boom.Crushing hazard. Thesecondary boom extensioncylinder may becomeunbalanced and fall if it is notproperly supported when it isremoved from the machine.Component damage hazard.The boom lift cylinder rod canbecome damaged if the barrelend of the secondary boomextension cylinder is allowed tocome in contact with it.4-5Boom Extend and Retract CablesHow to Adjust the BoomExtend/Retract CablesProperly adjusted extend/retract cables areessential to safe machine operation. Failure tomaintain proper adjustment of the cables couldresult in unsafe operating conditions and maycause component damage. The boom extend andretract functions should operate smoothly and befree of hesitation, jerking and unusual noise.1 Start the engine from the ground controls.2 Raise and extend the boom approximately15 feet / 3.8 m.3 Fully retract the boom and lower to thehorizontal position.4 Stop the engine.5 Measure the distance between boom tubes#1 and #2, measuring from the pointsidentified as (11) and (12). (Illustration 1) Thisis dimension "A".Note: The distance should be approximately 1 in /2.6 cm. The actual measurement will be a functionof the primary extend/retract cylinder.
