Makita TD021DSE TD021D Instruction Manual - Page 7

Fastening torque Proper fastening torque Standard bolt N m (ft lbs) 20 (15) 15 M8(5/16") (11) (M8) 10 (7) M6(1/4") (5/16") 5 (M6) (4) (1/4") 0 1.0 2.0 3.0 Fastening time (S) 2. Driver bit or socket bit Failure to use the correct size driver bit or socket bit will cause a reduction in the fastening torque. 3. Bolt • Even though the torque coefficient and the class of bolt are the same, the proper fastening torque will differ according to the diameter of bolt. • Even though the diameters of bolts are the same, the proper fastening torque will differ according to the torque coefficient, the class of bolt and the bolt length. 4. The manner of holding the tool or the material of driving position to be fastened will affect the torque. Using the tool as a hand screwdriver 007519 High tensile bolt N m (ft lbs) Fastening torque Proper fastening torque 20 (15) 15 M6(1/4") (11) (M6) 10 (7) (1/4") 5 (4) 0 1.0 2.0 3.0 Fastening time (S) 007520 NOTE: • Use the proper bit for the head of the screw/bolt that you wish to use. • Hold the tool pointed straight at the screw. • If you tighten the screw for a time longer than shown in the figures, the screw or the point of the driver bit may be overstressed, stripped, damaged, etc. Before starting your job, always perform a test operation to determine the proper fastening time for your screw. The fastening torque is affected by a wide variety of factors including the following. After fastening, always check 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. 010331 Switch off the tool. Move the lock lever to the locked position Turn the tool. NOTE: • Use the tool with a fastening torque less than 12.5 Nm (9ft•lbs). • This use is convenient for checking the screwdriving. • Do not use the tool for work requiring excessive force, such as tightening bolt M10 or bolts greater than M10 or removing rusted screws. MAINTENANCE CAUTION: • Always be sure that the tool is switched off and the battery cartridge is removed before attempting to perform inspection or maintenance. • Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may result. To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Makita Authorized or Factory Service Centers, always using Makita replacement parts. 7