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1. Table 1 Strength grade 4 8 6 8 8 8 12 9 Rated axial stress kgf mm 29 1 43 7 58 2 95 Material Mild steel Alloy steel including Ni Mn Cr etc Heat treatment None Processed hard material Diameter and effective sectional areas of threads Table 2 M5 x 0 8 M6 x 1 M8 x 1 25 mm M10 x 1 5 mm M12x 1 75 mm M14 x 2 M16 x 2 mm Kind of thread x pitch 3 16 1 4 5 16 3 18 15 32 9 16 5 8 Effective sectional area of thread mm 14 2 20 1 36 6 58 0 84 3 115 157 Thread diameter and appropriate tightening torque kaf em _ 3000 300 9 2604 ps 250 Strength grade 12 9 high 2170 in lbs high strength bolt gt 2000 200 5 1736 in lbs Strength grade 8 8 high strength bolt 1500 150 hig g o 1302 in lbs Strength grade 6 8 _ 1000 100 ordinary bolt s 868 in lbs Strength grade 4 8 2 500 50 ordinary bolt 434 in lbs 0 5 6 8 10 12 14 16 1 4 5 16 3 8 15 32 9 16 5 8 Fig 4 EAE Thread diameter 7 3 3 Bolt tightening torque characteristics Figures 5 1 and 5 2 show relationships between time and tightening torque for individual bolt types and sizes While the data are useful for handy reference actual tightening torque will vary depending on tightening conditions and other variables For details please refer to Para 8 3 Tightening Torque
2. Reassembly can be accomplished by following the disassembly procedures reverse However special attention should be given to the following items 1 Reassembly of the housing assembly a Be sure to follow the wiring diagram Fig 12 for proper wiring b When connecting the internal wires of the Brush Block 30 lt 27 gt to the DC Speed Control Switch 38 lt 35 gt fasten them with the Machine Screw W Sp Washer x 5 37 lt 34 gt paying attention to the direction of the flag terminal Fig 12 Brush Block 30 lt 27 gt Internal wire red Flag terminal Internal wire black Machine Screw W Sp Washer x 5 37 34 DC Speed Control Switch 38 lt 35 gt Fig 12 c Before mounting the parts to housing A apply silicone rubber ThreeBond 1211 to the area illustrated in Fig 13 Apply silicone rubber Housing A 32 d Mount a unit of Inner Cover 25 22 including the Armature and Pinion Set 26 lt 23 gt Magnet F Ass y 28 lt 25 gt including Dust Guard Fin B 29 lt 26 gt and Side Yoke A 27 lt 24 gt and Brush Block 30 lt 27 gt into housing A see Fig 16 Pay attention to the following items e Adjust the protrusions of Dust Guard Fin B 29 lt 26 gt to the concave portions of Magnet F Ass y 28 lt 25 gt and also adjust the outside diameter of Dust Guard Fin B 29 lt 26 gt to the outside
3. 3 501 996 177 985 329 NON MAGNETIC SOCKET 8MM 65L NON MAGNETIC HEX SOCKET 10MM 65L 996 178 NON MAGNETIC HEX SOCKET 12MM 65L 996 179 NON MAGNETIC HEX SOCKET 13MM 65L 996 180 NON MAGNETIC HEX SOCKET 14MM 65L 996 185 996 181 NON MAGNETIC HEX SOCKET 15MM 65L NON MAGNETIC HEX SOCKET 16MM 65L 996 182 NON MAGNETIC HEX SOCKET 17MM 65L 996 186 NON MAGNETIC HEX SOCKET 19MM 65L 996 197 HEX SOCKET LONG 21MMX166L 996 184 987 575 BIT PIECE CHUCK WRENCH FOR 10VLB D 10VLR D 930 119 CHUCK WRENCH 6 5G 307 543 CHUCK ADAPTER l l jl ALTERNATIVE PARTS CODE DESCRIPTION NO REMARKS WH 18DMR Printed in Japan 7 05 050708N Hitachi Power Tools LIST NO G830 ELECTRIC TOOL PARTS LIST CORDLESS IMPACT WRENCH 2005 7 8 Model 14DMR E1 CODE NO 324 238 DESCRIPTION FRONT CAP C WR 14DMR 324 239 PROTECTOR D 307 851 TAPPING SCREW W SP WASHER D4X30 BLACK 324 250 HAMMER CASE 324 257 324 256 PIN RETAINER B PLUNGER B 324 255 AN
4. 324 687 HITACHI PLATE 994 532 MACHINE SCREW W SP WASHER M3X5 324 227 324 225 DC SPEED CONTROL SWITCH PUSHING BUTTON B 321 918 HOOK ASS Y W LIGHT INCLUD 38 39 321 672 TAPPING SCREW D2X6 320 288 V LOCK NUT M5 306 952 CAUTION PLATE A FOR USA CAN 319 926 HOOK SPRING 320 881 SPECIAL SCREW A M5 322 880 BATTERY EB 1820L W ENGLISH N P 322 877 322 876 BATTERY EB 1830HL W ENGLISH N P BATTERY EB 1830HL W ENGLISH N P FOR AUS NZL 322 878 BATTERY EB 1826HL W ENGLISH N P 1 1 1 1 1 2 2 1 1 1 2 1 1 1 1 1 1 2 2 8 1 1 1 2 1 1 1 2 1 1 1 1 1 2 2 2 2 ALTERNATIVE PARTS STANDARD ACCESSORIES WR 18DMR CODE NO DESCRIPTION REMARKS CHARGER MODEL UC 24YFA CHARGER MODEL UC 18YG 323 230 CASE OPTIONAL ACCESSORIES CODE NO DESCRIPTION REMARKS CORNER ATTACHMENT ASS Y EW 14R INCLUD 602 618 955 300 HOUSING 955 301 METAL 955 302 SPINDLE HITACHI LABEL 955 303 BEARING RACE 955 304 NEEDLE THRUST BEARING 1413 955 305 COVER 955 306 NEEDLE BEARING NTN 1012 948 227 RETAINING RING FOR 047 HOLE 955 307 955 308 SLEEVE 955 309 WASHER 955 310 SOCKET COVER 955 311 SOCKET 303 247 _ SEAL LOCK HEX SOCKET HD BOLT 5 25 873 537 SOCKET PIN 873 187 O RING 15 1516 991 481
5. TIE SOCKET ASS Y 11 3MMX95L INCLUD 617 618 992 610 UNIVERSAL JOINT ASS Y INCLUD 617 618 955 153 UNIVERSAL JOINT PIN 991 476 ADAPTER ASS Y INCLUD 617 618 991 480 SOCKET ASS Y LONG 21MMX125L INCLUD 617 618 944 291 SOCKET ASS Y 10MMX40L INCLUD 617 618 873 632 SOCKET ASS Y 12MMX40L INCLUD 617 618 873 539 SOCKET ASS Y 13MMX40L INCLUD 617 618 873 540 SOCKET ASS Y 14MMX40L INCLUD 617 618 873 536 SOCKET ASS Y 17MMX32L INCLUD 617 618 873 624 SOCKET ASS Y 19MMX34L INCLUD 617 618 873 626 SOCKET ASS Y 21MMX36L INCLUD 617 618 873 627 SOCKET ASS Y 22MMX40L INCLUD 617 618 986 058 HEX SOCKET FOR PLASTIC CONE 12MMX70L INCLUD 617 618 873 633 EXTENSION BAR ASS Y SQUARE 12 7MMX100L INCLUD 617 618 955 151 SOCKET ASS Y LONG 21MMX75L INCLUD 617 618 955 138 HEX SOCKET ASS Y LONG 12MMX52L INCLUD 617 618 955 139 SOCKET ASS Y LONG 13MMX52L INCLUD 617 618 955 140 SOCKET ASS Y LONG 14MMX52L INCLUD 617 618 955 141 SOCKET ASS Y LONG 17MMX52L INCLUD 617 618 955 142 SOCKET ASS Y LONG 19MMX52L INCLUD 617 618 955 149 SOCKET ASS Y LONG 17MMX75L INCLUD 617 618 955 150 SOCKET ASS Y LONG 19MMX75L INCLUD 617 618 7 05 ALTERNATIVE PARTS 3 OPTIONAL ACCESSORIES CODE NO 955 143
6. 17 21 32 52 2 3 64 24 15 16 a4 1 11 32 25 1 5 17 955149 M 10 3 8 M 12 15 22 W 3 8 17 21 32 75 2 15 16 24 15 16 57 2 1 4 25 1 2 12 7 19 955142 M 12 15 32 M 14 9 16 W 7 16 19 23 32 52 2 3 64 24 15 16 34 1 11 32 28 1 3 32 1 2 19 mm 955150 12 15 32 M 14 9 16 W 7 16 19 23 22 75 2 15 16 24 15 16 57 2 1 4 28 1 3 32 21 955143 W 1 2 21 53 64 D 52 2 3 64 24 15 16 34 1 11 32 31 1 7 32 21 955151 W 1 2 21 53 64 D 75 2 15 16 24 15 16 57 2 1 4 81 1 7 32 21 mm 991480 W 1 2 21 53 64 D 125 4 47 51 24 15 16 107 4 7 32 31 1 7 32 22 mm 955144 M 12 15 32 M 14 9 16 M 16 5 8 22 78 52 2 3 64 24 15 16 34 1 11 32 32 5 1 9 32 24 955146 M 16 5 8 18 23 32 24 15 16 D 52 2 3 64 25 63 64 34 1 11 32 34 1 11 32 26 mm 955147 W 5 8 26 1 75 2 15 16 25 63 64 57 2 1 4 38 1 1 2 Bit adaptor Code 991476 pos mm 143 45 mm 1 25 32 Overall length A A Part name mm g n Code No Plus hd 45 1 25 32 955229 E 2 70 2 3 4 955654 i 1 2 kai 45 1 25 32 955230 70 2 3 4 955655 Extension bar Overall length 100 mm 3 15 16 Code
7. MODELS WH 14DMR WH 18DMR WR 14DMR WR 18DMR Hitachi Power Tools CORDLESS IMPACT DRIVER WH 14DMR WH 18DMR TECHNICAL DATA CORDLESS IMPACT WRENCH AND WR 14DMR WR 18DNR WH 14DMR WR 14DMR LIST Nos WH 14DMR G829 WH 18DMR G831 WR 14DMR G830 WR 18DMR G832 Jul 2005 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT REMARK Throughout this TECHNICAL DATA AND SERVICE MANUAL a symbol s is are used in the place of company name s and model name s of our competitor s The symbol s utilized here is are as follows WH 14DMR Competitor Symbol Utilized Company Name Model Name 1 DEWALT DWO054 WH 18DMR Competitor Symbol Utilized Company Name Model Name P2 DEWALT DWO56 WR 14DMR Competitor Symbol Utilized Company Name Model Name P3 DEWALT DW055 WR 18DMR Competitor Symbol Utilized Company Name Model Name P4 DEWALT DWO57 CONTENTS Page 1 PRODUCT NAME 1 2 MARKETING OBJECTIVE 127222 2222 s nasussasbiksdasisansansnatanunuanananansdaaabanunatunununaannunanuannnannunununununna aanananna 1 APPLICATIONS c SU kn 1 4 STANDARD EQUIPMENT v is eki at kk A 1 5 SELLING kek ak aa kako ok bk a kou pan aR 2 5 1
8. low ambient temperatures The tightening torque required may be reduced at low ambient temperatures or under the influence of grease and different torque coefficients dependent on manufacturing and finishing processes and specified by bolt manufacturers 3 Different bolt diameter Differences in bolt diameter will cause variation of the required levels of tightening torque Generally speaking tightening torque is higher for large bolts 4 Different materials being tightened When a bolt is tightened into a soft material such as aluminum plastic wood etc the tightening torque is considerably less than when the bolt is tightened into a hard material such as steel 5 Different tightening conditions The tightening torque may vary in accordance with bolt torque coefficient dependent on manufacturing process and specified by bolt manufacturers bolt grade and bolt length even though the dimensions of the bolts are the same Tightening torque may also vary depending on the surface finishing state of tightening materials steel aluminum etc and materials to be tightened In addition if there is seal packing clearance etc between tightening materials the tightening torque is decreased 6 Wear and looseness of the socket With extended use the hexagonal portion of the socket which is fitted to the head of the bolt or drill bit and or hexagonal portion of the driver chuck which is fitted onto the anvil in the main body w
9. DESCRIPTION HEX SOCKET ASS Y LONG 21MMX52L INCLUD 617 618 WR 18DMR 955 144 HEX SOCKET ASS Y LONG 22MMX52L INCLUD 617 618 992 613 SOCKET ASS Y FOR DUCT 13MMX95L INCLUD 617 618 645 992 614 SOCKET FOR DUCT 13MMX52L 992 615 992 616 SOCKET ASS Y FOR DUCT 14MMX95L SOCKET FOR DUCT 14MMX52L INCLUD 617 618 647 993 658 SOCKET ASS Y FOR DUCT 12MMX95L INCLUD 617 618 649 993 659 SOCKET FOR DUCT 12MMX52L 309 922 GREASE FOR IMPACT DRIVER 500G h h ALTERNATIVE PARTS Printedin Japan 7 05 050708N Hitachi Koki Ltd
10. Y 19MMX34L INCLUD 617 618 873 626 SOCKET ASS Y 21MMX36L INCLUD 617 618 873 627 HEX SOCKET ASS Y 22MMX40L INCLUD 617 618 986 058 HEX SOCKET FOR PLASTIC CONE 12MMX70L INCLUD 617 618 873 633 EXTENSION BAR ASS Y SQUARE 12 7MMX100L INCLUD 617 618 955 151 HEX SOCKET ASS Y LONG 21MMX75L INCLUD 617 618 955 138 HEX SOCKET ASS Y LONG 12MMX52L INCLUD 617 618 955 139 SOCKET ASS Y LONG 13MMX52L INCLUD 617 618 955 140 SOCKET ASS Y LONG 14MMX52L INCLUD 617 618 955 141 SOCKET ASS Y LONG 17MMX52L INCLUD 617 618 955 142 SOCKET ASS Y LONG 19MMX52L INCLUD 617 618 955 149 SOCKET ASS Y LONG 17MMX75L INCLUD 617 618 955 150 HEX SOCKET ASS Y LONG 19MMX75L INCLUD 617 618 7 05 ALTERNATIVE PARTS 3 OPTIONAL ACCESSORIES CODE NO 955 143 DESCRIPTION HEX SOCKET ASS Y LONG 21MMX52L REMARKS INCLUD 617 618 WR 14DMR 955 144 HEX SOCKET ASS Y LONG 22MMX52L INCLUD 617 618 992 613 SOCKET ASS Y FOR DUCT 13MMX95L INCLUD 617 618 645 992 614 SOCKET FOR DUCT 13MMX52L 992 615 992 616 SOCKET ASS Y FOR DUCT 14MMX95L SOCKET FOR DUCT 14MMX52L INCLUD 617 618 647 993 658 SOCKET ASS Y FOR DUCT 12MMX95L INCLUD 617 618 649 993 659 SOCKET FOR DUCT 12MMX52L 309 922 GREASE FOR IMPACT DRIVER
11. h h h ALTERNATIVE PARTS CODE DESCRIPTION NO REMARKS WH 14DMR Printed in Japan 7 05 050708N Hitachi Power Tools LIST NO G831 ELECTRIC TOOL PARTS LIST CORDLESS IMPACT DRIVER 2005 7 8 Model WH 18DMR E1 CODE 315 984 DESCRIPTION RETAINING RING REMARKS WH 18DMR 315 983 WASHER D 321 657 GUIDE SPRING A 322 717 GUIDE SLEEVE D 324 238 324 239 FRONT CAP C PROTECTOR D 307 851 TAPPING SCREW W SP WASHER D4X30 BLACK 324 216 HAMMER CASE 319 535 STEEL BALL D3 5 10 PCS 324 236 324 602 ANVIL ANVIL B FOR KOR 959 154 STEEL BALL D5 556 10 PCS 324 218 HAMMER 959 148 STEEL BALL 03 175 10 PCS N 315 978 324 224 WASHER J HAMMER SPRING F 316 172 WASHER S 324 222 STOPPER B 324 232 SPINDLE 321 667 324 234 IDLE GEAR SET 2 PCS NEEDLE ROLLER A 320 877 RING GEAR C 319 911 WASHER E 690 1VV BALL BEARING 6901VVCMPS2L 324 230 324 229 DAMPER A INNER COVER B 360 713 ARMATURE AND PINION SET 324 607 S
12. oc TERN M8 M 14 M8 M 14 M8 M 14 EN 5 High strength bolt 545 9 46 5 16 9 16 5 16 9 16 200 200 175 220 186 9 tightening 2040 2040 1780 2245 1900 kgf cm o torque 1770 in lbs 1770 in lbs 1545 in lbs 1950 in lbs 1650 in lbs 4 No load rotation speed o 2 600 0 2 300 0 2 400 0 2 600 0 2 400 Impact rate min 0 3 200 0 3 000 0 3 000 0 3 200 0 3 000 Main body weight kg 1 8 3 9 Ibs 1 8 3 9 lbs 1 9 4 2 Ibs 2 0 4 41bs 2 2 4 7 lbs i i 232 238 182 242 207 2 2366 kgf cm 2429 cm 1857 kgf cm 2469 2112 kgf cm 4 2054 in lbs 2108 in lbs 1580 in lbs 2100 in lbs 1797 in lbs No load rotation speed min 0 2 610 0 2 350 2 470 0 2 600 0 2 490 gt Impact rate 0 3 290 0 3 210 0 3 010 0 3 270 0 3 050 9 Overall length 167 236 184 x 236 168 x 232 167 x 236 168 x 234 5 x height 6 37 64 x 9 19 64 7 1 4 x 9 19 64 6 39 64 x 9 9 64 6 37 64 x 19 64 6 39 64 x 9 7 32 S Center height mm 27 1 1 16 27 1 1 16 28 5 1 1 8 27 1 1 16 28 5 1 1 8 Main body weight kg 1 88 4 1 Ibs 1 89 4 1 Ibs 1 87 4 1 Ibs 2 09 4 5 Ibs 2 18 4 7 Ibs No load sound pressure level dB A 72 70 76 72 76 12 7 mm 12 7 12 7 12 7 12 7 Tool t
13. 2 groove and claw of Hammer 12 lt 9 gt 8 mm dia hole of the Anvil 10 or Anvil A Ass y 7 sliding section between the Anvil 10 or Anvil Ass y lt 7 gt and the metal and upper surface of the claw Two Steel Balls 05 556 11 8 e Pinion tooth flanks of the Armature and Pinion Set 26 23 tooth flanks of Ring Gear C 21 18 tooth flanks of the Idle Gear Set 19 lt 16 gt Metal oil groove of the Hammer Case 8 4 b HITACHI MOTOR GREASE No 29 Models WH 14DMR WH 18DMR only Two Steel Balls D3 5 9 Sliding section between Anvil 10 and Guide Sleeve D 4 c MOLUB ALLOY 777 1 Cam groove and oil groove of Hammer 12 9 Cam groove and sliding section of Spindle 18 15 5 mm diameter hole of Idle Gear Set 19 16 All around the Needle Roller A 20 lt 17 gt Twenty eight Steel Balls D3 175 13 10 10 Screw tightening torque e Tapping Screw W Sp Washer D4 x 30 Black 7 3 2 45 0 49 25 5 kgf cm 21 3 4 3 in Ibs e Tapping Screw W Flange D4 x 20 Black 33 30 1 96 0 49 20 5 kgf cm 17 4 4 3 in Ibs e Machine Screw W Sp Washer x 5 87 34 e 0 29 to 0 39 3 to 4 kgf cm 2 6 to 3 5 in lbs Special Screw 5 46 43 1 96 0 49 20 5 kgf cm 17 4 4 3 in Ibs Brush 32 lt 29 gt orm eese sees 0 78 0 10 8 1 kgf cm 6 9 0 9 in Ibs 10 2 Pr
14. 5 8 Capacity Ordinary bolt M6 M14 1 4 9 16 High strength bolt M6 M12 1 4 15 32 High strength bolt M8 M14 5 16 9 16 Tightening torque 150 N m 1530 kgf cm 1330 in lbs 220 N m 2245 kgf cm 1950 in Ibs Tip condition 6 35 mm 1 4 Bit holder 12 7 mm 1 2 Square drive Type of motor Fan cooled rare earth magnet motor Enclosure Main body Polyamide resin elastomer Housing Aluminum alloy die casting Hammer case Protector Storage battery Polyamide resin black Charger ABS resin black Type of switch Trigger switch with forward reverse changeover pushing button with brake Handle configuration T type No load rotational speed 0 2 600 min Impact rate 0 3 200 min Main bod 2 0 kg 4 4 Ibs Incl ttery 4 Weight y 0 kg bs Includes battery Battery 1 04 kg 2 2 lbs Overall length x height 162 mm 6 3 8 x 236 mm 9 19 64 167 mm 6 37 64 x 236 mm 9 19 64 Center height 27 mm 1 1 16 Battery Type EB 1820L Sealed cylindrical nickel cadmium batteries Nominal voltage DC 18 V Nominal life Charging discharging approximately 300 cycles in the case of the Model UC 18YG Nominal capacity 2 0 Ah Battery Sealed cylindrical nickel metal hydride batteries Type EB 1826HL Nominal voltage DC 18 V EB 1830HL Nominal life Charging discharging approximately 500 cy
15. Insert a small flat blade screwdriver between Front Cap C 5 lt 1 gt and Protector D 6 lt 2 gt and remove them from the Hammer Case 8 lt 4 gt 3 Removal of the Hammer Case 8 lt 4 gt and the hammer assembly Remove the four Tapping Screws W Sp Washer D4 x 30 Black 7 lt 3 gt that connect the Hammer Case 8 lt 4 gt with Housing A B Set 35 lt 32 gt and remove the Hammer Case 8 lt 4 gt and the hammer assembly from Housing A B Set 35 lt 32 gt 4 Disassembly of the hammer assembly Push down Mount the hammer assembly onto the J 297 base for washer S Spindle 18 lt 15 gt With a hand press push down the top of the Spindle 18 lt 15 gt to Hammer Spring F 15 lt 12 gt Stopper B 17 lt 14 gt Washer S 16 lt 13 gt compress Hammer Spring F 15 J 297 base for washer S lt 12 gt In this position remove Stopper B 17 lt 14 gt with a small flat blade screwdriver then release the hand press See Fig 8 Fig 8 Remove the hammer assembly from the J 297 base for washer S and support the end surface of Spindle 18 lt 15 gt With a hand press push down either of the raised faces of the Hammer 12 lt 9 gt to compress Hammer Spring F 15 lt 12 gt In this position extract the two Steel Balls D5 556 11 lt 8 gt from the cam grooves of the Spindle 18 lt 15 gt and Hammer 12 lt 9 gt with a small flat blade scr
16. Q Nominal voltage V 14 4 14 4 14 4 18 18 Ambient temperature 0 40 0 40 0 40 UC 14YFA or UC 14YF2 or UC 24YFA or 5 UC 18YG UC 14YFA DW9107 UC 18YG DW9116 UC 14YFA 56 UC 14YF2 44 UC 24YFA 90 5 Power input capacity VA UC 18YG 70 UC 14YFA 56 18YG 70 Recharging voltage V 00 2 38 72 144 72 144 JCRNFAT2 ik 72 18 Plastic tool Plastic tool Plastic tool Plastic tool e Plastic tool Standard accessories case case case case case Charger Charger Charger Charger Charger UC 14YFA or UC 14 2 or DW9107 UC 24YFA or DW9116 UC 18YG UC 14YFA UC 18YG 1 In the case of tapping screws and wood screws a minimum of 1 8 is possible 2 Max tightening torque is based on tightening an M14 9 16 bolt strength grade 12 9 for seconds with a hexagon socket Main body weight does not include accessory tools and hook hexagon bit etc 3 7 2 Specification Comparisons Cordless Impact Wrench Type of switch changeover pushing button with brake changeover pushing button with brake changeover pushing button with brake changeover pushing button with brake Maker HITACHI HITACHI P3 P4 Item Model wR44DMR 140 WR 18DMR gt M 10 M 16 M 10 M 16 M 10 M 16 P 5 Ordinary bolt 3 8 _ 5 8 3 8 5 8 3 8 _ 5 8
17. Selling Points D scriBU0N8 oc a lai 4 6 UU Sua au ARRA SS 6 6 1 dak da 6 6 2 Optional ACC SSONOS erm 10 7 COMPARISONS WITH SIMILAR PRODUCTS 13 7 1 Specification Comparisons Cordless Impact Driver 13 7 2 Specification Comparisons Cordless Impact Wrench 14 recente Em 15 7 4 Tightening TIME 20 7 5 Number of Screws or Bolts dai 21 8 PRECAUTIONS IN SALES PROMOTION 1 11 1 1 1 22 8 l Safely ES 22 8 2 Tightening Torque Inspection Prior to Operation 25 8 3 Tightening Torque iii v uus gu SL 25 8 4 Suggestions and Precautions for the Efficient Use of the 26 9 OTHER PRECAUTIONS 111112 7772 cence cesesecteteeseccnsceceneeecnnsecteceesceetidecereccenuneeeecdeesiestdeaneen kapo En AD AA kk ance 27 10 REPAIR GUIDE 28 10 1 Precautions
18. 2HLFK specification Two 1826HL or 1830HL batteries NiMH capacity 2 6 Ah or 3 0 Ah UC 24YFA charger and case 5 SELLING POINTS 1 Cordless impact driver Models WH 14DMR WH 18DMR Class top tightening speed and tightening torque WH 14DMR 140 N m WH 18DMR 150 N m e Pi 130 N m P2 132 N m Common to the Model WH 120 2 High durability dust resistance and long service life Common to the Model WH 12DM2 Replaceable carbon brushes Common to the Model WH 12DM2 Protector is standard Common to the Model WH 120 2 Convenient light equipped hook Common to the Model WH 12DM2 4 Advanced case 2 Cordless impact wrench Models WR 14DMR WR 18DMR Class top tightening torque WR 14DMR 200 N m WR 18DMR 220 N m P3 175 N m P4 186 N m Common to the Model WH 12DM2 h High durability dust resistance and long service life Common to the Model WH 12DM2 Replaceable carbon brushes Common to the Model WH 12DM2 Protector is standard Common to the Model WH 12DM2 Convenient light equipped hook Common to the Model WH 120 2 H Advanced case 5 1 Selling Points Descriptions Refer to pages 4 through 10 of Technical Data and Service Manual for the Model WH 12DM2 for common selling
19. 983 WASHER D 321 657 GUIDE SPRING A 322 717 GUIDE SLEEVE D 324 238 FRONT CAP 324 239 PROTECTOR D 307 851 TAPPING SCREW W SP WASHER D4X30 BLACK 324 216 HAMMER CASE 319 535 STEEL BALL 03 5 10 PCS 324 236 ANVIL 324 602 ANVIL B 959 154 STEEL BALL 05 556 10 PCS 324 218 HAMMER 959 148 STEEL BALL 03 175 10 PCS 315 978 WASHER J 324 224 HAMMER SPRING 316 172 WASHER S 324 222 STOPPER 324 232 SPINDLE 321 667 IDLE GEAR SET 2 PCS 324 234 NEEDLE ROLLER 320 877 RING GEAR 319 911 WASHER E 690 1VV BALL BEARING 6901VVCMPS2L 324 230 DAMPER A 324 229 INNER COVER B 360 712 ARMATURE AND PINION SET 324 607 _ SIDE YOKE A 324 235 MAGNET ASS Y 324 228 DUST GUARD FIN 324 226 BRUSH BLOCK 999 054 CARBON BRUSH 5X6X11 5 1 PAIR 319 918 BRUSH 302 086 TAPPING SCREW W FLANGE D4X20 BLACK NAME PLATE 324 237 HOUSING A B SET 324 513 HITACHI PLATE 994 532 MACHINE SCREW W SP WASHER M3X5 324 227 DC SPEED CONTROL SWITCH 324 225 PUSHING BUTTON B 321 918 HOOK ASS Y W LIGHT 321 672 TAPPING SCREW D2X6 320 288 V LOCK NUT M5 306 952 STRAP BLACK CAUTION PLATE B 319 926 HOOK SPRING 320 881 SPECIAL SCREW A M5 322 883 BATTERY 1426H W ENGLISH 315 129 BATTERY 14B W ENGLISH 315 130 BATTERY 14B W ENGLISH 318 37
20. HITACHI rechargeable batteries Type EB 7 EB 9 EB 12 EB 14 EB 18 series and EB 24B Other types of batteries may burst causing personal injury and damage Charge between 32 and 104 F Indoor use only V Replace defective cord immediately P 24 8 2 Tightening Torque Inspection Prior to Operation As described and shown in Para 7 3 3 the output tightening torque of which the Models WH 14DMR WH 18DMR WR 14DMR and WR 18DMR are capable in excess of the rated tightening torque of certain bolts and screws Accordingly if the tightening time is prolonged for such bolts and screws it could cause damage to their threads or in the worst case cause them to be sheared off This phenomenon is common to all existing impact drivers Particularly when tightening M6 1 4 or smaller screws tightening time must be kept extremely short 0 5 seconds or less The customer should be advised to carry out several screw tightening operations and adjust the tightening time as necessary by measuring the tightening torque with an appropriate torque wrench or driver before commencing continuous operation 8 3 Tightening Torque Variation The tightening torque of the cordless impact driver or wrench may vary slightly in accordance with the factors described below Salespersons are requested to advise the customer to confirm that appropriate tightening torque is obtained by measuring the torque with an appropriate torque wrench or
21. Variation Note term tightening time indicates the impact time after the lower surface of the bolt has come in contact with the material into which it is being tightened n the tightening conditions shown in Figs 5 1 to 5 4 the screws are being tightened directly into a steel plate accordingly the torque goes up very abruptly in comparison with ordinary bolt tightening conditions Bolt Nut Steel plate thickness t Model WH 14DMR kgf cm in Ibs 1600 1389 1400 1215 1200 1042 1000 868 800 694 600 521 400 847 200 174 0 Tightening torque The following bolts were utilized Ordinary bolt strength grade 4 8 High strength bolt strength grade M10 x 30 _ 160 140 High strength bolt 120 100 F 80 F 60 Ordinary bolt 7 40 20 0 0 1 2 3 Tightening time sec Tightening torque Steel plate thickness tz 10 mm kgf cm in Ibs 1600 1389 1400 1215 1200 1042 1000 868 800 694 600 521 400 347 200 174 L140 L120 100 F 80 F 60 12 9 M12 x 45 High strength bolt Ordinary bolt 40 20 0 0 1 2 3 Tightening time sec Steel plate thickness t 25 mm 5 1 18 Strength grade is read as follows 4 8 Y
22. diameter of Magnet F Ass y 28 lt 25 gt when mounting Dust Guard Fin B 29 lt 26 gt to Magnet F Ass y 28 lt 25 gt See Fig 14 Mount Side Yoke A 27 lt 24 gt to Magnet F Ass y 28 lt 25 gt facing the flange of Side Yoke A 27 lt 24 gt to the outside see Fig 15 Insert two Dampers 24 lt 21 gt so that they fit into Inner Cover 25 lt 22 gt Fit the locking rib of Ring Gear C 21 lt 18 gt to the concave portion of Damper A 24 lt 21 gt Press fit the Armature and Pinion Set 26 lt 23 gt into Inner Cover B 25 lt 22 gt Adjust the convex portion of Dust Guard Fin B 29 26 to the concave portion of the Brush Block 30 27 see Fig 14 Adjust the concave portions for locking of Magnet F Ass y 28 25 to the protrusions of housing A see Figs 14 and 16 Magnet Dust Guard Fin Ass y 30 lt 27 gt B 29 lt 26 gt Concave Convex portions portions J Fig 14 Magnet F Ass y 28 lt 25 gt Side Yoke A 27 lt 24 gt Flange Fig 15 Align the protrusion of housing with the notch for locking of magnet F ass y Ley e Housing A 94 Mount the DC Speed Control Switch 38 lt 35 gt to housing so that the protrusion of the forward reverse lever at the top of the switch is inserted into the hole of Pushing Button B 39 lt 36 gt Apply s
23. in Disassembly and 28 10 2 Precautions in Disassembly and Reassembly of Battery Charger 37 11 STANDARD REPAIR TIME UNIT 38 For Models WH T4DMR IWA T8 DMR u a Sa Oa kja k l 38 For Models WR 14DMR WR 18DMR 39 Assembly Diagram for WH 14DMR Assembly Diagram for WH 18DMR Assembly Diagram for WR 14DMR Assembly Diagram for WR 18DMR 1 PRODUCT Hitachi Cordless Impact Driver Model WH 14DMR WH 18DMR Hitachi Cordless Impact Wrench Model WR 14DMR WR 18DMR 2 MARKETING OBJECTIVE The current Model WH 12DM2 developed under the concept for more compact powerful and convenient model has been highly evaluated However the market is becoming fiercely competitive due to a price war of the 9 6 V 12 V 14 4 V and 18 V impact driver wrench series To address the severe situation we have developed the new high performance impact driver wrench series Models WH 14DMR WH 18DMR WR 14DMR and WR 18DMR under the same concept as the current Model WH 12DM2 These new models can take on the low price competitors 3 APPLICATIONS Tightening loosening of small screws tapping screws wood screws bolts nuts etc Drilling into wood and various other materials with use of optional accessory dr
24. torque driver at the beginning of the tightening operations and as necessary during the tightening operations In addition the torque values shown in Para 7 3 2 above are useful as a handy reference and may be utilized as tentative standards 1 Voltage of battery Tightening torque is affected by the voltage output of the battery For example the relationship between tightening torque and the number of M16 x 55 mm 5 8 x 2 5 32 F10T bolts tightened is shown in Fig 6 below As can be seen in the graph tightening torque decreases as the number of bolts tightened increases This phenomenon is caused by the decline in voltage output of the battery due to the increasing number of bolts tightened In particular the tightening torque decreases rapidly just before the battery is fully discharged range a in the graph As this phenomenon is an inherent drawback in any cordless impact driver salespersons are requested to ensure that the customer is fully aware of and understands this characteristic Model WR 14DMR uam N m M16 x 55 5 8 X2 5 32 F10T tightening time 3 sec 3000 300 2504 5 16 2500 250 2000 200 FW 12 EMS AN f 100 150 2 a Pm T L TEN F 5 1000 100 5 w 1 500 50 434 When completely YA 2 0 0 0 0 20 40 60 80 100 120 140 Number of bolts driven per charge 1430H battery Fig 6 95 2 Effects
25. 0 2 610 0 2 650 0 2 470 0 2 600 0 2 490 Impact rate min 0 3 190 0 3 210 0 2 800 0 3 170 0 2 840 Overall length mm 162 236 179 x 236 167 x 232 162 x 236 167 x 234 xheight 6 3 8 x 9 19 64 7 3 64 x 9 19 64 6 37 64 x 9 9 64 6 3 8 x 9 19 64 6 37 64 x 9 7 32 9 Center height 27 1 1 16 27 1 1 16 28 5 1 1 8 27 1 1 16 28 5 1 1 8 Main body weight kg 1 87 4 1 lbs 1 89 4 1 Ibs 1 85 4 1 Ibs 2 09 4 5 Ibs 2 19 4 7 Ibs No load sound pressure leve 72 71 76 72 76 Tool tip mounting system Driver chuck Driver chuck Driver chuck Driver chuck Driver chuck Type of switch Variable speed Variable speed Variable speed Variable speed Variable speed Switch with switch with Switch with switch with Switch with forward reverse forward reverse forward reverse forward reverse forward reverse changeover lever changeover lever changeover lever changeover lever changeover lever Type of motor DC magnet DC magnet DC magnet DC magnet DC magnet Voltage V 14 4 14 4 14 4 18 18 32 30 28 26 24 14 1426 18201 1830HL EB1430H poe E DW9091 or EB1826HL DW9096 gt EB 14B 2 0 EB 1820L 2 0 5 Nominal capacity Ah EB1426H 2 6 EB 14B 0 1 7 1826 2 6 2 4 1430H 3 0 1430H 3 0 EB 1830HL 3 0
26. 0 I 500 50 434 Ordinary bolt 434 0 0 0 0 1 2 3 0 1 2 3 Tightening time sec Tightening time sec Steel plate thickness Steel plate thickness t 10 mm 25 Fig 5 3 Model WR 18DMR kgf cm kgf cm in Ibs M10 x 30 in los M12 x 45 2000 200 2000 200 1736 High strength bolt 1736 AT S 1500 150 1500 150 2 1302 S 1302 1000 100 1000 100 2 868 1 5 868 Ordinary bolt 500 50 500 50 434 Ordinary a 434 High strength bolt 0 0 0 0 1 2 3 9 0 1 2 3 Tightening time sec Steel plate thickness t 10 mm Tightening torque Tightening time sec Steel plate thickness t 25 mm Fig 5 4 19 tes M14 x 50 18007 180 1562 1600 160 1389 A 1218 High strength bolt 1200 120 1042 1000 L 100 Ordinary bolt E 868 800 694 600 60 521 400 40 347 200 F 20 174 0 0 0 1 2 3 Tightening time sec Steel plate thickness t 25 mm kgf in los Nm M14 x 45 2500 250 21 70 High strength bolt 2000 F 200 1736 1500 150 1302 AT 1000 100 868 Ordinary bolt 500 50 434 9 0 0 1 2 3 Tightening time sec Steel plate thickness t 25 mm kgf cm in bs M14 x 50 2500 250 2170 2000 200 1736 5 1500 H 150 High strength bolt 1302 1000 100 868 Ordinary bolt 500 50 434 0 0 0 1 2
27. 137 3 1200 1042 in lbs 120 bolt in seconds with a hexagon socket 5 868 in ibs 100 40 mm long E 800 694 in lbs go Z 600 521inbs 60 WH 14DMR 10 96 higher than P1 F 400 347in Ibs 40 200 174 in lbs 20 WH 18DMR 15 higher than P2 WH 14DMR WH 14DM 1 WH 18DMR 2 Fig 2 Tightening torque comparison Selling points of the Models WR 14DMR WR 18DMR Powerful tightening torque WR 14DMR 200 N m 2040 kgf cm 1770 in lbs e WR 18DMR 220 N m 2245 1950 in lbs Both the Models WR 14DMR and WR 18DMR are equipped with a relatively inexpensive magnet and the entire length is significantly shorter than the previous models respectively However the performance is superior to the competitors thanks to the large hammer and the optimized impact timing Comparison of measured data with the previous model and the competitors is shown below 1 Tightening torque comparison Figure 3 shows the torque required for tightening an M16 F10T bolt in 3 seconds with a hexagon socket 40 mm long WR 14DMR 25 higher than e WR 18DMR 20 higher than P4 kgf em 2500 250 2710 in lbs F 238 2000 200 1736 in lbs 5 5 1500 150 1302 in lbs 1000 100 868 in lbs _ 500 50 434 in lbs 0 0 WR14DMR WR 14DM P3 WR 18DMR 14 4 V 14 4 V 14 4 V 18 V 18 V Fig 3 The data above are intended for refe
28. 2 BATTERY EB 1430H W ENGLISH 2 ALTERNATIVE PARTS 7 05 FOR KOR N INCLUD 27 INCLUD 41 42 FOR USA 1 1 1 1 1 2 2 1 1 1 2 1 1 1 1 1 1 2 2 8 1 1 1 2 1 1 1 2 1 1 1 1 1 2 2 2 FOR NZL AUS KOR STANDARD ACCESSORIES CODE NO DESCRIPTION CHARGER MODEL UC 14YFA REMARKS WH 14DMR CHARGER MODEL UC 18YG 323 230 CASE OPTIONAL ACCESSORIES CODE NO 321 823 DESCRIPTION DRILL CHUCK AND ADAPTER SET INCLUD 616 618 309 922 GREASE FOR IMPACT DRIVER 5000 992 671 DRIVER BIT B NO 2 50L 992 672 DRIVER BIT B NO 3 50L 996 177 985 329 NON MAGNETIC HEX SOCKET 8MM 65L NON MAGNETIC HEX SOCKET 10MM 65L 996 178 NON MAGNETIC HEX SOCKET 12MM 65L 996 179 NON MAGNETIC HEX SOCKET 13MM 65L 996 180 NON MAGNETIC HEX SOCKET 14MM 65L 996 185 996 181 NON MAGNETIC HEX SOCKET 15MM 65L NON MAGNETIC HEX SOCKET 16MM 65L 996 182 NON MAGNETIC HEX SOCKET 17MM 65L 996 186 NON MAGNETIC HEX SOCKET 19MM 65L 996 197 HEX SOCKET LONG 21MMX166L 996 184 987 575 BIT PIECE CHUCK WRENCH FOR 10VLB D 10VLR D 930 119 CHUCK WRENCH 6 5G 307 543 CHUCK ADAPTER h b
29. 3 kgf cm Tightening time sec Steel plate thickness t 25 mm 7 4 Tightening Time The performance of the Models WH 14DMR WH 18DMR WR 14DMR and WR 18DMR is superior to the competitors thanks to the large hammer and the optimized impact timing Tightening time comparison is shown below The data below are intended for reference purposes only because actual tightening time will vary depending on hardness of the workpiece ambient temperature characteristics of the battery etc 1 Wood screw 5 3 mm dia x 120 mm length lauan Fast Slow Voltage Model 2 4 6 8 10 sec 14 4 14 6 5 144 WH 14DM 6 1 sec 144 P1 NN 18 HITACHI WH 18DMR ws 5 7 sec 18 P2 6 1 sec 2 Wood screw 4 5 mm dia x 90 mm length hemlock spruce Fast Slow oltage M 9 ode 1 2 3 4 5 sec 144 HITACHI WH 14DMR 2 4 sec 1444 HITACHI WH 14DM 2 3 sec 14 4 1 2 4 sec 18 HITACHI WH 180DMR ws 2 0 sec 3 Wood screw 4 2 mm dia x 75 mm length hemlock spruce Fast Slow Voltage Model 1 2 3 4 5 sec 144 HITACHI WH 14DMR 1 5 sec 144 HITACHI WH14DM 1 5 14 4 1 125 sec 18 HITACHI 18DMR ESGES
30. 500G ALTERNATIVE PARTS Printed in Japan 7 05 050708N Hitachi Power Tools LIST NO G832 ELECTRIC TOOL PARTS LIST CORDLESS IMPACT WRENCH 2005 7 8 Model WR 18DMR E1 324 238 DESCRIPTION FRONT CAP C REMARKS WR 18DMR 324 239 PROTECTOR D 307 851 TAPPING SCREW W SP WASHER D4X30 BLACK 324 250 HAMMER CASE 324 257 324 256 PIN RETAINER B PLUNGER B 324 255 ANVIL ASS Y INCLUD 5 6 959 154 STEEL BALL D5 556 10 PCS 324 218 HAMMER N fae d PS 959 148 315 978 STEEL BALL D3 175 10 PCS WASHER J 324 224 HAMMER SPRING F 316 172 WASHER S 324 222 STOPPER B 324 232 321 667 SPINDLE IDLE GEAR SET 2 PCS 324 234 NEEDLE ROLLER A 320 877 RING GEAR C 319 911 WASHER E 690 1VV 324 230 BALL BEARING 6901VVCMPS2L DAMPER A 324 229 INNER COVER B 360 713 ARMATURE AND PINION SET 324 607 SIDE YOKE A 324 235 324 228 MAGNET F ASS Y DUST GUARD FIN B INCLUD 24 324 226 BRUSH BLOCK 999 054 CARBON BRUSH 5X6X11 5 1 PAIR 319 918 BRUSH CAP 302 086 TAPPING SCREW W FLANGE D4X20 BLACK NAME PLATE 324 240 HOUSING A B SET
31. 7 21 32 C 32 1 1 4 8 5 16 28 1 3 32 1 2 5 19 mm 873624 M 12 15 32 14 9 16 W 7 16 19 23 32 34 1 11 32 9 11 32 28 1 3 32 mm 873626 m W 1 2 21 53 64 D 36 1 13 32 10 3 8 32 1 1 4 22 mm 873627 M 12 15 32 M 14 9 16 M 16 5 8 22 7 8 D 40 1 9 16 14 9 16 35 1 3 8 24 873629 M 16 5 8 M 18 23 32 24 15 16 D 40 1 9 16 15 9 16 38 1 1 2 26 mm 873630 W 5 8 26 1 D 40 1 9 16 15 9 16 38 1 1 2 27 mm 985195 M 16 5 8 18 23 32 M 20 27 1 1 16 D 40 1 9 16 16 5 8 42 1 21 32 Each dimension and applicable bolt for each long socket Shape B Shape D it Di dia 277 ZX oi A NJ proh Part Code I 4 8 Socket primary dimensions mm High ISO ISO we H mim q strength Ordinary Small type Li Le D 12 mm 955138 M8 5 6 W 5 16 12 15 32 52 2 3 64 20 25 32 34 1 11 32 20 25 32 13 955139 M8 5 16 13 1 2 52 23 64 20 25 32 34 1 11 32 21 5 53 64 14 mm 955140 E M10 38 1416 52 2 3 64 20 25 32 34 1 11 32 22 718 17 mm 955141 M 10 3 8 12 15 32 W
32. Charger e Charger e Charger e Charger UC 14YFAor UC 14YF20r DW9107 UC 24YFA or DW9116 UC 18YG UC 14YFA UC 18YG 1 Max tightening torque is based on tightening an M 16 5 8 bolt F10T for 3 seconds with a hexagon socket 3 Main body weight does not include accessory tools and hook hexagon bit etc 7 3 Tightening Torque 7 3 1 Tightening torque characteristic comparisons 1 Impact driver 14 4 V kgf cm 1800 1562 in Ibs 1600 1389 in lbs 1400 1215 in Ibs 140 1200 1042 in Ibs 1000 868 in lbs 800 694 in lbs 600 521 in Ibs 400 847 in lbs 200 174 in lbs 2 Impact driver 18 V kgf cm 1800 1562 in Ibs 1600 1389 in Ibs 1400 1215 in Ibs 1200 1042 in Ibs 1000 868 in lbs 800 694 in lbs 600 521 in Ibs 400 347 in lbs 200 174 in lbs 0 0 N m 180 160 140 120 100 80 60 40 20 WH 14DM WH 14DMR 0 1 2 3 sec WH 18DMR 5 Test conditions Bolt M14 x 50 mm high strength bolt Steel plate SS34P Thickness 25 mm Accessory tool Hexagon socket length 40 mm width across flat 19 mm Test conditions Bolt M14 x 50 mm high strength bolt Steel plate SS34P Thickness 25 mm Accessory tool Hexagon socket length 40 mm width across flat 19 mm 3 Impact wrench 14 4 V kgf cm 2500 2170 in lbs 2000 1736 in lbs 1500 1302 in lbs 1000 868
33. EIZKQUM MUJIIBIIIIIGGHII 1 4 sec 18 2 1 4 20 7 5 Number of Screws or Bolts Driven 7 5 1 Per charge working capacity comparisons Test data on the number of screws or bolts which can be driven per battery charge by the new models vs the previous models are shown in the table below Please note that the data below are intended for general reference only as the number of screws which can be tightened per charge will vary slightly depending on screw tightening conditions screw sizes ambient temperatures and the charging capacity of the battery Number of screws or bolts driven Cordless impact driver Model HITACHI HITACHI B HITACHI T Tightening condition WH 14DMR WH 14DM WH 18DMR EB 14B EB 14B DW9091 Nominal capacity DW9096 Battery Nominal capacity Nominal capacity Nominal capacity 2 6 Ah Nominal capacity 2 0 Ah 2 0 Ah 1 7 Ah 2 4 Ah Wood screw 4 0 mm dia x 50 mm 640 640 680 1165 1200 soft wood Wood screw 4 2 mm dia x 90 mm 150 150 140 275 275 hard wood Wood screw 5 3 mm dia x 120 mm 55 55 40 95 90 hard wood Machine screw 1 270 1 270 1 350 2 300 2 375 M8 x 16 mm Op 8 PRECAUTIONS SALES PROMOTION 8 1 Safety Instructions In the interest of promoting the safest and most efficient use of these tools by all our customers it is very important that at the time of sale the salesperson carefully ensures that the buyer seriously
34. ENGLISH N P FOR NZL 318 372 BATTERY EB 1430 W ENGLISH 1 1 1 1 1 2 2 1 1 1 2 1 1 1 1 1 1 2 2 8 1 1 1 2 1 1 1 2 1 1 1 1 1 2 2 2 2 ALTERNATIVE PARTS STANDARD ACCESSORIES WR 14DMR CODE NO DESCRIPTION REMARKS CHARGER UC 14YFA CHARGER UC 18YG 323 230 CASE OPTIONAL ACCESSORIES CODE NO DESCRIPTION REMARKS CORNER ATTACHMENT ASS Y EW 14R INCLUD 602 618 955 300 HOUSING 955 301 METAL 955 302 SPINDLE HITACHI LABEL 955 303 BEARING RACE 955 304 NEEDLE THRUST BEARING 1413 955 305 COVER 955 306 NEEDLE BEARING 1012 948 227 RETAINING RING 047 HOLE 955 307 PINION 955 308 SLEEVE 955 309 WASHER 955 310 SOCKET COVER 955 311 SOCKET 303 247 SEAL LOCK HEX SOCKET HD BOLT M5X25 873 537 SOCKET PIN 873 187 O RING J1SW1516 991 481 FORM TIE SOCKET ASS Y 11 3MMX95L INCLUD 617 618 992 610 UNIVERSAL JOINT ASS Y INCLUD 617 618 955 153 UNIVERSAL JOINT 991 476 ADAPTER ASS Y INCLUD 617 618 991 480 HEX SOCKET ASS Y LONG 21MMX125L INCLUD 617 618 944 291 HEX SOCKET ASS Y 10MMX40L INCLUD 617 618 873 632 HEX SOCKET ASS Y 12MMX40L INCLUD 617 618 873 539 SOCKET ASS Y 13MMX40L INCLUD 617 618 873 540 SOCKET ASS Y 14MMX40L INCLUD 617 618 873 536 SOCKET ASS Y 17MMX32L INCLUD 617 618 873 624 SOCKET ASS
35. IDE YOKE A 324 235 MAGNET F ASS Y INCLUD 27 324 228 324 226 DUST GUARD FIN B BRUSH BLOCK 999 054 CARBON BRUSH 5X6X11 5 1 PAIR 319 918 BRUSH CAP 302 086 TAPPING SCREW W FLANGE D4X20 BLACK 324 240 NAME PLATE HOUSING A B SET 324 514 HITACHI PLATE 994 532 MACHINE SCREW W SP WASHER M3X5 324 227 DC SPEED CONTROL SWITCH 324 225 321 918 PUSHING BUTTON B HOOK ASS Y W LIGHT INCLUD 41 42 321 672 TAPPING SCREW D2X6 320 288 V LOCK NUT M5 306 952 STRAP BLACK 319 926 CAUTION PLATE B HOOK SPRING FOR USA CAN 320 881 SPECIAL SCREW A M5 322 878 BATTERY EB 1826HL W ENGLISH N P 323 564 BATTERY EB 1830HL W ENGLISH N P 322 876 322 880 BATTERY EB 1830HL W ENGLISH N P BATTERY EB 1820L W ENGLISH N P 1 1 1 1 1 2 2 1 1 1 2 1 1 1 1 1 1 2 2 8 1 1 1 2 1 1 1 2 1 1 1 1 1 2 2 2 FOR NZL AUS ALTERNATIVE PARTS STANDARD ACCESSORIES CODE NO DESCRIPTION CHARGER MODEL UC 24YFA REMARKS WH 18DMR CHARGER MODEL UC 18YG 323 230 CASE OPTIONAL ACCESSORIES CODE NO 321 823 DESCRIPTION DRILL CHUCK AND ADAPTER SET REMARKS INCLUD 616 618 309 922 GREASE FOR IMPACT DRIVER 500G 992 671 DRIVER BIT 2 501 992 672 DRIVER
36. No 873633 Dihedral width of Universal joint Code No 992610 applicable bolts Code No Socket ass y for duct 12 15 32 993658 13 1 2 992613 14 9 16 992615 EW 14R corner attachment Code No 9329 9001 7 COMPARISONS WITH SIMILAR PRODUCTS 7 1 Specification Comparisons Cordless Impact Driver HITACHI HITACHI 1 2 WH 14DMR WH 14DM WH 18DMR M4 M10 4 10 M4 M10 gt Small screw 5 32 3 8 5 32 3 8 5 32 3 8 o8 6 14 6 14 6 14 5 9 Ordinary pel 1 4 9 16 1 4 9 16 1 4 9 16 o 6 12 6 12 6 12 High strength bolt i 15 32 1 4 15 32 1 4 15 32 2 140 145 130 150 132 o tightening N mi 1430 kgfem 1480 1330 1530 1350 9 torque 1240 in lbs 1280 in lbs 1150 in lbs 1330 in lbs 1170 in lbs 65 No load rotation speed g 2 600 0 2 600 0 2 400 0 2 600 0 2 400 Impact rate min 0 3 200 0 3 200 0 3 000 0 3 200 0 3 000 Main body weight kg 1 8 3 9 lbs 1 8 3 9 Ibs 1 9 4 1 lbs 2 0 4 4lbs 2 2 47 Ibs torque 2 N m 1531 kgf cm 1582 kgf cm 1408 cm 1653 kgf cm 1429 cm 4 1329 in lbs 1373 in lbs 1222 in lbs 1435 in lbs 1240 in lbs No load rotation speed min
37. VIL A ASS Y INCLUD 5 6 959 154 STEEL BALL D5 556 10 PCS NIOJ 324 218 N h mb mb SEE k e 959 148 315 978 STEEL BALL D3 175 10 PCS WASHER J N 324 224 HAMMER SPRING F 316 172 WASHER S 324 222 STOPPER B 324 232 321 667 SPINDLE IDLE GEAR SET 2 PCS 324 234 NEEDLE ROLLER A 320 877 RING GEAR C 319 911 WASHER E 690 1VV 324 230 BALL BEARING 6901VVCMPS2L DAMPER A 324 229 INNER COVER B 360 712 ARMATURE AND PINION SET 324 607 SIDE YOKE A 324 235 324 228 MAGNET F ASS Y DUST GUARD FIN B INCLUD 24 324 226 BRUSH BLOCK 999 054 CARBON BRUSH 5 6 11 5 1 PAIR 319 918 BRUSH CAP 302 086 324 686 TAPPING SCREW W FLANGE D4X20 BLACK HITACHI PLATE 324 237 HOUSING A B SET 324 686 HITACHI PLATE 994 532 MACHINE SCREW W SP WASHER M3X5 324 227 324 225 DC SPEED CONTROL SWITCH PUSHING BUTTON B 321 918 HOOK ASS Y W LIGHT INCLUD 38 39 321 672 TAPPING SCREW D2X6 320 288 V LOCK NUT M5 306 952 STRAP BLACK CAUTION PLATE A FOR USA CAN 319 926 HOOK SPRING 320 881 SPECIAL SCREW A M5 315 129 BATTERY EB 14B W ENGLISH N P 315 130 322 883 BATTERY EB 14B W ENGLISH N P BATTERY EB 1426H W
38. agon socket small type 14 65 2 9 16 4 9 16 996180 10 mm Hexagon socket 16 65 2 9 16 6 5 8 996181 10 mm Hexagon socket 17 65 2 9 16 7 21 32 996182 1 2 Hexagon long socket 21 166 6 17 32 21 53 64 996197 e Woodworking drill bit Code No 959183 83 mm 3 17 64 14 mm dia 35 64 XS S on Drill chuck adaptor set Code No 996195 The drill chuck adaptor set permits mounting of various types of locally available drill bits for a variety of drilling operations 10 2 Optional accessories for the Models WR 14DMR WR 18DMR Each dimension and applicable bolt for each hexagon socket Shape C ZZ 5852 i Sq Square Nominal diameter of applicable bolts Dihedral Socket primary dimensions mm drive Part Code ISO width S dimension High en mm Sq strength Ordinary Small type screw L Li D 10 mm 944291 M6 1 4 10 3 8 B 40 1 9 16 8 5 16 18 23 32 12 873632 m M 8 5 16 W 5 16 12 15 32 40 1 9 16 8 5 16 20 25 32 13 mm 873539 8 5 16 13 1 2 40 1 9 16 9 11 32 25 1 14 873540 m M 10 3 8 114 9 16 B 40 1 9 16 9 11 32 25 1 12 7 mm 17 mm 873536 10 3 8 M 12 15 32 W 3 8 1
39. ature rise which occurs on completion of charging automatically turns off the unit to prevent the battery from overcharge Input capacity 70 W Indication method Pilot lamp indicator of battery charging e Function During charging Charging completed 1 In the case of tapping screws wood screws a minimum of 1 8 is possible 2 This torque is based on tightening an M12 9 16 bolt strength grade 12 9 for seconds with a hexagonal socket 9 This torque is based on tightening an M16 5 8 bolt F10T for 3 seconds with a hexagonal socket Main body does not include accessory tools and hook hexagonal bit etc Pilot lamp indications Model UC 14YFA Red pilot lamp remains lit or flashes 2 0 5 sec ON 0 5 sec OFF Prior to charging Blinks Stays ON constantly During charging Lit 3 0 5 sec 0 5 sec OFF Charging completed Blinks 0 1 sec ON 0 1 sec OFF Storage battery or charger Charging not possible Flickers is ird y 9 Green pilot lamp is lit Charging not possible because storage battery temperature is too high High battery Lit Stays ON constantly temperature Models WH 18DMR WR 18DMR Model Cordless impact driver Cordless impact wrench Item WH 18DMR WR 18DMR Small screw M4 M10 5 32 3 8 Ordinary bolt M10 M16 3 8
40. cles in the case of the Model UC 24YFA Nominal capacity 2 6 Ah 3 0 Ah Charger Overcharge protection system UC 24YFA 1 Battery voltage detection V system for Ni Cd battery Mi MH battery temperature detection dT dt system for Ni MH battery 2 Battery surface temperature detection thermostat or thermistor 3 120 minute timer Power input 90 W Charging time Approx 50 minutes for type EB 1820L battery at 20 C 68 F Approx 60 minutes for type EB 1826HL battery at 20 C 68 Approx 70 minutes for type EB 1830HL battery at 20 C 68 F Operable ambient temperature range 0 40 C 32 F 104 F The maximum allowable temperature of the EB 1820L battery is 60 C 1407 and the type 1826HL or EB 1830HL battery is 45 C 113 F Indication method of battery charging function Indications of the pilot lamp Blinks Lights for 0 5 seconds Does not light for RED 0 5 seconds off for 0 5 seconds Sa ae 222 12 While Lights Lights continuously charging RED Charging Blinks Lights for 0 5 seconds Does not light for complete RED 0 5 0 5 seconds off for 0 5 seconds Charging Flickers for 0 1 seconds Does not light for Malfunction in the battery or the impossible RED 0 1 seconds off for 0 1 seconds charger Charging Lights Lights continuously The battery temperature is high impossible GREEN Wa
41. ecautions in Disassembly and Reassembly of Battery Charger Refer to the Technical Data and Service Manual for precautions in disassembly and reassembly of the Model UC 14YFA UC 18YG or UC 24YFA Battery Charger 37 11 STANDARD REPAIR TIME UNIT SCHEDULES MODEL Variable Fixed 10 20 30 40 50 60 min General Assembly Work Flow Hook Ass y Guide Sleeve D DC Speed Control Switch Inner Cover B A B Set Armature and Pinion Set Magnet F Brush Block Anvil Steel Ball Ring Gear D Hammer Spring F Spindle Idle Gear B Set Needle Roller A Ball Bearing 6901VV Housing 39 MODEL Fixed Variable 10 20 30 40 50 60 min General Assembly Work Flow DC Speed Control Switch Hook Ass y A B Set Inner Cover B Armature and Pinion Set Magnet F Brush Block R Hammer Hammer D Case ASSY Steel Ball Anvil Ass y Hammer Ring Gear D Spring F Spindle Idle Gear B Set Needle Roller A Ball Bearing 6901VV Housing Hitachi Power Tools LIST NO G829 ELECTRIC TOOL PARTS LIST CORDLESS IMPACT DRIVER 2005 7 8 Model WH 14DMR E1 WH 14DMR CODE NO DESCRIPTION REMARKS 315 984 RETAINING RING 315
42. eve D 4 Models WH 14DMR WH 18DMR only Insert the two Steel Balls D3 5 9 into the hole of the Anvil 10 Mount Guide Sleeve D 4 Guide Spring A 3 and Washer D 2 in sequence Mount the Push down 2241095 jig B for Retaining Ring 1 into the groove of anvil using the retaining ring Retaining Ring 1 J295 jigs A and B for retaining ring as illustrated in Fig 18 J295 jig A for Washer D 2 retaining ring NOTE Be sure to replace the Retaining Ring 1 with new one because the Retaining Ring 1 may be deformed and Guide Sleeve D 4 may come off if the deformed Retaining Ring 1 is used again 2 lt 7 Reassembly of the hook Fig 18 Check that the V Lock Nut M5 42 lt 39 gt is mounted into the Hook Ass y 40 lt 37 gt Mount the Hook Spring 45 lt 42 gt and secure it with the Special Screw A M5 46 lt 43 gt Make sure to mount the Hook Spring 45 lt 42 gt with its larger diameter side pointing inward the housing 8 Checking the direction of rotation Check whether the direction of rotation of the Anvil 10 or Anvil A Ass y lt 7 gt coincides with the directional markings on the push on side of Pushing Button 89 lt 36 gt When Pushing Button B 39 lt 36 gt is turned to R side the direction of rotation of the Anvil 10 or Anvil A Ass y lt 7 gt should be clockwise as viewed from behind aa 9 Lubrication a ATTOLUB MS No
43. ewdriver Then slowly release the hand press and lift the Hammer 12 lt 9 gt and Washer S 16 lt 13 gt together to extract them from Spindle 18 lt 15 gt Hammer Spring F 15 lt 12 gt can then be removed Raised face of hammer Spindle 18 lt 15 gt Top of spindle cam Steel Ball D5 556 11 lt 8 gt Hammer 12 lt 9 gt Steel ball guide groove Noaoa Fig 9 5 Removal of the Hook Ass y 40 lt 37 gt Remove the Special Screw M5 46 lt 43 gt with a flat blade screwdriver or a coin and remove the Hook Ass y 40 lt 37 gt and the Hook Spring 45 lt 42 gt 20 6 Removal of the Carbon Brushes 5 x 6 x 11 5 31 lt 28 gt Remove the two Brush Caps 32 lt 29 gt Catch the flanges of the Carbon Brushes 5 x 6 x 11 5 31 lt 28 gt with a small flat blade screwdriver and remove the Carbon Brushes 5 x 6 x 11 5 31 lt 28 gt at both sides 7 Removal of housing B Remove the seven Tapping Screws W Flange D4 x 20 Black 33 lt 30 gt from the main body The Strap Black 43 lt 40 gt can be removed by removing the Tapping Screw W Flange D4 x 20 Black 33 lt 30 gt Before removing housing B be sure to remove the Brush Caps 32 lt 29 gt because housing B cannot be removed if the Brush Caps 32 lt 29 gt are mounted 8 Removal of the switch The FET of the DC Speed Control Switch 38 lt 35 gt is firmly inserted in the housing Insert a small flat blade screwdri
44. groove on the Hammer 12 9 as illustrated in Fig 3 Press down either of the raised faces of the Hammer 12 9 with a hand press to compress Hammer Spring F 15 12 until the end surface of the Hammer 12 9 contacts the Spindle 18 152 Insert the two Steel Balls 05 556 111 lt 8 gt into the steel ball guide groove Check that the steel balls properly inserted in the cam groove Then release the hand press d Mount the hammer assembly onto the J297 base for washer S With a hand press push down the top of the Spindle 18 lt 15 gt to compress Hammer Spring F 15 lt 12 gt On this condition mount Stopper B 17 lt 14 gt onto the spindle shaft and then release the hand press 4 Mounting the hammer assembly to the housing Raise the housing assembled in step 2 and mount the hammer assembly to the housing being careful of proper engagement between the Idle Gear Set 19 lt 16 gt of the hammer assembly check that Washer E 22 lt 19 gt is mounted on the Spindle 18 lt 15 gt and Ring Gear C 21 lt 18 gt After mounting check that the hammer assembly turns If the hammer assembly does not turn the gears engage improperly 5 Mounting the hammer case Put the Anvil 10 or Anvil A Ass y lt 7 gt on the Spindle 18 lt 15 gt Cover it with the Hammer Case 8 lt 4 gt and secure with the four Tapping Screws W Sp Washer D4 x 30 Black 7 lt 3 gt 6 Mounting Guide Sle
45. ield point or durable force 45 500 psi Tensile strength of the bolt 56 900 psi kgf cm in lbs M14 x 50 1600 160 1389 High strength bolt 1400 140 1215 1200 120 o 1042 100 5 1000 A o 868 Ordinary bolt 800 80 694 5 600 60 521 400 H 40 347 200 20 174 0 0 0 1 2 3 Tightening time sec Steel plate thickness 25 Model WH 18DMR Tightening torque kgf cm tice Nm M10x 30 nbs degn 160 1389 High strength bolt 1389 High sirengih bolt 215 12 1200 120 1040 100 100 5 1000 868 g 9 800 80 E 694 Ordinary bolt L Ordinary bolt _ 2 600 60 600 60 D 521 521 400 40 de am 200 F 20 200 7 28 174 0 0 0 0 2 1 3 i ht s i ightening time sec Tightening ume Seu Steel plate thickness Steel plate thickness t 25 mm t 10 mm H Fig 5 2 Model WR 14DMR kgf cm kgf cm in bs 10 30 in lbs 12 45 2000 200 2000 200 High strength bolt S 1736 High strength bolt 1736 S 1500 150 1500 150 1302 9 1302 1000 100 1000 100 868 868 Ordinary bolt 500 5
46. ilicone grease KS609 Shin Etsu Chemical Co Ltd to the contacting surfaces of the FET of the DC Speed Control Switch 38 lt 35 gt and Dust Guard Fin B 29 lt 26 gt then mount them to housing A NOTE 1 The temperature of the FET may be high if the silicone grease is not applied Make sure that the three internal wires from the FET are passed above the DC Speed Control Switch 38 35 see Fig 17 2 If there is no plating and a black oxide is formed on the terminal support where the battery contacts replace the terminal support with new one Code No 323710 Otherwise heat is generated due to contact failure and the battery or the main body may be faulty f Apply silicone rubber ThreeBond 1211 to housing A and Inner Cover B 25 22 as illustrated in Fig 17 Attach the strap to the boss as shown in Fig 17 then mount housing B and tighten the eight Tapping Screws W Flange D4 x 20 33 30 Wipe off silicone rubber protruded from the housing with a cloth Apply silicone rubber Position the blade of dust guard fin B under the rib of housing A Attach the strap to the boss Fig 17 8 Mounting the mechanical parts a Mount the Hammer 12 9 containing the twenty eight Steel Balls 03 175 13 10 Washer J 14 11 and Hammer Spring F 15 12 to Spindle 18 15 b Align the top of the cam groove on the Spindle 18 15 with the steel ball guide
47. ill become worn and loose Wear and looseness will cause a proportionate loss of tightening torque In addition use of an incorrect size socket slightly larger than the bolt being tightened will also result in decreased torque 7 Bolt and nut rotate together Tightening torque that can be achieved will be considerably decreased if the bolt and nut rotate together during the tightening operation The customer should be advised to carefully observe the operation and ensure this does not occur 8 4 Suggestions and Precautions for the Efficient Use of the Charger 1 Batteries may not be rechargeable immediately after use If the storage batteries are exposed to direct sunshine for an extended period or if the temperature of the batteries is 40 104 F or higher immediately after they have been used in the tool the pilot lamp may not light up when the batteries are connected to the Model UC 14YFA UC 24YFA or UC 18YG Charger This is because the built in thermostat functions to stop the charging when the temperature of the storage batteries reach 40 C 104 F or more In such a case the customer should be advised to place the batteries in a shaded area with a good airflow and allow sufficient cooling before recharging This phenomenon is common to all existing batteries which employ temperature sensitive overcharge devices The cooling time required before charging can be accomplished varies from a few minutes to about 30 minutes depe
48. ill chuck adapter Applicable Markets Wood product assembly Tightening loosening of wood screws Construction industry Assembly of scaffolding roofing aluminum sashes fencing etc removal of plastic cones from concrete forms mounting removal of form ties drilling into the wood frames of concrete forms etc Manufacturing industry Assembly work for automobiles rolling stock shipbuilding agricultural machinery and tools industrial machines steel furniture etc Utility industry Assembly and installation of electric equipment plumbing facilities air conditioning duct assembly etc sanitary fixtures and various other facilities e Service industry General repair work installation of advertising aids automobile repair assembly of garages and carports storage sheds etc Various other assembly construction or repair facilities 4 STANDARD EQUIPMENT Models WH 14DMR WR 14DMR 1 2BGK specification Two EB 14B batteries NiCd capacity 2 0 Ah UC 18YG charger and case 2 2BFK specification Two EB 14B batteries NiCd capacity 2 0 Ah UC 14YFA charger and case 3 2HFK specification Two 1426H or EB 1430H batteries NiMH capacity 2 6 Ah or 3 0 Ah UC14YFA charger and case Models WH 18DMR WR 18DMR 1 2BLGK specification Two EB 1820BL batteries NiCd capacity 2 0 Ah UC 18YG charger and case 2 2BLFK specification Two EB 1820BL batteries NiCd capacity 2 0 Ah UC 24YFA charger and case 3
49. in lbs 500 434 in lbs 100 4 Impact wrench 18 kgf cm 3000 2604 in lbs 2500 2170 in lbs 2000 1736 in lbs 1500 1302 in lbs 1000 868 in lbs 500 434 in lbs N m 3 250 WR 18DMR 0 1 2 3 sec 116 WR 14DM Test conditions Bolt M16 55 mm 5 8 x 2 5 32 F10T Steel plate Mild steel A Thickness 25 mm 4 Accessory tool Hexagon socket ass y 2 WR 14DMR z P3 0 1 2 3 sec Test conditions Bolt M16 x 55 mm 5 8 x 2 5 32 F10T Steel plate Mild steel Thickness 25 mm Accessory tool Hexagon socket ass y 7 3 2 Screw diameter and appropriate tightening torque Generally speaking the appropriate tightening torque for a screw can be determined by the strength grade of the screw and the material tightened Tables 1 and 2 and Fig 4 below list data relative to the strength grade of various screws and the appropriate tightening torque For further reference appropriate tightening torque is calculated with the following formula Study and use this formula for accurate selection of tightening torque T k d p T Appropriate tightening torque kgf cm d Nominal diameter for the screw mm p Recommended axial tightening force to be applied to the screw kgf p rated axial stress kgf cm x 0 8 x effective sectional area of the thread mm k Torque coefficient Strength grade and rated axial stress of threads 0 17
50. ip mounting system 1 2 square drive 1 2 square 1 2 square drive 1 2 square drive 1 2 square drive Plunger type Plunger type Plunger type Plunger type Plunger type Trigger switch with Trigger switch with Trigger switch with Trigger switch with Trigger switch with forward reverse forward reverse forward reverse forward reverse forward reverse changeover pushing button with brake and and variable and variable and variable and variable variable Type of motor DC magnet DC magnet DC magnet DC magnet DC magnet Voltage V 144 14 4 14 4 18 18 Current A 27 26 26 23 22 Type ere on 14 or EB1430H DW9091 z DW9096 EB 14B 2 0 1820BL Nominal capacity Ah 1426 2 6 EB 14B 8 1 7 1826HL 2 6 2 4 1430H 3 0 EB 1430H 3 0 1830 3 0 m Nominal voltage V 14 4 14 4 14 4 18 18 Ambient temperature 0 40 0 40 0 40 UC 14YFA or 24YFA or 5 Model UC 18YG UC 14YF2 DW9107 UC 18YG DW9116 gt we VA UC 14YFA 56 UC 14YF2 44 24 90 Power input capacity UC 18YG 70 UC 14YFA 56 UC 18YG 70 O UC 14YFA 7 2 144 UC 24YFA 7 2 24 Recharging voltage V UC 18YG 7 2 18 7 2 144 72 144 UC 18YG 7 2 18 7 2 18 Plastic tool e Plastic tool Plastic tool Plastic tool Plastic tool Standard accessories Charger
51. nding on the load duration of use and ambient temperature 26 9 OTHER PRECAUTIONS 1 Check for cracks or other damage on the socket Cracks or any other faults on the socket are very hazardous addition cracks or other damage to accessories will cause loss of tightening torque efficiency Advise the customer to inspect accessories often and ensure there are no abnormalities 2 Socket dimensions Without fail utilize an appropriate socket which matches the bolt and or nut dimensions If the socket dimensions are larger than the bolts or nuts it will not only cause insufficient tightening torque but could also easily cause damage to the socket Please refer to the tables in Para 6 2 for appropriate socket dimensions 3 Hammering section lubrication Grease Molub Alloy 777 1 is utilized in the hammering section Frequent or continuous use of the tool will cause excessive temperature rise of the hammering section resulting in depletion of the grease and subsequent increased wear of components which will in turn cause loss of tightening efficiency Accordingly it is necessary to periodically replenish the grease in the hammering section to ensure proper lubrication of moving and sliding components 07 10 REPAIR GUIDE WARNING Without fail remove the battery from the main body before starting repair or maintenance work Because the tool is cordless if the battery is left in and the switch is activated inadverten
52. ndrical nickel cadmium batteries Nominal voltage DC 14 4 V Nominal life Charging discharging approximately 300 cycles in the case of the Model UC 18YG Nominal capacity 2 0 Ah Model UC 14YFA Battery Sealed cylindrical nickel metal hydride batteries Type EB 1426H Nominal voltage DC 14 4 V EB 1430H Nominal life Charging discharging approximately 500 cycles in the case of the Model UC 14YFA Nominal capacity 2 6 Ah 3 0 Ah Charger Charger power source single phase AC 50 60 Hz Voltage Depending on the order specification Power input 56 W Charging system Constant current charge with feedback control Overcharge protection system 1 Battery voltage detection V system Battery temperature detection dT dt system for Ni MH battery 2 Battery surface temperature detection thermistor 3 120 minute timer Output voltage 7 2 V 14 4 V Output current 2 6 A Charging time Approx 50 minutes for BL type EB 14B battery at 20 C Approx 60 minutes for type EB 1426H battery at 20 Approx 70 minutes for HL type EB 1430H battery at 20 C Product weight 0 6 kg Operable ambient temperature range 0 40 The maximum allowable temperature of the EB 14B type battery is 55 C and the EB 1426H or EB 1430H type battery is 45 C ues Charger Model UC 18YG Overcharge prevention circuit A thermostat monitors the surface temperature of the battery and on detecting the temper
53. ny other power source DC outlet fuel powered generator etc will cause the charger to overheat and burn out 5 Do not use any voltage increasing equipment transformer etc between the power source and the charger If the charger is used with voltage over and above that indicated on the unit it will not function properly 6 Conduct battery charging at an ambient temperature range of 0 40 C 32 F 104 F Special temperature sensitive devices are employed in the charger to permit rapid charging Ensure that customers are instructed to use the charger at the indicated ambient temperature range At temperatures under 0 C 32 F the thermostat will not function properly and the storage battery may be over charged At temperatures over 40 104 F the storage battery cannot be sufficiently charged The optimum temperature range is 20 25 68 F 77 F 7 The battery charger should not be used continuously At high ambient temperatures if over three storage batteries are charged in succession the temperature of the coils on the transformer will rise and there is a chance that the temperature fuse inserted in the interior of the transformer will inadvertently melt After charging one battery please charge the next battery after about a fifteen minute interval 8 The charger case is equipped with air vents to protect the internal electronic components from overheating Caution the customer not t
54. o allow foreign materials such as metallic or flammable objects to be dropped or inserted into the air vents This could cause electric shock fire or other serious hazards op 9 Do not attempt to disassemble the storage battery or the charger Special devices such as a thermostat are built into the storage battery and charger to permit rapid charging Incorrect parts replacement and or wiring will cause malfunctions which could result in fire or other hazards Instruct the customer to bring these units to an authorized service center in the event repair or replacement is necessary 10 Disposal of the storage batteries Ensure that all customers understand that the Storage Batteries should be returned to the Hitachi power tool sales outlet or authorized service center when they are no longer capable of being recharged or repaired If thrown into a fire the batteries may explode or if discarded indiscriminately leakage of the cadmium compound contained in the battery may cause environmental pollution B Caution Plates 1 The following precautions are listed on the Name Plate or Caution Plate attached to the main body of each tool For the U S A excludes French or Canada WARNING To reduce the risk of injury user must read and understand Instruction Manual AVERTISSEMENT e Afin de r duire le risque de blessures l utilisateur doit lire et bien comprendre le mode d emploi For Oceania CAUTION Read thoroughl
55. points Selling points of the Models WH 14DMR WH 18DMR Class top tightening speed and torque e WH 14DMR 140 N m 1430 kgf cm 1240 in Ibs WH 18DMR 150 1530 kgf cm 1330 in Ibs Both the Models WH 14DMR and WH 18DMR are equipped with a relatively inexpensive magnet and the entire length is significantly shorter than the previous models respectively However the performance is superior to the competitors thanks to the large hammer and the optimized impact timing Comparison of measured data with the previous model and the competitors is shown below Tightening time comparison Figure 1 shows the time required for tightening a wood screw 5 3 mm dia x 120 mm length into a lauan workpiece WH 14DMR 10 higher than P1 WH 18DMR 15 higher than P2 lt Fast Slow Voltage Model 2 4 6 8 sec 14 4 HITACHI WH 14DMR 6 5 sec 14 4 HITACHI WH 14DM 1 14 4 1 kYw EE 18 HITACHI WH 180 i 5 7 sec 18 P2 EU 61 sec Fig 1 Tightening time comparison Tightening time may vary depending on hardness of the workpiece ambient temperature characteristics of the battery etc 2 Tightening torque comparison Nm i i 1800 1562 in Ibs 180 Figure 2 shows the torque required for 1600 155 162 tightening an M14 high strength tension 1400 1215 in lbs 140
56. recognizes the importance of the contents of the Handling Instructions and fully understands the meaning of the precautions listed on the Caution Plate and Name Plate attached to each tool A Handling Instructions Salespersons must be thoroughly familiar with the contents of the Handling Instructions in order to give pertinent advice to the customer In particular they must have a thorough understanding of the precautions in the use of the cordless battery charger type electric power tools which are different from those of ordinary electric power tools 1 Before use ensure that the unit is fully charged New units are not fully charged Even if the units were fully charged at the factory long periods without use such as during shipping cause the storage battery to lose its charge Customers must be instructed to fully charge the unit prior to use 2 When charging storage batteries use only the exclusive Model UC 14YFA UC 24YFA or UC 18YG Charger provided with the tool Because of the designed rapid charging feature use of other battery chargers is hazardous 3 Follow prescribed steps in using the charger First connect the Storage Battery to the Charger then plug the charger into an AC outlet ensuring that the voltage matches that indicated on the unit If this order is reversed the charger may not function properly 4 Ensure the power source voltage is the same as that indicated on the Name Plate of the charger Use of a
57. rence purposes only because actual tightening torque will vary depending on tightening conditions 6 SPECIFICATIONS 6 1 Specifications Models WH 14DMR WR 14DMR Model Cordless impact driver Cordless impact wrench Item WH 14DMR WR 14DMR Small screw M4 M10 5 32 3 8 Ordinary bolt M10 M16 3 8 5 8 Capacity Ordinary bolt M6 M14 1 4 9 16 High strength bolt M6 M12 1 4 15 32 High strength bolt M8 M14 5 16 9 16 Tightening torque 140 N m 1430 kgf cm 1240 in lbs 200 N m 2040 kgf cm 1770 in Ibs Tip condition 6 35 mm 1 4 Bit holder 12 7 mm 1 2 Square drive Type of motor Fan cooled rare earth magnet motor Enclosure Main body Polyamide resin elastomer Housing Aluminum alloy die casting Hammer case 5 veni sen rl ata ke Protector Storage battery Polyamide resin black Charger ABS resin black Type of switch Trigger switch with forward reverse changeover pushing button with brake Handle configuration T type No load rotational speed 0 2 600 min Impact rate 0 3 200 min Main bod 1 8 kg 3 9 Ibs Incl ttery Weight y 8 kg 3 9 Ibs Includes battery Battery 0 86 kg 1 9 Ibs Overall length x height 162 mm 6 3 8 x 236 mm 9 19 64 167 mm 6 37 64 x 236 mm 9 19 64 Center height 27 mm 1 1 16 Battery Type EB 14B Sealed cyli
58. tly the motor will start rotating unexpectedly which could cause serious injury 10 1 Precautions in Disassembly and Reassembly The bold and bold numbers correspond to the item numbers in the Parts List and the exploded assembly diagram WH 14DMR WH 18DMR lt gt WR 14DMR WR 18DMR 10 1 1 Disassembly 1 Removal of Guide Sleeve D 4 Models WH 14DMR WH 18DMR only Remove the Retaining Ring 1 Washer D 2 Guide Spring A 3 and Guide Sleeve D 4 in order by following the procedure shown in Figs 7 1 to 7 4 Be sure not to lose the two Steel Balls D3 5 9 in Anvil B 10 Anvil B 10 Small flat blade screwdriver Retaining Ring 1 Washer D 2 Gap of retaining ring Guide Sleeve D 4 Fig 7 1 Fig 7 2 Hold the body and adjust the gap of the retaining Press down washer D with the small flat blade ring to the groove of anvil B then insert a small screwdriver flat blade screwdriver into the groove at an angle Fig 7 3 Slide the small flat blade screwdriver under one side Slowly raise the retaining ring using the end face of of the gap of the retaining ring guide sleeve D as a fulcrum Then slowly raise the other side of the retainer ring with the small flat blade screwdriver until it is free Avoid quickly raising the retainer ring or it may fly out forcefully ge 2 Removal of Front 5 lt 1 gt and Protector 6 lt 2 gt
59. ture and Inner Cover B 25 lt 22 gt Pinion Set Damper A 24 lt 21 gt Inner Cover B 25 lt 22 gt 26 lt 23 gt 26 lt 23 gt pinion Armature and Pinion Set Side Yoke A 27 lt 24 gt Dust Guard Fin B 29 lt 26 gt to the concave of the brush block Ring Gear C 21 lt 18 gt Adjust the convex of dust guard fin B Brush Block 30 lt 27 gt Fig 10 11 Removal of the Armature and Pinion Set 26 lt 23 gt Support Inner Cover B 25 lt 22 gt so that it does not contact the fan of the Armature and Pinion Set 26 lt 23 gt With a hand press push down the tip portion of the Armature and Pinion Set 26 lt 23 gt pinion to remove it 12 Removal of Ring Gear C 21 lt 18 gt and Damper A 24 lt 21 gt Remove Ring Gear C 21 lt 18 gt from Inner Cover B 25 lt 22 gt and remove Damper A 24 lt 21 gt with a small flat blade screwdriver Ring Gear C 21 18 is firmly inserted in Inner Cover B 25 22 Insert a small flat blade screwdriver between Ring Gear C 21 18 and Inner Cover B 25 22 to remove Ring Gear C 21 18 Remove Damper A 24 21 with a small flat blade screwdriver 94 Armature and Pinion Set 26 lt 23 gt pinion 21 lt 18 gt 22 lt 19 gt 23 lt 20 gt 24 lt 21 gt 25 lt 22 gt Fig 11 10 1 2
60. ver between the FET and housing B to raise and remove the FET Then Inner Cover B 25 lt 22 gt Armature and Pinion Set 26 lt 23 gt Magnet F Ass y 28 lt 25 gt Brush Block 30 lt 27 gt and DC Speed Control Switch 38 lt 35 gt can be removed in a piece Pushing Button 39 lt 36 gt can also be removed NOTE Be careful not to break the three legs coming from the FET to avoid malfunction of the switch 9 Removal of the switch assembly Remove the two Machine Screws W Sp Washer x 5 37 34 that secure the flag terminal and then disconnect the internal wires red and black of the Brush Block 30 lt 27 gt from the DC Speed Control Switch 38 lt 35 gt NOTE Do not disconnect the three FET internal wires soldered to the DC Speed Conirol Switch 38 lt 35 gt 10 Removal of Magnet F Ass y 28 lt 25 gt Dust Guard Fin B 29 lt 26 gt and Side Yoke A 27 lt 24 gt Remove Magnet F Ass y 28 lt 25 gt in the B direction see Fig 10 holding Inner Cover B 25 lt 22 gt securely because Magnet F Ass y 28 lt 25 gt has a strong magnetism Dust Guard Fin B 29 lt 26 gt and Side Yoke A 27 lt 24 gt can be easily removed from Magnet F Ass y 28 lt 25 gt by holding Magnet F Ass y 28 lt 25 gt securely and pulling them in the direction of diameter because they are mounted to Magnet F Ass y 28 25 magnetically 30 Magnet F Ass y 28 lt 25 gt Arma
61. w making recharging impossible Before charging Charger Model UC 18YG Overcharge prevention circuit A thermostat monitors the surface temperature of the battery and on detecting the temperature rise which occurs on completion of charging automatically turns off the unit to prevent the battery from overcharge Input capacity 70 W Indication method Pilot lamp indicator of battery charging e Function On During charging Off aia Charging completed 1 In the case of tapping screws wood screws minimum of 1 8 is possible 2 This torque is based on tightening an M14 9 16 bolt strength grade 12 9 for 3 seconds with a hexagonal socket 3 This torque is based on tightening an M16 5 8 bolt F10T for 3 seconds with a hexagonal socket Main body does not include accessory tools and hook hexagonal bit etc 6 2 Optional Accessories 1 Optional accessories for the Models WH 14DMR WH 18DMR Plus driver bit Bit No Code No No 2 992671 50 mm 2 No 3 992672 Hexagon socket Stamped figures n oa Part name Stamped figures B Code No mm mm 5 mm Hexagon socket 8 65 2 9 16 8 5 16 996177 6 mm Hexagon socket 10 65 2 9 16 10 3 8 985329 5 16 Hexagon socket 12 65 2 9 16 12 15 32 996178 8 mm Hexagon socket 13 65 2 9 16 3 1 2 996179 10 mm Hex
62. y HANDLING INSTRUCTIONS before use 2 The following cautions are listed on the Name Plate attached to each storage battery For Europe n Read thoroughly HANDLING INSTRUCTIONS before use Do not disassemble nor throw into fire For the U S A and Canada CAUTION For safe operation see Instruction Manual Use HITACHI charger recommended in instruction manual for recharging 3 The following caution is listed on the Name Plate attached to the Model UC 14YFA Charger For the U S A CAUTION For safe operation see Instruction Manual Charge HITACHI rechargeable batteries Type EB 7 EB 9 EB 12 and EB 14 series Other types of batteries may burst causing personal injury and damage Charge between 32 and 104 F Indoor use only Replace defective cord immediately J DG 4 The following caution is listed the Name Plate attached to the Model UC 18YG Charger For the U S A CAUTION For safe operation see Instruction Manual Charge HITACHI rechargeable batteries Type EB 7 EB 9 EB 12 EB 14 and EB 18 series Other types of batteries may burst causing personal injury and damage Charge between 32 and 104 F Indoor use only V Replace defective cord immediately A 5 The following caution is listed on the Name Plate attached to the Model UC 24YFA Charger For the U S A CAUTION For safe operation see Instruction Manual Charge

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