Hitachi WH 12DAF2 Technical Data And Service Manual Download Page 1

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TECHNICAL DATA

AND

SERVICE MANUAL

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

LIST Nos. WH 12DAF2: G836

WR 12DAF2: G837

August 2005

MODELS

WH 12DAF2
WR 12DAF2

Hitachi

Power Tools

CORDLESS IMPACT DRIVER

WH 12DAF2

CORDLESS IMPACT WRENCH

WR 12DAF2

WH 12DAF2

WR 12DAF2

Summary of Contents for WH 12DAF2

Page 1: ...ICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST Nos WH 12DAF2 G836 WR 12DAF2 G837 August 2005 W MODELS WH 12DAF2 WR 12DAF2 Hitachi Power Tools CORDLESS IMPACT DRIVER WH 12DAF2 CORDLESS IMPACT WRENCH WR 12DAF2 WH 12DAF2 WR 12DAF2 ...

Page 2: ...re 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 WH 12DAF2 Symbol Utilized Competitor Company Name Model Name WR 12DAF2 P1 DeWALT DW053 P DeWALT DW052 ...

Page 3: ...riven 15 8 PRECAUTIONS IN SALES PROMOTION 16 8 1 Safety Instructions 16 8 2 Tightening Torque Inspection Prior to Operation 18 8 3 Tightening Torque Variation 18 8 4 Suggestions and Precautions for the Efficient Use of the Charger 20 9 OTHER PRECAUTIONS 20 10 REPAIR GUIDE 21 10 1 Precautions in Disassembly and Reassembly 21 10 2 Precautions in Disassembly and Reassembly of Battery Charger 27 11 ST...

Page 4: ... 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...

Page 5: ... Variable speed reversible switch with electric brake Durable die casting aluminum hammer case Powerful new design Convenient belt hook with LED job light Bit holder Fast tightening speed 30 faster than the Model WH 12DAF Max torque 110 N m 975 in lbs WH 12DAF 88 N m 780 in lbs ...

Page 6: ... 12DAF2 Soft grip handle Variable speed reversible switch with electric brake Durable die casting aluminum hammer case Powerful new design Convenient belt hook with LED job light Max torque 130 N m 1150 in lbs WR 12DAF 110 N m 975 in lbs ...

Page 7: ...lighting direction is diagonal to minimize shadowing over the tool tip and the operator s hand holding a screw The light will turn off automatically after 15 minutes if forgotten Selling points of the Model WH 12DAF2 1 Fast tightening speed thanks to the powerful tightening torque 30 faster than the conventional model when tightening a universal machine screw of 5 3 mm diameter and 120 mm length T...

Page 8: ...s N m 400 347 in lbs 800 694 in lbs 1200 1042 in lbs 1600 1389 in lbs 200 174 in lbs 1000 868 in lbs 600 521 in lbs 1400 1215 in lbs 2 Max torque 110 N m 975 in lbs The maximum torque is 110 N m 975 in lbs thanks to the optimum striking design while maintaining high mechanical strength with the durable die casting aluminum hammer case etc Tightening torque comparison Figure 2 shows the torque requ...

Page 9: ... EB 1220BL Sealed cylindrical nickel cadmium battery Nominal voltage DC 12 V Nominal life Charging discharging approximately 300 cycles in the case of the Model UC 14YFA or UC 18YG Nominal capacity 1 4 Ah 2 0 Ah Weight Housing Battery Type EB 1226HL Sealed cylindrical nickel metal hydride batteries Nominal voltage DC 12 V Nominal life Charging discharging approximately 500 cycles in the case of th...

Page 10: ...nt the battery from overcharge Output capacity 70 W Indication method Pilot lamp indicator of battery charging Function On During charging Off Charging completed Charger Model UC 18YG NOTE The Model UC 18YG charger is exclusive to NiCad batteries Prior to charging During charging Charging completed Charging not possible High battery temperature Blinks Lit Blinks Flickers Lit 0 5 sec ON 0 5 sec OFF...

Page 11: ...5 2 9 16 16 10 mm Hexagon socket 996182 17 21 32 65 2 9 16 17 10 mm Hexagon socket 996197 21 53 64 166 6 17 32 21 1 2 Hexagon long socket Woodworking drill bit Code No 959183 14 mm dia 35 64 83 mm 3 17 64 992689 7 1 4 65 2 9 16 7 4 mm Hexagon socket Drill chuck adaptor set Code No 321823 The drill chuck adaptor set permits mounting of various types of locally available drill bits for a variety of ...

Page 12: ...0 1 9 16 40 1 9 16 40 1 9 16 32 1 1 4 34 1 11 32 36 1 13 32 40 1 9 16 B B B B C C D D W 5 16 W 3 8 W 7 16 W 1 2 M 12 15 32 944291 873632 873539 873540 873536 873624 873626 873627 Hexagon socket 12 7 mm 1 2 Square drive dimension Sq Part name Code No Nominal diameter of applicable bolts Dihedral width H mm Shape Socket primary dimensions mm L L1 8 5 16 8 5 16 9 11 32 9 11 32 8 5 16 9 11 32 10 3 8 1...

Page 13: ... primary dimensions mm L L1 20 25 32 20 25 32 20 25 32 24 15 16 24 15 16 24 15 16 24 15 16 24 15 16 24 15 16 24 15 16 24 15 16 D1 20 25 32 21 5 53 64 22 7 8 25 1 25 1 28 1 3 32 28 1 3 32 31 1 7 32 31 1 7 32 31 1 7 32 32 5 1 9 32 L2 ISO Ordinary ISO Small type Inch screw ISO High strength M 8 5 16 M 10 3 8 M 10 3 8 M 12 15 32 M 12 15 32 M 14 9 16 M 8 5 16 M 10 3 8 M 12 15 32 M 12 15 32 M 14 9 16 M ...

Page 14: ...ric brake Equipped Charging time EB 1214S Approx 30 min 1 1 In the case of tapping screws and wood screws a minimum of M3 is possible 2 Max tightening torque is based on tightening an M12 15 32 bolt strength grade 12 9 for 3 sec with a hexagon socket 3 Main body weight does not include accessory tools hexagon bit etc 4 This type of battery could not be charged by the Model UC 18YG 5 This type of b...

Page 15: ...ghtening torque is based on tightening an M12 15 32 bolt strength grade 12 9 for 3 sec with a hexagon socket 2 Main body weight does not include accessory tools hexagon socket etc 3 This type of battery could not be charged by the Model UC 18YG 4 This type of battery could not be charged by the Model UC 12SD M6 M14 1 4 9 16 M6 M10 1 4 3 8 110 975 in lbs 1020 kgf cm 0 2 200 0 2 900 181 7 1 8 Equipp...

Page 16: ...r 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 cm2 x 0 8 x effective sectional area of the thread mm2 K Torque coeffi...

Page 17: ...4 M12 x 45 Tightening time sec Steel plate thickness t 63 64 25 mm 200 174 400 347 600 521 800 694 1000 868 1200 1042 kgf cm in lbs Tightening torque 0 0 1 2 3 20 40 60 80 120 100 0 N m Ordinary bolt High tension bolt 5 16 x 1 3 6 M8 x 30 Tightening time sec Steel plate thickness t 3 8 10 mm 200 174 400 347 600 521 800 694 1000 868 kgf cm in lbs Tightening torque 0 0 1 2 3 20 40 60 80 100 0 N m Or...

Page 18: ...hich can be tightened per charge will vary slightly depending on screw tightening conditions screw sizes ambient temperatures and the charging capacity of the battery 1 Number of screws or bolts driven Battery Nominal capacity Tightening condition Model HITACHI WH 12DAF EB 1214L 1 4 Ah Wood screw 4 0 mm dia x 50 mm soft wood 230 Wood screw 4 2 mm dia x 75 mm hard wood 135 Wood screw 4 5 mm dia x 9...

Page 19: ...is 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 charger is used wit...

Page 20: ...eing 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 Asia and Oceania Warning To reduce the risk of injury user must rea...

Page 21: ...tening torque is obtained by measuring the torque with an appropriate torque 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 7 2 1 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...

Page 22: ...tures 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 ...

Page 23: ...depending on the load duration of use and ambient temperature 9 OTHER PRECAUTIONS 1 Check for cracks or other damage on the socket Cracks or any other faults on the socket are very hazardous In 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 With...

Page 24: ... 32 Remove the Special Screw M5 44 40 with a flatblade screwdriver or a coin then remove the Hook Ass y W Light 36 32 and the Hook Spring 43 39 3 Removal of housing B Remove the seven Tapping Screws W Flange D4 x 20 Black 29 26 from the main body to remove housing B 4 Remove the DC Speed Control Switch 32 30 the Fin 42 38 and the Motor 26 23 together Remove the Pushing Button 33 31 and the Strap B...

Page 25: ...ee The Guide Sleeve 5 can now be removed Avoid quickly raising the retaining ring or it may fly out forcefully The retaining ring can also be easily removed by widening the gap of the retaining ring with the jig for retaining ring and slowly raising the retaining ring with a small flat blade screwdriver 7 Disassembly of the hammer assembly Hammer 11 8 Push down Spindle B 17 14 Hammer Spring 14 11 ...

Page 26: ...am Fig 10 for proper wiring b Pay attention to the polarity of the Motor 26 23 when soldering the Internal Wire Red 115L 27 24 and Internal Wire Black 60L 28 25 to the Motor 26 23 The red marked side of the Motor 26 23 is positive c When mounting the Motor 26 23 into housing A pay attention to the position of the Internal Wire Red 115L 27 24 and the depression for preventing motor body from rotati...

Page 27: ...ternal Wire Red 115L 27 24 Red marking Indicate positive side Internal Wire Red 115L 27 24 Motor 26 23 Fin 42 38 Internal Wire Black 60L 28 25 Projection of the forwarding reversing lever FET Machine Screw W Sp Washer M3 x 4 41 37 Fig 10 DC Speed Control Switch 32 30 ...

Page 28: ...d Mount the hammer assembly onto the J 297 base for washer S With a hand press push down the top of Spindle B 17 14 to compress the Hammer Spring 14 11 On this condition mount the Stopper 16 13 onto the spindle shaft and then release the hand press e Mount the Ring Gear 20 17 Washer E 21 18 Ball Bearing 6901VVCMPS2L 22 19 Inner Cover 23 20 Damper 24 21 and the Retaining Ring 25 22 to the above rea...

Page 29: ...he housing 7 Check whether the direction of rotation of the Anvil 9 6 coincides with the directional markings on the push on side of the Pushing Button 33 31 When the Pushing Button 33 31 is turned to the R side the direction of rotation of the Anvil 9 6 should be clockwise as viewed from behind 8 Lubrication a ATTOLUB MS No 2 Cam groove and sliding section of Spindle B 17 14 Cam groove and projec...

Page 30: ...kgf cm 17 4 4 3 in lbs Machine Screw W Sp Washer M3 x 4 41 37 0 29 0 39 N m 3 4 kgf cm 2 6 3 5 in lbs Special Screw M5 44 40 1 96 0 49 N m 20 5 kgf cm 17 4 4 3 in lbs 10 2 Precautions 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 or UC 18YG Battery Charger ...

Page 31: ... 50 60 min Fixed Variable WH 12DAF2 Work Flow Inner Cover Damper Motor Hook Ass y Hammer Case Anvil Ring Gear Housing A B Set General Assembly Hammer Steel Ball Hammer Spring Spindle Idle Gear Set Needle Roller Ball Bearing 6901VV Gear Box Ass y Guide Sleeve DC Speed Control Switch ...

Page 32: ...e WR 12DAF2 Work Flow Inner Cover Damper Motor Hook Ass y Hammer Case Pin Retainer Plunger Anvil Ring Gear Housing A B Set General Assembly Hammer Steel Ball Hammer Spring Spindle Idle Gear Set Needle Roller Ball Bearing 6901VV Gear Box Ass y DC Speed Control Switch ...

Page 33: ...LIST NO G836 CORDLESS IMPACT DRIVER Model WH 12DAF2 2005 8 10 E1 Hitachi Power Tools 503 504 505 506 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 41 42 43 44 45 40 ...

Page 34: ...1 21 319 911 WASHER E 1 22 690 1VV BALL BEARING 6901VVCMPS2L 1 23 323 947 INNER COVER 1 24 321 894 DAMPER 1 25 321 893 RETAINING RING 1 26 323 948 MOTOR 1 27 321 876 INTERNAL WIRE RED 115L 1 28 321 877 INTERNAL WIRE BLACK 60L 1 29 302 086 TAPPING SCREW W FLANGE D4X20 BLACK 7 30 NAME PLATE 1 31 324 855 HOUSING A B SET 1 32 321 917 DC SPEED CONTROL SWITCH 1 33 321 871 PUSHING BUTTON 1 34 HITACHI LAB...

Page 35: ...992 671 DRIVER BIT B NO 2 50L 1 602 992 672 DRIVER BIT B NO 3 50L 1 603 992 689 NON MAGNETIC HEX SOCKET 7MM 65L 1 604 996 177 NON MAGNETIC HEX SOCKET 8MM 65L 1 605 985 329 NON MAGNETIC HEX SOCKET 10MM 65L 1 606 996 178 NON MAGNETIC HEX SOCKET 12MM 65L 1 607 996 179 NON MAGNETIC HEX SOCKET 13MM 65L 1 608 996 180 NON MAGNETIC HEX SOCKET 14MM 65L 1 609 996 181 NON MAGNETIC HEX SOCKET 16MM 65L 1 610 9...

Page 36: ... 4 ITEM NO CODE NO DESCRIPTION REMARKS NO USED 8 05 WH 12DAF2 Printed in Japan 050810N ...

Page 37: ...IST LIST NO G837 CORDLESS IMPACT WRENCH Model WR 12DAF2 2005 8 30 E1 Hitachi Power Tools 1 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 30 31 29 32 33 34 35 37 38 39 40 36 7 2 3 4 5 6 501 502 503 504 501 41 ...

Page 38: ...901VVCMPS2L 1 20 323 947 INNER COVER 1 21 321 894 DAMPER 1 22 321 893 RETAINING RING 1 23 323 948 MOTOR 1 24 321 876 INTERNAL WIRE RED 115L 1 25 321 877 INTERNAL WIRE BLACK 60L 1 26 302 086 TAPPING SCREW W FLANGE D4X20 BLACK 7 27 NAME PLATE 1 28 324 855 HOUSING A B SET 1 29 HITACHI LABEL 1 30 321 917 DC SPEED CONTROL SWITCH 1 31 321 871 PUSHING BUTTON 1 32 321 918 HOOK ASS Y W LIGHT 1 INCLUD 33 34...

Page 39: ...308 SLEEVE 1 613 955 309 WASHER 1 614 955 310 SOCKET COVER 1 615 955 311 SOCKET 1 616 303 247 SEAL LOCK HEX SOCKET HD BOLT M5X25 6 617 873 537 SOCKET PIN 1 618 873 187 O RING J1SW1516 1 619 991 481 FORM TIE SOCKET ASS Y 11 3MMX95L 1 INCLUD 617 618 620 992 610 UNIVERSAL JOINT ASS Y 1 INCLUD 617 618 621 955 153 UNIVERSAL JOINT PIN 1 622 991 476 BIT ADAPTER ASS Y 1 INCLUD 617 618 623 944 291 HEX SOCK...

Page 40: ...1 INCLUD 617 618 639 955 151 HEX SOCKET ASS Y LONG 21MMX75L 1 INCLUD 617 618 640 991 480 HEX SOCKET ASS Y LONG 21MMX125L 1 INCLUD 617 618 641 955 144 HEX SOCKET ASS Y LONG 22MMX52L 1 INCLUD 617 618 642 986 058 HEX SOCKET FOR PLASTIC CONE 12MMX70L 1 INCLUD 617 618 643 873 633 EXTENSION BAR ASS Y SQUARE 12 7MMX100L 1 INCLUD 617 618 644 993 658 SOCKET ASS Y FOR DUCT 12MMX95L 1 INCLUD 617 618 645 993 ...

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