Makita DTD157RAJ Instruction Manual

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9 ENGLISHInstalling hookCAUTION: When installing the hook, alwayssecure it with the screw firmly. If not, the hookmay come off from the tool and result in the personalinjury.CAUTION: Use the hanging/mounting partsfor their intended purposes only. Using for unin-tended purpose may cause accident or personalinjury.► Fig.11: 1. Groove 2. Hook 3. ScrewThe hook is convenient for temporarily hanging the tool.This can be installed on either side of the tool. To installthe hook, insert it into a groove in the tool housing oneither side and then secure it with a screw. To remove,loosen the screw and then take it out.OPERATION► Fig.12The proper fastening torque may differ depending uponthe kind or size of the screw/bolt, the material of theworkpiece to be fastened, etc. The relation between fas-tening torque and fastening time is shown in the figures.Standard bolt21N•m(kgf•cm)160(1632)140(1428)120(1224)100(1020)80(816)60(612)40(408)20(204)0M14M14M12M12M10M10M8 M82.0 3.0 4.01.031. Fastening time (second) 2. Fastening torque3. Proper fastening torque corresponding to each boltdiameterHigh tensile bolt2 31N•m(kgf•cm)160(1632)140(1428)120(1224)100(1020)80(816)60(612)40(408)20(204)0M12M12M10M10M8M82.0 3.0 4.01.01. Fastening time (second) 2. Fastening torque3. Proper fastening torque corresponding to each boltdiameterHold the tool firmly and place the point of the driver bit in the screwhead. Apply forward pressure to the tool to the extent that the bitwill not slip off the screw and turn the tool on to start operation.NOTICE: If you use a spare battery to continuethe operation, rest the tool at least 15 min.NOTE: Use the proper bit for the head of the screw/bolt that you wish to use.NOTE: When fastening M8 or smaller screw, choosea proper impact force and carefully adjust pressure onthe switch trigger so that the screw is not damaged.NOTE: Hold the tool pointed straight at the screw.NOTE: If the impact force is too strong or you tighten thescrew for a time longer than shown in the figures, the screw orthe point of the driver bit may be overstressed, stripped, dam-aged, etc. Before starting your job, always perform a test oper-ation to determine the proper fastening time for your screw.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 almost completely,voltage will drop and the fastening torque will be reduced.2. Driver bit or socket bitFailure to use the correct size driver bit or socketbit 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.