Makita BTW120SA Owners Manual - Page 12

ASSEMBLY 1 2 CAUTION: • Always be sure that the tool is switched off and the battery cartridge is removed before carrying out any work on the tool. Selecting correct socket Always use the correct size socket for bolts and nuts. An incorrect size socket will result in inaccurate and inconsistent fastening torque and/or damage to the bolt or nut. 002334 Installing or removing socket To install the socket, push it onto the anvil of the tool until it locks into place. To remove the socket, simply pull it off. 1. Socket 2. Anvil OPERATION Standard bolt N.m (ft.lbs) 100 (72) 80 (58) 60 (43) 40 (29) 20 (14) Fastening torque 002363 M14 (9/16") M12 (1/2") M10 (3/8") M14 (9/16") M12 (1/2") M10 (3/8") Proper fastening torque 0 1.0 2.0 3.0 (S) Fastening time 002364 Proper fastening torque Fastening torque High tensile bolt N.m (ft.lbs) 120 (87) 100 (72) 80 (58) 60 (43) 40 (29) 20 (14) M12 (1/2") M12 (1/2") M10 (3/8") M8 (5/16") M10 (3/8") M8 (5/16") 0 1.0 2.0 3.0 4.0 5.0 (S) Fastening time The proper fastening torque may differ depending upon the kind or size of the bolt, the material of the workpiece to be fastened, etc. The relation between fastening torque and fastening time is shown in the figures. Hold the tool firmly and place the socket over the bolt or nut. Turn the tool on and fasten for the proper fastening time. NOTE: • When fastening screw M8 (5/16") or smaller, carefully adjust pressure on the switch trigger so that the screw is not damaged. • Hold the tool pointed straight at the bolt or nut. • Excessive fastening torque may damage the bolt/nut or socket. Before starting your job, always perform a test operation to determine the proper fastening time for your bolt or nut. Especially for the bolt smaller than M8 (5/ 16"), perform the above test operation to prevent the trouble on socket or bolt, etc. 12