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POWER TOOLS

TECHNICAL  DATA

AND

SERVICE  MANUAL

CORDLESS  IMPACT  DRILL

  DV 12DV

SPECIFICATIONS  AND  PARTS  ARE  SUBJECT  TO  CHANGE  FOR  IMPROVEMENT

LIST No. F852

Jul. 2001

D

MODEL

DV 12DV

Summary of Contents for DV 12DV

Page 1: ...POWER TOOLS TECHNICAL DATA AND SERVICE MANUAL CORDLESS IMPACT DRILL DV 12DV SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST No F852 Jul 2001 D MODEL DV 12DV ...

Page 2: ...Notice for use Specifications and parts are subject to change for improvement Refer to Hitachi Power Tool Technical News for further information ...

Page 3: ...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 Symbols Utilized Competitors Company Name Model Name DEWALT DW912K P MAKITA 8412DWA C ...

Page 4: ...RECAUTIONS IN SALES PROMOTION 7 8 1 Safety Instructions 7 8 2 Inherent Drawbacks of Cordless Impact Drills Requiring Particular Attention during Sales Promotion 9 9 REFERENCE MATERIALS 10 9 1 Speed Control Mechanism 10 10 REPAIR GUIDE 11 10 1 Precautions in Disassembly and Reassembly 11 10 2 Precautions in Disassembly and Reassembly of Battery Charger 18 11 STANDARD REPAIR TIME UNIT SCHEDULES 19 A...

Page 5: ...el DV 12DV is more powerful than the Model DV 10DVA and equipped with the T type handle and the 22 step clutch for easier operation as a driver drill 3 APPLICATIONS Drilling into brick and concrete block Drilling into wood metal and plastic Driving and loosening machine screws wood screws and tapping screws 4 SELLING POINTS Single touch two speed selector Choice of three operation modes for flexib...

Page 6: ...very hard materials such as brick and concrete block can be efficiently carried out by aligning the cap impact mark with the triangle mark on the main body See Fig 1 Fig 1 4 1 2 Variable speed switch with brake and electronic feedback mechanism The brake immediately brings the operation to a stop with a simple release of the switch lever making the unit most convenient for continuous screw tighten...

Page 7: ... makes replacement of bits easier Replace the drill or driver bit simply by turning the sleeve with one hand while holding the ring with the other See Fig 2 The lock mechanism is provided to prevent loosening of the chuck during operation Fig 2 Ring Sleeve Tighten Loosen Bit Keyless chuck ...

Page 8: ...arbonate resin green Battery ABS resin black Charger ABS resin black Sealed cylindrical nickel cadmium storage battery DC 12 V Charging discharging approximately 500 times 1 4 Ah 60 minues with standard accessory charger at ambient temperature of 20 C Impact rate No load Kind of battery Nominal battery Nominal life Nominal capacity Charging time Ambient charging temperature Overcharge prevention c...

Page 9: ...ACHI DV 12DV 10 mm 3 8 6 mm 1 4 0 350 0 1 250 24 N m 245 kgf cm 213 in lbs 1 9 kg 4 2 lbs 18 mm 23 32 10 mm 3 8 5 1 mm dia x 32 mm length 11 x 1 1 4 0 5 250 0 18 750 Keyless 10 mm 3 8 1 4 Ah 12 V 60 minutes Equipped Equipped 232 mm 9 9 64 255 mm 10 3 64 HITACHI DV 10DVA 10 mm 3 8 6 mm 1 4 0 350 0 1 100 14 N m 143 kgf cm 124 in lbs 1 9 kg 4 2 lbs 18 mm 23 32 10 mm 3 8 5 1 mm dia x 32 mm length 11 x...

Page 10: ...n mode Drill mode Max clutch position DV 12DV HITACHI DV 10DVA P C 40 43 68 48 DV 10DVA DV 12DV HITACHI DV 12DV HITACHI DV 10DVA DV 12DV HITACHI DV 10DVA DV 12DV HITACHI DV 10DVA 60 65 90 65 60 45 140 98 185 130 125 135 148 185 130 245 170 180 170 180 7 7 7 7 3 8 2 7 2 615 2 445 480 2 545 380 2 440 305 Drill mode P C P C P C P C The above table shows an example of test data obtained by using the b...

Page 11: ...ther power source DC outlet fuel powered generator etc will cause the charger to overheat and burn out 4 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 5 Conduct battery charging at an ambient temperature range of 10 C 40 C 50 F 104 F Spe...

Page 12: ...ower tool sales outlet or the authorized service center when they are no longer capable of being recharged or repaired If thrown into a fire the battery 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 cautions are listed on the Name Plate attached to the main body of each tool B...

Page 13: ...ame of this unit is provided with a vent hole for greater cooling efficiency Since the motor has a built in cooling fan a foreign substance inserted into the vent hole is likely to cause mechanical failure Alert your customer to never cover or block the vent hole 4 Use a drive force of 100 to 150 N 10 15 kgf 22 33 lbs It would not accelerate the drilling speed of this unit to apply a strong drive ...

Page 14: ...od or if the tool has just been operated for a long time charging may not be possible if the temperature of a battery type FEB 12S is above 40 C 104 C In such a case the customer should be advised to place the battery in a shaded area with a good airflow and allows sufficient cooling before recharging This phenomenon is common to all existing batteries and chargers which employ temperature sensiti...

Page 15: ...emove it Take care that it is left hand threaded b Fix the hexagonal bar wrench M10 into the Drill Chuck 10VLR N W O Chuck Wrench 2 as indicated in Fig 4 Next apply the Wrench 14 mm special repair tool Code No 873929 601 to the flat surfaces on the spindle to hold it steady and remove it by turning counterclockwise If it is difficult to loosen use a pipe extension or similar tool 2 Removal of Hous...

Page 16: ... the Switch Plate 8 then remove the Switch Plate 8 from the Front Case 12 See Fig 5 7 Removal of the O ring 6 Pull out the Lock Washer 7 from the Cap 4 and remove the O ring 6 See Fig 6 8 Disassembly of the power supply unit Note Do not remove the fin secured to the DC speed Control Switch 39 with a screw Remove the two Machine Screws W SP Washers M4 x 6 35 and take the Motor 31 and the Motor Spac...

Page 17: ... Red 38 as shown in Fig 7 Fig 8 Motor Spacer 30 Motor 31 Internal Wire Red 38 Machine Screw W SP Washer M4 x 6 35 Internal Wire Red 38 Internal Wire Black 37 Internal Wire Black 37 Ferrite Core 41 DC speed Control Switch 39 Terminal Support A 44 Inernal Wire Black 37 Motor 31 side Wind 1 turn Internal Wire Red 38 DC speed Control Switch 39 side Ferrite Core 41 Fig 7 b Be sure to perform wiring con...

Page 18: ...Switch Plate 8 aligning with the projections of the Front Case 12 as shown in Fig 5 3 Reassembly of the gear unit a Apply grease Hitachi Motor Grease No 29 Code No 930035 to the meshing parts of the gear b Install the parts series from the six Rollers 13 to Washer B 29 into the assembly reassembled in step 2 See Fig 10 Fig 10 12 13 14 15 16 17 18 26 27 25 20 21 23 9 11 10 28 29 24 Groove 8 19 i No...

Page 19: ... 20 are positioned as shown in Fig 12 Set the narrow slit of switch flange as shown in Fig 12 and mount the Cap 4 aligning the ridge of the Click Spring 5 with the three projections of the Nut 9 Recess Projection 29 Projection Fig 12 Click Spring 5 Marking of the Rear Case 20 Holes Ridge Three projections of Nut 9 Cap 4 Wide slit of switch flange Lock Washer 7 Switch flange Narrow slit of switch f...

Page 20: ...it with the Special Screw Left Hand M6 x 23 1 f Install the Shift Knob 42 into the assembly reassembled in step e When installing the Shift Knob 42 into the Shift Arm 22 note that the LOW mark on the Shift Knob 42 faces the Motor 31 with the Shift Arm 22 engaged with the recess in the Shift Knob 42 g Install the assembly reassembled in step 1 and the assembly reassembled in step f together See Fig...

Page 21: ...ap 4 turns loosely correctly reinstall the Click Spring 5 as it is improperly installed If the number 1 on the Cap 4 or the impact mark cannot reach the triangle mark on Housing A B Set 36 correctly reinstall the Cap 4 referring to step 3 c as it is improperly installed 5 Other precautions in reassembly a When the assembly procedure is completed make sure that the turning direction of the Drill Ch...

Page 22: ...s Screw Set M3 x 12 4 pcs 21 0 6 1 0 N m 6 10 kgf cm 5 2 8 7 in lbs Machine Screw W SP Washer M4 x 6 35 1 1 1 9 N m 11 19 kgf cm 9 5 16 5 in lbs Tapping Screw W Flange D3 x 16 32 1 1 1 9 N m 11 19 kgf cm 9 5 16 5 in lbs 10 2 Precautions in Disassembly and Reassembly of Battery Charger Please refer to the Technical Data and Service Manual for precautions in disassembly and reassembly of the Battery...

Page 23: ...DV Work Flow Housing A B Set Motor Cap DC speed Control Switch O ring Nut Shift Arm 60 50 Gear Box Ass y Front Case Ring Gear Carrier First Ring Gear Planet Gear A Set Pinion B Planet Gear B Set Pinion C Slide Ring Gear Planet Gear C Set Rear Case Spring Drill Chuck General Assembly ...

Page 24: ...ELECTRIC TOOL PARTS LIST LIST NO CORDLESS IMPACT DRILL Model DV 12DV 2001 5 10 E1 F852 ...

Page 25: ...SET 3 PCS 3 26 319 751 PINION B 1 27 319 767 PLANET GEAR A SET 3 PCS 3 28 319 752 FIRST RING GEAR 1 29 312 716 WASHER B 1 30 316 955 MOTOR SPACER 1 31 319 966 MOTOR 1 32 313 687 TAPPING SCREW W FLANGE D3X16 BLACK 7 33 NAME PLATE 1 34 318 237 BIT HOLDER 1 35 317 333 MACHINE SCREW W SP WASHER M4X6 2 36 319 965 HOUSING A B SET 1 37 319 759 INTERNAL WIRE BLACK 100L 1 37 320 133 INTERNAL WIRE BLACK 195...

Page 26: ... NO CODE NO DESCRIPTION REMARKS NO USED ITEM NO CODE NO DESCRIPTION REMARKS NO USED DV 12DV 501 CHARGER MODEL UC 12SD 1 502 318 236 DRIVER BIT NO 2 55L 1 503 319 964 HOOK 1 504 319 967 CASE 1 505 BIT SET 1 506 TORCHLIGHT MODEL UB 12D 1 601 873 929 WRENCH 14MM 1 5 01 ...

Page 27: ... ALTERNATIVE PARTS ITEM NO CODE NO DESCRIPTION REMARKS NO USED Printed in Japan 010510N 5 01 DV 12DV ...

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