Jet JAT-660 Operations & Parts Manual

Contents

8 JAT-660,661 ScrewdriversExcess air pressureand/or unclean air will shorten the tool’slife and may create a hazardous situation.4. Drain water from air compressor tank daily,as well as any condensation from air lines.Water in the air line may enter the tool andcause damage.5. Change filters on the air system on a regularbasis.6. Air-line pressure may be increasedaccordingly to compensate for extra-long airhoses (usually over 25 feet). Inside diameterof hose should be minimum 3/8-inch.General Air ToolInformationIf the air tool is not performing according tospecifications, the following are among the mostcommon causes. (See also “Troubleshooting”section.)• Contaminated air such as a dirty air systemor water in the system.• Using wrong size tool for the job.• Poor maintenance practices, such as usingexcessive air pressure or air volume.• Improper or no lubrication.Rule of ThumbIf it takes more than 8 seconds to tighten or loosena bolt or nut with an air impact wrench atmaximum setting, the air wrench is too small orthe air compressor CFM is not powerful enoughfor the job. Continued use in either capacity willcause damage to the tool.Tool PressureJET Air Tools operate on 70-to-100 psi (poundsper square inch) air pressure measured at the toolwhen the tool is operating. Set tool to 90 psiunless indicated otherwise. Pressure in excess of100 psi will shorten the life of the tool.Air System RecommendationsEquip the air compressor intake with areplaceable air filter that can be easily cleaned.Use safety shut-off valves so air flow can bestopped quickly in case of a line break.When using multiple hoses, air hoses should belarger than leader hose. Join multiple hosesdirectly, rather than with quick connect fittingswhich may cause pressure drops and tool powerreduction.Use anti-whip devices across hose couplings toprevent hose from whipping in the event of a hosefailure or coupling disconnect.Always use moisture traps at the compressor forthe main distribution line. Use moisture traps andin-line oilers on each downline that is to be usedfor air tools. (See Figure 2). Place oiler as close toair tool as possible for best lubrication.LubricationUse a light oil containing rust inhibitors, such asSAE #10. Many JET air tools have integral oilreservoirs, which should be kept filled when in-lineoilers are not used.If greasing is required, use a grease that is highlywater resistant for front case components on airimpact wrenches, grinders and sanders.RecyclingProtect the environment. Your tool containsmaterials which can be recovered or recycled.When its useful life has expired, please leave toolat a specialized facility.