Makita DTW181RGJ Instruction Manual

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9 ENGLISHProper fastening torque for high tensile bolt0 1 2 32N•m(kgf•cm)120(200)40(410)60(610)80(820)100(1020)120(1220)140(1430)160(1630)M12M10M8M12M10M8180(1840)1. Fastening time (second) 2. Fastening torqueNOTE: Hold the tool pointed straight at the bolt or nut.NOTE: Excessive fastening torque may damage thebolt/nut or impact socket. Before starting your job,always perform a test operation to determine theproper fastening time for your bolt or nut.NOTE: If the tool is operated continuously until the bat-tery cartridge has discharged, allow the tool to rest for 15minutes before proceeding with a fresh battery cartridge.The fastening torque is affected by a wide variety offactors including the following. After fastening, alwayscheck the torque with a torque wrench.1. When the battery cartridge is discharged almostcompletely, voltage will drop and the fasteningtorque will be reduced.2. Impact socket• Failure to use the correct size impact socketwill cause a reduction in the fastening torque.• A worn impact socket (wear on the hex end or squareend) will cause a reduction in the fastening torque.3. Bolt• Even though the torque coefficient and the classof bolt are the same, the proper fastening torquewill differ according to the diameter of bolt.• Even though the diameters of bolts are thesame, the proper fastening torque will differaccording to the torque coefficient, the classof bolt and the bolt length.4. The use of the universal joint or the extension bar some-what reduces the fastening force of the impact wrench.Compensate by fastening for a longer period of time.5. The manner of holding the tool or the material ofdriving position to be fastened will affect the torque.6. Operating the tool at low speed will cause a reduc-tion in the fastening torque.MAINTENANCECAUTION: Always be sure that the tool isswitched off and the battery cartridge is removedbefore attempting to perform inspection ormaintenance.NOTICE: Never use gasoline, benzine, thinner,alcohol or the like. Discoloration, deformation orcracks may result.To maintain product SAFETY and RELIABILITY,repairs, any other maintenance or adjustment shouldbe performed by Makita Authorized or Factory ServiceCenters, always using Makita replacement parts.OPTIONALACCESSORIESCAUTION: These accessories or attachmentsare recommended for use with your Makita toolspecified in this manual. The use of any otheraccessories or attachments might present a risk ofinjury to persons. Only use accessory or attachmentfor its stated purpose.If you need any assistance for more details regard-ing these accessories, ask your local Makita ServiceCenter.• Impact socket• Extension bar• Universal joint• Socket bit adapter• Plastic carrying case• Makita genuine battery and chargerNOTE: Some items in the list may be included in thetool package as standard accessories. They maydiffer from country to country.