7 - 18 Genie Z-45/22 Part No. 32960Service Manual - Second EditionSection 7 - Repair ProceduresPRIMARY BOOM COMPONENTS3-4Extension CylinderThe extension cylinder extends and retracts theprimary boom steel extension tube. It can only beremoved from the platform end of the primaryboom. The extension cylinder is equipped withcounterbalance valves to prevent movement in theevent of a hydraulic line loss.How to Remove theExtension CylinderThis procedure requires specificrepair skills, lifting equipment anda suitable workshop. Attemptingthis procedure without these skillsand tools may result in death orserious injury and significantcomponent damage. Dealerservice is strongly recommended.1 Raise the secondary boom and place a 4x4x31inch (78 cm) block between the chassiscounterweight and the upper mid-pivot.Carefully lower the secondary boom onto theblock.a upper mid-pivotb 4x4x31 inch blockc counterweightCrushing hazard. Keep handsaway from the block and allmoving parts when lowering thesecondary boom.baca extension boom end capb extension boomc extension cylinder rod-end weldmentfastenersd primary boom2 Raise the primary boom until the extensionboom end cap is 5 feet (1.5 m) off the ground.3 Extend the extension tube to the primary boomtube 17 inches (43 cm). Then secure toprevent any additional movement4 Remove the extension boom end cap.5 Remove the fasteners from the cylinder rod-end weldment.The bolts that secure the cylinderrod-end weldment are installedwith Loctite ® removable threadsealant. It may be necessary toheat the bolts and the surroundingarea to remove them. Do notreuse the bolts.6 If the function is operational, extend theextension cylinder until the rod-end weldmentclears the end of the extension tube.abcd800-610-4101ActionRental.com
