Jet AB-1012W Operating Instructions And Parts Manual

Contents

Jet AB-1012W Operating Instructions And Parts Manual Manual pdf 10 page image

1010.0 AdjustmentsEfficient operation of the cut-off saw is dependentupon the condition of the saw blade and theadjustment of the blade guides. If the performanceof the saw begins to deteriorate, these itemsshould be inspected closely.If a new blade does not restore the machine’scutting accuracy and quality, refer to theTroubleshooting section (or the blademanufacturer’s guide) for conditions to considerand adjustments that can be made to increaseblade life.10.1 Blade GuidesDisconnect from power beforemaking blade guide adjustments.Refer to Figures 2 and 3.The blade is guided by two guide assemblies, eachwith two side ball bearings (A), two upper thrustbearings (B), and two tungsten carbide inserts (C).The side bearings ensure that the saw blade isperpendicular to the workpiece. The upperbearings prevent the blade edge from deflectingupward as the blade enters the workpiece. Thecarbide inserts provide lateral blade support.Use the adjusting screw (D) to bring the carbideguides into light contact with the blade; they shouldnot pinch the blade.Check the blade to make surethe welded section is the same thickness asthe rest of the blade. A thick weld may damageguide bearings.NOTE: If either of the carbide guides on a guideassembly becomes worn or damaged, replaceboth carbide guides as a set.The guide post (E) adjusts horizontally to controlthe spacing of the blade guides. There should be aminimal amount of blade exposed for safetyreasons, as well as to produce more accuratecutting with less blade flexion.1. Loosen the handle (F) and loosen theadjustment screw on the guide (D) and slidethe guide post into position. (An inch/mm scaleis included on the rail.)2. Re-tighten handle (F) and screw (D).3. The side bearings (A) have eccentricbushings; loosen the hex nut opposite thebearing and rotate the bearing until there isapproximately 0.001 inch clearance betweenblade and bearing.4. Re-tighten the hex nut to secure the setting.When the adjustment is correct, the guidebearing should still rotate freely with slightpressure of the finger (with the blade stopped).Figure 2Figure 3