Hitachi WH9DM Technical Data And Service Manual Download Page 3

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CONTENTS

1. PRODUCT NAME ...........................................................................................................................1

2. MARKETING OBJECTIVE .............................................................................................................1

3. APPLICATIONS ..............................................................................................................................1

4. SELLING POINTS ..........................................................................................................................2

4-1. Selling Point Descriptions .............................................................................................................. 4

5. SPECIFICATIONS ..........................................................................................................................6

5-1. Specifications ................................................................................................................................. 6

5-2. Optional Accessories ..................................................................................................................... 7

6. COMPARISONS WITH SIMILAR PRODUCTS ............................................................................10

6-1. Specification Comparisons (Cordless Impact Driver) .................................................................. 10

6-2. Specification Comparisons (Cordless Impact Wrench) ................................................................ 11

6-3. Tightening Torque ........................................................................................................................ 12

6-4. Tightening Speed ......................................................................................................................... 15

6-5. Number of Screws or Bolts Driven ............................................................................................... 16

7. PRECAUTIONS IN SALES PROMOTION ...................................................................................17

7-1. Safety Instructions ....................................................................................................................... 17

7-2. Tightening Torque Inspection Prior to Operation ......................................................................... 19

7-3. Tightening Torque Variation ......................................................................................................... 19

7-4. Suggestions and precautions for the Efficient Use of the Charger .............................................. 20

8. OTHER PRECAUTIONS ..............................................................................................................21

9. REPAIR GUIDE ............................................................................................................................22

9-1. Precautions in Disassembly and Reassembly ............................................................................. 22

9-2. Precautions in Disassembly and Reassembly of Battery Charger .............................................. 29

10. STANDARD REPAIR TIME (UNIT) SCHEDULES .....................................................................30

Assembly Diagram for WH 9DM

Assembly Diagram for WR 9DM

Summary of Contents for WH9DM

Page 1: ...E MANUAL CORDLESS IMPACT DRIVER WH 9DM CORDLESS IMPACT WRENCH WR 9DM SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST Nos WH 9DM F863 WR 9DM F865 Oct 2001 W MODEL WH 9DM WH 9DM WR 9DM WR 9DM 2000mAh WH 9DM 2000mAh WR 9DM ...

Page 2: ... 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 Symbol Utilized Competitor Company Name Model Name C MAKITA 6990D WH 9DM ...

Page 3: ...g Torque 12 6 4 Tightening Speed 15 6 5 Number of Screws or Bolts Driven 16 7 PRECAUTIONS IN SALES PROMOTION 17 7 1 Safety Instructions 17 7 2 Tightening Torque Inspection Prior to Operation 19 7 3 Tightening Torque Variation 19 7 4 Suggestions and precautions for the Efficient Use of the Charger 20 8 OTHER PRECAUTIONS 21 9 REPAIR GUIDE 22 9 1 Precautions in Disassembly and Reassembly 22 9 2 Preca...

Page 4: ... Tightening loosening of small screws tapping screws wood screws bolts nuts etc Drilling into wood and various other materials with use of optional accessory drill chuck adapter Applicable Markets Wood product assembly Tightening loosening of wood screws lag bolts etc Construction industry Assembly of scaffolding roofing aluminum sashes fencing etc removal of plastic cones from concrete forms moun...

Page 5: ... top tightening speed 30 faster than the previous model Example When tightening a wood screw 90 mm in length WH 9DM 3 8 seconds WH 8DH 5 2 seconds C 5 0 seconds Reference WH 12DM new model 2 9 seconds WH 12DH previous model 4 1 seconds Compact body Overall length of the Model WH 9DM compared with following models WH 8DH 9 mm C 1 mm Reference WH 12DM 0 mm Height of the Model WH 9DM with respect to ...

Page 6: ...ble flat battery interchangeable High durability dust resistance and long service life Compact body Overall length of the Model WR 9DM compared with following models WR 8DH 14 mm Reference WR 12DM 6 mm Height of the Model WR 9DM with respect to WR 8DH 1 mm Reference WR 12DM 5 mm Lightweight Weight of the Model WR 9DM compared with following models WR 8DH 200 g WR 12DM 200 g 9 5 mm 3 8 Reference WR...

Page 7: ... product The reason why the Models WH 9DM WR 9DM are heavier than C by 80 g is because they are equipped with a metal ring gear while C is equipped with a plastic ring gear In performance however the Model WH 9DM provides 30 faster tightening speed than C and this is the class top speed 2000mAh WH 9DM H L A Model Unit mm A Center height mm H Height mm L Overall length Actual weight kg kg Catalog w...

Page 8: ...del WH 8DH and C is shown below refer to pages 15 and later for detailed data on the tightening time and the working capacity For reference the tightening speed of the Model WH 9DM is about 8 higher than the previous Model WH 12DH 12 V product though it is about 40 slower than the Model WH 12DM HITACHI WH 9DM HITACHI WH 8DH C 3 8 sec Model 5 10 sec 5 2 sec 5 0 sec Reference 12 V product 2 4 sec 4 ...

Page 9: ... 0 Ah 167 mm 6 37 64 x 221 mm 8 7 Battery Type EB 930H Sealed cylindrical nickel metal hydride batteries Nominal voltage DC 9 6V Nominal life Charging discharging approximately 500 cycles in case of Model UC 14YF2 Nominal capacity 3 0 Ah 1 In the case of tapping screws and wood screws a minimum of M3 1 8 is possible 2 This torque is based on tightening an M12 15 32 bolt strength grade 12 9 for 3 s...

Page 10: ...ssories 1 Optional accessories for the Model WH 9DM Plus driver bit 50 mm 2 Bit No No 2 No 3 Code No 992671 992672 Hexagon socket L B Stamped figures 996177 8 5 16 65 2 9 16 8 Stamped figures 5 mm Hexagon socket Part name L mm B mm Code No 985329 10 3 8 65 2 9 16 10 6 mm Hexagon socket 996178 12 15 32 65 2 9 16 12 5 16 Hexagon socket 996179 13 1 2 65 2 9 16 13 8 mm Hexagon socket 996180 14 9 16 65...

Page 11: ...1 5 16 33 1 5 16 B B C B B D D D D 8 5 16 10 3 8 12 15 32 13 1 2 14 9 16 16 5 8 17 21 32 18 23 32 19 3 4 W 5 16 W 3 8 W 7 16 M 5 3 16 M 6 1 4 M 8 5 16 M 10 3 8 M 10 3 8 M 12 15 32 M 12 15 32 996125 996126 996127 996128 996129 996130 996131 996132 996133 Hexagon socket 9 5 3 8 Square drive dimension Sq mm Part name Code No Nominal diameter of applicable bolts Dihedral width H mm Shape Socket primar...

Page 12: ...8 M 10 3 8 M 12 15 32 M 12 15 32 996134 996135 996136 996137 996138 996139 996140 996141 996142 Long socket 9 5 3 8 Square drive dimension Sq mm Part name Code No Nominal diameter of applicable bolts Dihedral width H mm Shape Socket primary dimensions mm ISO Ordinary ISO Small Inch L L1 M 8 5 16 M 10 3 8 M 12 15 32 M 14 9 16 12 15 32 12 15 32 14 9 16 14 9 16 15 19 32 15 19 32 15 19 32 16 5 8 17 21...

Page 13: ...lbs 1 6 3 5 lbs 1 41 3 1 lbs Main body weight kg 70 67 70 No load sound pressure level dB A Driver chuck Driver chuck Driver chuck Tool tip mounting system Trigger switch with forward reverse changeover pushing button with brake and variable Type of switch Trigger switch with forward reverse changeover pushing button with brake and variable Trigger switch with forward reverse changeover pushing bu...

Page 14: ...t EB 9B or EB 930H Battery V A Type EB 9B 2 0 EB 930H 3 0 Nominal capacity Ah 9 6 Nominal voltage V 0 40 Ambient temperature C UC 14YF2 Model 44 Power input capacity VA 7 2 14 4 Recharging voltage V Plastic tool case Charger UC 14YF2 Standard accessories Charger 1 Max tightening torque is based on tightening an M12 5 32 bolt strength grade 12 9 for 3 seconds with a hexagon socket 2 Main body weigh...

Page 15: ...has lower tightening torque than the Model WR 8DH square dimension 12 7 mm 1 2 because the square drive dimension is 9 5 mm 3 8 Test conditions Bolt M12 x 45 mm 15 32 x 1 3 4 strength grade 12 9 Steel plate Mild steel M12 15 32 Thickness 25 mm 1 Accessory tool Hexagon socket ass y WH 9DM WH 8DH 200 174 in lbs 0 1 2 3 400 347 in lbs 600 521 in lbs 800 694 in lbs 1000 868 in lbs kgf cm Tightening ti...

Page 16: ...he thread mm2 Strength grade and rated axial stress of threads Strength grade Rated axial stress kgf mm2 Material Heat treatment 4 8 6 8 8 8 12 9 29 1 43 7 58 2 95 Mild steel Alloy steel including Ni Mn Cr etc None Processed hard material Diameter and effective sectional areas of threads Kind of thread x pitch Effective sectional area of thread mm2 M5 x 0 8 mm 3 16 14 2 M6 x 1 mm 1 4 20 1 M8 x 1 2...

Page 17: ...868 kgf cm in lbs Tightening time sec Steel plate thickness t 3 8 10 mm 5 16 x 1 3 6 M8 x 30 Tightening torque High strength bolt 0 0 20 40 60 80 100 N m 200 174 0 1 2 3 400 347 600 521 800 694 1000 868 kgf cm in lbs Tightening time sec Steel plate thickness t 3 8 10 mm 3 8 x 1 3 6 M10 x 30 Tightening torque High strength bolt 0 0 20 40 60 80 100 N m Ordinary bolt 0 1 2 3 Tightening time Steel pla...

Page 18: ... Fast Slow 1 2 3 4 5 6 7 8 9 10 6 4 Tightening Speed The tables below show the tightening speeds for individual screw types and sizes Please note that the data below are intended for general reference only as the actual tightening speed will vary depending on the tightening conditions such as ambient temperature and characteristics of battery 3 Wood screw 4 2 mm dia x 75 mm length soft wood 4 Wood...

Page 19: ...0 mm soft wood 385 400 425 Wood screw 4 2 mm dia x 90 mm hard wood 80 75 63 Wood screw 5 3 mm dia x 120 mm hard wood 35 33 30 Machine screw M8 x 16 mm 1 025 1 060 1 130 Note 1 The Model WH 9DM is equipped with the higher power motor for the higher tightening speed Although the higher tightening speed is realized the Model WH 9DM has the following disadvantage High startup current The Model WH 9DM ...

Page 20: ...d 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 any 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 ...

Page 21: ...zed service center in the event repair or replacement is necessary 10 Disposal of the Type EB 9B or EB 930H Storage Battery Ensure that all customers understand that Type EB 9B or EB 930H Storage Batteries should be turned into any 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 expl...

Page 22: ...wrench or torque driver at the beginning of the tightening operations and as necessary during the tightening operations In addition the torque values shown in Para 6 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 th...

Page 23: ... of the driver chuck which is fitted onto the anvil in the main body will 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 t...

Page 24: ...orque but could also easily cause damage to the socket Please refer to the tables in Para 5 2 for appropriate socket dimensions 3 Hammering section lubrication Grease ATTOLUB MS No 2 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 componen...

Page 25: ... in order by following the procedure shown in Figs 5 1 to 5 4 Be sure not to lose the two Steel Balls D3 5 8 in Anvil C 9 Hold the body and adjust the gap of the retaining ring to the groove of anvil B then insert a small flat blade screwdriver into the groove at an angle Press down the Washer D with the small flat blade screwdriver Fig 5 2 Fig 5 1 1 2 Small flat blade screwdriver Anvil C 9 Retain...

Page 26: ...om the J 297 base for washer S and support the end surface of the Spindle 17 12 With a hand press push down either of the raised faces of Hammer A 11 6 to compress the Hammer Spring 14 9 In this position extract the two Steel Balls D5 556 10 5 from the cam grooves of the Spindle 17 12 and Hammer A 11 6 with a small flat blade screwdriver or a similar tool Then slowly release the hand press and lif...

Page 27: ...move the two Machine Screws W SP Washer M3 x 5 35 30 that secure the flag terminal and then disconnect the internal wires purple and black of the Brush Block 28 23 from the DC Speed Control Switch 36 31 Note Do not disconnect the three FET internal wires soldered to the DC Speed Control Switch 9 Removal of the Magnet 26 21 and the Dust Guard Fin 27 22 Remove the Magnet 26 21 in the B direction see...

Page 28: ...ntion should be given to the following items 1 Reassembly of the housing assembly a Be sure to follow the wiring diagram Fig 10 for proper wiring b When connecting the internal wires of the Brush Block 28 23 to the DC Speed Control Switch 36 31 fasten them with the Machine Screw W SP Washer M3 x 5 35 30 paying attention to the direction of the flag terminal Fig 10 Note If the flag terminal is moun...

Page 29: ... rib of the Ring Gear 20 15 to the concave portion of the Damper 23 18 Press fit the Armature Ass y 25 20 into the Inner Cover 24 19 Adjust the convex portion of the Dust Guard Fin 27 22 to the concave portion of the Brush Block 28 23 see Fig 11 Adjust the notch for locking of the Magnet 26 21 to the protrusion of housing A see Figs 11 and 12 Position the plate of the Dust Guard Fin 27 22 under th...

Page 30: ...the DC Speed Control Switch 36 31 see Fig 13 2 Mount the Strap 41 36 to housing A and apply silicone rubber ThreeBond 1211 to housing A as shown in Fig 13 Mount housing B to housing A and secure them with seven Tapping Screws W Flange D4 x 20 Black 31 26 Wipe the silicone rubber coming out of the housing with a cloth 3 Mounting the mechanical parts a Put Washer S 15 10 onto the shaft of the Spindl...

Page 31: ...ot turn the gears engage improperly 5 Mounting the hammer case Put Anvil C 9 or Anvil M 4 on the Spindle 17 12 Cover it with the Hammer Case 7 3 and secure with the four Tapping Screws W SP Washer D4 x 25 Black 6 2 6 Mounting Guide Sleeve A 4 WH 9DM only Insert the two Steel Balls D3 5 8 into the hole of Anvil C 9 Mount the Guide Sleeve A 4 Guide Spring 3 and Washer D 2 in sequence Mount the Retai...

Page 32: ...ls D3 5 8 Sliding section between Anvil C 9 and Guide Sleeve A 4 c MOLUB ALLOY 777 1 All around the Needle Roller 19 14 5 mm diameter hole of Idle Gear Set 2 pcs 18 13 10 Screw tightening torque Tapping Screw W SP Washer D4 x 25 Black 6 2 1 96 0 49 N m 20 5 kgf cm 17 4 4 3 in lbs Tapping Screw W Flange D4 x 20 Black 31 26 1 96 0 49 N m 20 5 kgf cm 17 4 4 3 in lbs Machine Screw W SP Washer M3 x 5 3...

Page 33: ...ixed Variable WH 9DM Work Flow Inner Cover Armature Ass y Magnet Brush Block DC Speed Control Switch Hammer Case Washer Anvil B Ring Gear Housing A B Set General Assembly WR 9DM Steel Ball Hammer A Washer Hammer Spring Spindle Idle Gear Set Needle Roller Ball Bearing 6901VV ...

Page 34: ...OOL PARTS LIST LIST NO CORDLESS IMPACT DRIVER Model WH 9DM 2001 10 25 E1 F863 1 2 3 4 5 6 7 8 10 9 20 21 22 23 24 25 26 33 38 39 40 41 35 36 37 35 27 28 29 30 31 32 42 44 43 11 12 13 14 15 16 17 19 18 501 502 34 ...

Page 35: ...LLER 2 20 319 910 RING GEAR 1 21 319 911 WASHER E 1 22 690 1VV BALL BEARING 6901VVCMPS2L 1 23 319 909 DAMPER 2 24 319 908 INNER COVER 1 25 360 564 ARMATURE ASS Y W BALL BEARING DC 9 6V 1 26 319 919 MAGNET 1 27 319 907 DUST GUARD FIN 1 28 319 905 BRUSH BLOCK 1 29 999 054 CARBON BRUSH 5X6X11 5 1 PAIR 2 30 319 918 BRUSH CAP 2 31 302 086 TAPPING SCREW W FLANGE D4X20 BLACK 7 32 NAME PLATE 1 33 320 412 ...

Page 36: ... 996 177 NON MAGNETIC HEX SOCKET 8MM 65L 1 604 985 329 NON MAGNETIC HEX SOCKET 10MM 65L 1 605 996 178 NON MAGNETIC HEX SOCKET 12MM 65L 1 606 996 179 NON MAGNETIC HEX SOCKET 13MM 65L 1 607 996 180 NON MAGNETIC HEX SOCKET 14MM 65L 1 608 996 181 NON MAGNETIC HEX SOCKET 16MM 65L 1 609 996 182 NON MAGNETIC HEX SOCKET 17MM 65L 1 610 996 197 HEX SOCKET LONG 21MMX166L 1 611 996 195 DRILL CHUCK AND ADAPTER...

Page 37: ... 4 ITEM NO CODE NO DESCRIPTION REMARKS NO USED 10 01 WH 9DM Printed in Japan 011025N ...

Page 38: ...TRIC TOOL PARTS LIST LIST NO CORDLESS IMPACT WRENCH Model WR 9DM 2001 10 25 E1 F865 501 502 1 2 5 3 6 7 9 8 15 16 17 18 19 20 21 22 23 24 25 26 30 32 31 28 30 33 34 35 36 37 38 39 27 11 10 13 14 12 501 4 29 ...

Page 39: ...09 DAMPER 2 19 319 908 INNER COVER 1 20 360 564 ARMATURE ASS Y W BALL BEARING DC 9 6V 1 21 319 919 MAGNET 1 22 319 907 DUST GUARD FIN 1 23 320 376 BRUSH BLOCK 1 24 999 054 CARBON BRUSH 5X6X11 5 1 PAIR 2 25 319 918 BRUSH CAP 2 26 302 086 TAPPING SCREW W FLANGE D4X20 BLACK 7 27 NAME PLATE 1 28 320 412 HOUSING A B SET 1 29 CAUTION PLATE 1 FOR USA 30 994 532 MACHINE SCREW W SP WASHER M3X5 2 31 319 906...

Page 40: ...HEX SOCKET ASS Y 18MMX33L 1 INCLUD 607 608 613 996 133 HEX SOCKET ASS Y 19MMX33L 1 INCLUD 607 608 614 996 134 HEX SOCKET ASS Y LONG 8MMX60L 1 INCLUD 602 603 615 996 135 HEX SOCKET ASS Y LONG 10MMX60L 1 INCLUD 602 603 616 996 136 HEX SOCKET ASS Y LONG 12MMX60L 1 INCLUD 602 603 617 996 137 HEX SOCKET ASS Y LONG 13MMX60L 1 INCLUD 607 608 618 996 138 HEX SOCKET ASS Y LONG 14MMX60L 1 INCLUD 607 608 619...

Page 41: ... 4 ITEM NO CODE NO DESCRIPTION REMARKS NO USED 10 01 WR 9DM Printed in Japan 011025N ...

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