lmnact Wrench --I- - 19 mm (3/4") MODEL 6906 INSTRUCTION MANUAL 'ION SPECIFICATIONS Capacities Bolt size 16 mm - 2 2 mm (518'' - 7/8") 1 Square drive (3/4") I 1 Impacts m%ite 1*600 I I No load (RPMI speed 1r700 I I Tightening torque 6,000 kg . cm (433 Ibs . ft.) 1 I Manufacturer reserves the right to change specifications without notice. Note: Specifications may differ from country to country.
IMPORTANT SAFETY INSTRUCTI0NS (For All Tools) WARNING: WHEN USING ELECTRIC TOOLS, BASIC SAFETY PRECAUTIONS SHOULD ALWAYS BE FOLLOWED TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, AND PERSONAL INJURY, INCLUDING THE FOLLOWING: READ ALL INSTRUCTIONS. 1. KEEP WORK AREA CLEAN. Cluttered areas and benches invite injuries. 2. CONSIDER WORK AREA ENVIRONMENT. Don't use power tools in damp or wet locations. Keep work area well lit. Don't expose power tools to rain.
14. REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of checking t o see that keys and adjusting wrenches are removed from tool before turning it on. 15. AVOID UNINTENTIONALSTARTING. Don't carry plugged-in tool with finger on switch. Be sure switch is OFF when plugging in. 16. OUTDOOR USE EXTENSION CORDS. When tool is used outdoors, use only extension cords intended for use outdoors and so marked. 17. STAY ALERT. Watch what you are doing, use common sense. Don't operate tool when you are tired. 18.
How to use 0 Switch operation The switch is reversible, providing either clockwise or counterclockwise rotation. Pulling the lower part of the trigger puts the wrench on in the clockwise direction. Pulling the upper part of the trigger puts the tool on in the counterclockwisedirection. Simply releasing either end of the trigger turns the tool off. Warning: It is dangerous and injurious to the tool to reverse the rotation by rapid switching without waiting for the motor to stop.
NOTES ON TIGHTENING OPERATIONS 0 Check your local voltage Using a power source with ten percent less than the nameplate voltage will cause a sharp drop in tightening torque. Check your voltage when using an extension cord. kg . cm second 0 Socket selection and installing capacity Use the right size socket for bolts and nuts. A different size socket will result in poor tightening torque.
FACTORS AFFECTING TIGHTENING TORQUE 1. Voltage A drop in voltage causes a reduction in motor speed, the force and number of impacts, and tightening torque. 2. Tightening time *The tightening time affects the number of impacts. Thus, the torque increases with time of tightening. * Long tightening eventually means no more increase in tightening torque, since the tool hammer’s tightening force and the foroe of the bolt or nut cancel each other out. 3.
Maintenance *Carbon brushes Replace carbon brushes when they wear down to about 6 m m (1/4") or sparking will occur. Both brushes should be changed a t the same time.
0PTIONAL ACCESSORI ES CAUTION : The accessories specified in this manual are recommended for use with your Makita Impact Wrench. The use of any other accessory might be hazardous. 0 Extension bar (Part No. 786202-6) Recommended for work i n tight places, where footing is poor or in spots where the conventional socket will not reach. 0 Universal joint (Part No. 7 8 5 2 0 8 - 4 ) This accessory is useful in a limited space where the machine cannot be held in line with the axis of the bolt or nut.
Feb.-O7-'91 us 19 m m (3/4") IMPACT WRENCH Model 6906 Note: The switch, noise suppressor and other part configurations may differ from country to country.
MODEL 6 9 0 6 'ikM 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 10 Feb.
MAKCTA LIMITEDONE YEAR WARRANTY Warranty Policy Every Makita tool is thoroughly inspected and tested before leaving the factory. It is warranted to be free of defects from workmanship and materials for the period of ONE YEAR from the date of original purchase. Should any trouble develop during this one-year period, return the COMPLETE tool, freight prepaid, to one of Makita’s Factory or Authorized Service Centers.
