Makita TW0350 Technical Information

Voltage (V) Cycle (Hz) Input Output Max. Output(W) 110 400 2,000 2,000 Yes (Rocker type) 350 (260) 400 400 400 400 230 230 230 230 230 350 350 350 350 350 120 220 230 240 3.8 3.5 1.9 1.8 1.8 12.7 (1/2) 2.5 (8.2) for other than Australia 2.0 (6.6) for Australia 2.9 (6.4) M12 - M22 M12 - M16 Models No. Description PRODUCT Current (A) TECHNICAL INFORMATION CONCEPTION AND MAIN APPLICATIONS Specification Standard equipment Optional accessories < Note > The standard equipment for the tool shown may differ from country to country. P 1 / 8 Dimensions : mm ( " ) Width ( W ) Height ( H ) Length ( L ) TW0350 Impact Wrench 50 / 60 50 / 60 50 / 60 50 / 60 50 / 60 283 (11-1/8) 233 (9-1/8) 87 (3-7/16) * Socket 24-45 .................................... 1 pc. * Plastic carrying case ....................... 1 pc. * Socket 19-38 * Socket 19-52 * Socket 19-78 * Socket 21-38 * Socket 21-52 * Socket 21-78 * Socket 21-150 * Socket 22-38 * Socket 22-52 * Socket 23-38 * Socket 23-52 * Socket 24-45 * Socket 24-52 * Socket 26-50 * Socket 26-78 * Socket 27-50 * Socket 27-78 * Socket 30-50 * Socket 30-78 * Socket 32-50 * Socket 32-78 Max. fastening torque : N.m (ft.lbs) Reverse switch Net weight: kg (lbs) No load speed (min-1=rpm) Impact per minute (min-1=bpm) Square drive : mm ( " ) Capacities Power supply cord : m ( ft ) High Tensile bolt Standard bolt L H W In order to occupy the advantageous position in the market, we have developed the above impact wrench with the following features. * Incredibly high torque of 350 N.m (260 ft.lbs) * Equipped with palm-fitting soft grip for comfortable work. * Extension bar * Universal joint * Elliptic socket * Time switch

< 1 > Lubrication Apply MAKITA grease N. No.1 to the following portions designated by black triangle to protect parts and product from unusual abrasion. Sleeve 18 8 8 10 13 10 13 19 19 7 Hammer case Anvil Hammer Spindle Spring holder Spur gear 19-41 * The surface which contacts sleeve 18. * The outer surface which contacts the inner surface of 8 Hammer * The inner surface where contacts 10 Spring holder. * The inner surface where contacts 13 Spindle. * The wing portion which is percussed by cam portion of 8 Hammer. * The cam portion which transmits the percussion to 7 Anvil. * The edge portion where 19 pcs.of steel ball 4 roll. * The groove where 2 pcs. of steel ball 6.4 roll. * The gear portion * The teeth portion * The surface where flat washer 8 contacts. * The joining hole in which 13 Spindle is inserted. 19 cps. of steel ball 4 Steel ball 6.4 Compression spring 28 Position No. Parts item Portion to be lubricated Amount : g ( oz ) 7 Flat washer 8 0.5 (0.02) 0.5 (0.02) 0.5 (0.02) 1.0 (0.04) 0.1 (0.01) 10 .0 (0.35) 10 .0 (0.35) 2.0 (0.08) 3.5 (0.13) 3.5 (0.13) 3.0 (0.12) 3.0 (0.12) Fig. 1 < 2 > Removing armature Fig. 2 Cup washer Motor housing Hammer case cover Urethane ring 5 Hex socket head bolt M5x50 Hammer case Armature Mechanical section ( 1 ) Remove brush holder cap and carbon brush. See Fig. 2. ( 2 ) Remove hex socket head bolt M5x50, cup washer and urethane ring 5 each 4 pcs. See Fig. 2. ( 3 ) Separate mechanical section (hammer case and hammer case cover) from motor housing. Then, armature can be separated from motor housing together with mechanical section. See Fig. 2. < Note > If the armature remains in the motor housing at the step (3), it can be removed by knocking the edge of motor housing with plastic hammer.

< 4 > Disassembling hammer unit Fig. 4 Fig. 5 Fig. 6 < 3 > Disassembling the mechanical section Fig. 3R Fig. 3F Hammer case Hammer case cover Hammer unit (hammer, spindle, compression spring 28, etc.) This part can remain in the hammer case. Anvil Flat washer 19 ( 1 ) Separate hammer case cover from hammer case by pulling in the vertical direction as illustrated in Fig. 3R in stead of Fig. 3F. ( 2 ) Remove anvil and flat washer 19 from hammer case. See Fig. 4. ( 3 ) Remove the hammer unit and spur gear 19-41 and 3 pcs. of flat washer 8 from hammer case cover. See Fig. 5. The parts can fall off the hammer case cover. The hammer unit (hammer, spindle, compression spring 28, etc.) Spur gear 19-41 Flat washer 8 Flat washer 8 < Note > Be careful, not to lose flat washers. Steel ball 6.4 Steel ball 6.4 ( 1 )Pull hammer toward gear side with "No.1R045 Gear extractor", and in order to take out steel ball 6.4 align the top of cam groove of spindle with the opening portion of hammer. See Fig. 6. Gear Top of cam groove Opening portion

< 5 > Assembling hammer unit Fig. 7R Fig. 7F Fig. 8 Fig. 9 Fig.10R Fig.10F ( 2 )After removing steel ball 6.4, loosen the handle of "No.1R045 Gear extractor" slowly until the spindle is free from the compression spring 28. ( 1 ) Put 19 pcs. of steel ball 4 in the groove of spindle's gear portion. See Fig. 8. ( 2 ) Put spring holder, compression spring 28 and hammer on the spindle. See Fig. 9. ( 3 ) Pressing the hammer to the gear side, align the top of cam groove of spindle with the opening of hammer. And mount 2 pcs. of steel ball 6.4 as illustrated in Fig. 10R. The assembling of hammer unit has been finished at this step. ( 3 )Putting the hammer unit as illustrated in Fig. 7R, remove the following parts. * Hammer * Compression spring 28 * Spring holder * 19 pcs. of steel ball 4 * Spindle Hammer Compression spring 28 19 pcs. of steel ball 4 The steel balls 4 fall off the spindle and can be lost. Spindle Spindle Spring holder Compression spring 28 Hammer Spring holder 19 pcs. of steel ball 4 Apply grease to the groove of spindles's gear portion for prevention against the falling off of steel ball. 19 pcs. of steel ball 4 Spindle Spring holder Compression spring 28 Hammer Steel ball 6.4 Steel ball 6.4 Do not hold the hammer unit as illustrated in Fig. 10F, when pressing hammer to the gear side. The steel ball 4 can fall off the groove of spindle's gear portion and scatter in the hammer.

Fig.11 Fig.12 Fig.13 The hammer unit (hammer, spindle, compression spring 28, etc.) Spur gear 19-41 Flat washer 8 Flat washer 8 ( 4 ) Mount the hammer unit and spur gear 19-41 to the hammer case cover. See Fig. 11. ( 5 ) Mount flat washer 19 and anvil to the hammer case. See Fig. 12. ( 6 ) Mount hammer case cover as illustrated in Fig. 13. The assembling of mechanical section has been finished at this step. < Note > Do not forget to mount flat washers 8 to the following portion. * Spindle of hammer unit * Shaft of hammer case cover for spur gear 19-41 (both side of spur gear 19-41) This part can remain in the hammer case. Anvil Flat washer 19 Hammer case Hammer case cover Hammer unit (hammer, spindle, compression spring 28, etc.) Hammer case cover

< 7 > Replacing electrical parts in the handle Fig.14 Fig.15 Fig.16 ( 1 ) Unscrew 2 pcs. of tapping screw 4x18 and remove handle cover. Then, the electrical parts (switch, line coil, resister, etc.) can be replaced. See Fig.14. ( 2 ) Put the sponge into the position as illustrated in Fig. 15. ( 3 ) Inflect the insulated terminals as illustrated in Fig. 16, when connecting with switch terminals. 37 34 38 40 42 39 49 48 Tapping screw 4x18 Tapping screw 4x18 Strain relief Handle cover. 37 Switch 34 Sponge 38 Line coil 40 Terminal block 42 Noise suppressor 39 Resister 49 Cord guard 48 Power supply cord If sponge is used, put it in the illustrated place. Handle cover Switch

Interference Suppression is required. For the other countries Circuit diagram P 7 / 8 Color index of lead wires Black White Red Orange Brush holder Left Brush holder Right Brush holder Left Brush holder Right Brush holder (Left) Brush holder (Right) Brush holder (Left) Brush holder (Right) Noise suppressor Terminal block Terminal block Power supply cord Power supply cord Resister Field Clear Purple Blue Brown Line coil 3 6 2 5 Switch Fastened on field core. For some country insulated terminal can be used in stead of terminal block. For some country insulated terminal can be used in stead of terminal block. 3 6 2 5 Switch Tube red or white

Do not cross the lead wires with which line coil and terminal block are connected. Line coil Terminal block The lead wires (red or white ) for connecting line coil with terminal block have to be put as shown. (between resister and noise suppressor. Noise suppressor Resister Insert the tube for protecting lead wires, deep in the motor housing. Fasten the lead wire (clear) of noise suppressor with screw. Lead holder Hold the following lead wires with this lead holder. * Lead wire (see through) of noise suppressor * Field lead wire (purple) to be connected to switch * Field lead wire (white) to be connected to switch * Field lead wire (black) to be connected to insulated terminal This lead wire has to be put in the bottom of lead holder. Lead holder Hold the following lead wires with lead holder. * Field lead wire (red) to be connected to switch * Field lead wire (orange) to be connected to switch * Field lead wire (black) to be connected to insulated terminal Line coil Terminal block Rib Put lead wires of power supply cord on the left side of rib. Right side Left side Put the insulated terminals under the lead wires of power supply cord.