3 - 48 S-40 • S-45 Part No. 102521October 2013Section 3 • Scheduled Maintenance ProceduresCHECKLIST D PROCEDURESa turntableb dial indicatorc drive chassisd turntable rotation bearing5 At the dial indicator, adjust it to "zero" theindicator.6 Fully extend the boom and lower to a horizontalposition.7 Note the reading on the dial indicator.Result: The measurement is less than0.063 inch / 1.6 mm. The bearing is good.Result: The measurement is more than0.063 inch / 1.6 mm. The bearing is worn andneeds to be replaced.8 Fully retract the boom and raise the boom to fullheight. Visually inspect the the dial indicator tobe sure the needle returns to the "zero"position.abcdD-7Inspect for Turntable BearingWearGenie specifications requires that this procedurebe performed every 1000 hours or annually,whichever comes first.Periodic inspection of turntable bearing wear isessential to safe machine operation, good machineperformance and service life. Continued use of aworn turntable bearing could create an unsafeoperating condition, resulting in death or seriousinjury and component damage.Note: Perform this procedure with the machine ona firm, level surface and the boom in the stowedposition.3 Start the machine from the ground controls andraise the boom to full height. Do not extend theboom.4 Place a dial indicator between the drive chassisand the turntable at a point that is directlyunder, or inline with, the boom and no morethan 1 inch / 2.5 cm from the bearing.Note: To obtain an accurate measurement, placethe dial indicator no more than 1 inch / 2.5 cm fromthe turntable rotation bearing.Property of American Airlines
