Jet JAT-660 Operations & Parts Manual

Contents

10 JAT-660,661 ScrewdriversTroubleshooting JAT-660/661 ScrewdriverAny disassembly of the tool should be done by qualified service personnel. For problems not addressedbelow, contact JET technical service at 800-274-6846.Problem Possible cause RemedyTool will not start. Air valve closed or obstructed. Open valve; clear any obstructions.Dirt or gum deposits oncomponents.Flush tool with gum solvent.If problem persists, disassemble,clean and lubricate internal parts.Rotor vanes or other componentsare worn.Replace worn components.(Replace vanes as an entire set.)Trigger inoperable. Clean trigger mechanism to ensurefree movement. Replacemechanism if needed.Bearing(s) worn. Disassemble and inspect bearing.Grease or replace as needed.Excessive or abnormalvibration.Bearings worn. Disassemble and inspect bearing.Grease or replace as needed.Loss of power; erraticaction.Low air pressure. Verify compressor has proper CFMrating for tool.Check compressor regulatorsetting; set air pressure to 90 psi.Set regulator dial on tool tomaximum setting.Check for loose connections.Moisture or obstruction in airhose.Air supply must be clean and dry.Clean out air hose(s) and removeany kinks or bends.Improper size of air transmissionlines, hoses, fittings, orcouplings.Use appropriate-sized airlines/hoses.Verify proper fittings/couplings.Dirt or gum deposits oncomponents.Flush tool with gum solvent.Check and clean air filter oncompressor.Clean external areas of tool. Ifproblem persists, disassemble,clean and lubricate internal parts.Rotor vanes are worn. Replace vanes (entire set).Housing becomes hotduring operation.Insufficient lubrication. Lubricate with air tool oil.Worn components. Replace components as needed.Severe air leakage.(Note: Minimal escape ofair is often normal for airtools.)Air valve obstructed or damaged. Clean or replace.Housing loose or damaged. Tighten or replace as needed.