Hitachi DS 12DM Technical Data And Service Manual Download Page 25 | Manualshive

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11. STANDARD REPAIR TIME (UNIT) SCHEDULES

MODEL

10

20

30

40

Fixed

Variable

DS 12DM

Work Flow

Armature

Magnet

Brush Block

DC-Speed

Control Switch

Shift Knob

60

50

Drill Chuck

General Assembly

Hook Ass'y

Gear Box

Ass'y

Clutch Dial

Nut

Spring

Front Case

Click Spring

Lock Ring

Ring Gear

Carrier

Planet Gear

(C) Set

Rear Case

Shift Arm

Slide Ring

Gear

Pinion (C)

Planet Gear

(B) Set

Pinion (B)

Planet Gear

(A) Set

First Ring

Gear

Housing

(A).(B) Set

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Summary of Contents for DS 12DM

Page 1: ...TECHNICAL DATA AND SERVICE MANUAL CORDLESS DRIVER DRILL DS 12DM SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT LIST No F894 Nov 2003 D MODEL DS 12DM Hitachi Power Tools ...

Page 2: ...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 BOSCH GSR12VE 2 B MAKITA 6317D C ...

Page 3: ... 8 PRECAUTIONS IN SALES PROMOTION 8 8 1 Safety Instructions 8 8 2 Inherent Drawbacks of Cordless Driver Drills Requiring Particular Attention During Sales Promotion 10 9 REFERENCE MATERIALS 12 9 1 Feedback System 12 10 REPAIR GUIDE 13 10 1 Precautions in Disassembly and Reassembly 13 10 2 Precautions in Disassembly and Reassembly of Battery Charger 21 11 STANDARD REPAIR TIME UNIT SCHEDULES 22 Asse...

Page 4: ...s compact and lightweight 203 mm in entire length 1 7 kg in weight and 36 N m 367 kgf cm of maximum torque Easier to operate Slip resistant clutch dial It is soft and easy to turn thanks to the elastomer resin Comfortably shaped handle It is soft and slip resistant thanks to the elastomer resin Slim handle One touch hook Ready for use at anytime angle adjustable in 5 steps Mountable on either side...

Page 5: ...at is the same as a driver drill with a power cord To improve the overload durability in continuous operation the optimally designed cooling air path that is descended from the Model WH 12DM increases the cooling efficiency as well as the large radial fan increases the volume of air see Fig 1 Fig 1 Curves of motor temperature rise L Entire length mm H Entire height mm W Entire width mm Weight kg M...

Page 6: ...crew completely maximum manual tightening torque 22 5 N m 230 kgf cm 4 1 5 Keyless chuck is operable with one hand and equipped with locking mechanism The sleeve can be turned with one hand The driver bits can be easily replaced by holding the main unit with one hand while turning the sleeve with the other hand The Model DS 12DM is also equipped with the locking mechanism to prevent the sleeve fro...

Page 7: ...e carbon brushes and separate type motor The carbon brushes are replaceable from the outside In addition the armature is singly replaceable thanks to the adoption of the separate type motor that is the same as a driver drill with a power cord Thus the Model DS 12DM is easier to maintain 4 1 9 Flat battery The battery is flat enough to stand the Model DS 12DM upright stably The conventional Hitachi...

Page 8: ...oltage DC 12 V Nominal life Charging discharging approximately 1 000 times Nominal Capacity 2 0 Ah Sealed cylindrical nickel metal hydride battery Nominal voltage DC 12 V Nominal life Charging discharging approximately 500 times Nominal Capacity 3 0 Ah Overcharge protection system 1 Battery voltage detection 2 V system 2 Battery surface temperature detection thermostat or thermistor 3 120 minute t...

Page 9: ...2 25 4 mm 1 13 mm 1 2 13 mm 1 2 32 mm 1 1 4 Machine screw Wood screw 6 mm 1 4 dia 8 dia x 38 20 x 1 1 2 6 mm 1 4 dia 6 8 dia x 50 16 x 2 Not indicated Not indicated 8 dia x 20 x 6 dia x 75 1 4 x 3 2 0 to 10 N m 20 to 102 kgf cm 17 7 to 89 in lbs 15 positions Not indicated Equipped Equipped Equipped Equipped Locking device Drill chuck Single sleeve Single sleeve Double sleeve Single sleeve Type 13 ...

Page 10: ...RMANCE PER SINGLE CHARGE Drilling and fastening performance comparison per charge Remarks Number of machine screws fastened per charge Remarks 1 Number of holes or fasteners per charge The above table shows an example of test data The batteries used in this test data are as follows Models DS 12DM and DS 12DVB 3 0 Ah C 2 6 Ah B 2 4 Ah Figures in parentheses indicate the values for a 2 0 Ah battery ...

Page 11: ...ny voltage increasing equipment transformer etc between the power source and the charger If the charger is used with voltage higher than that indicated on the unit it will not function properly 4 Conduct battery charging at an ambient temperature range of 0 C 40 C 32 F 104 F Special temperature sensitive devices are employed in the charger to permit rapid charging Ensure that customers are instruc...

Page 12: ... 8 Disposal of the Type EB 1220BL or EB 1230HL storage battery Ensure that all customers understand that Type EB 1220BL or EB 1230HL storage battery should be returned to the Hitachi power tool sales outlet or the authorized service center when it is no longer capable of being recharged or repaired If thrown into a fire the battery may explode or if discarded indiscriminately leakage of the cadmiu...

Page 13: ... Avoid Locking of the motor Locking of the motor will cause an overload current that could result in burning of the motor and or rapid deterioration of the battery Salespersons should advise the customer to immediately release the switch and stop operation if the motor becomes locked A jammed drill bit can be disengaged from the workpiece material by setting the switch to reverse rotation or by ma...

Page 14: ... customers to avoid continuous use of the Model DS 12DM and take a pause about 15 minutes after a single charge operation as a guide B Suggestions and precautions for the efficient use of the charger and storage batteries If any of the storage batteries Types EB 1220BL and EB 1230HL is exposed to direct sunlight for an extended period or if the temperature of the battery is high immediately after ...

Page 15: ... the maximum torque does not decrease under about 65 of that at a full speed curve B to ensure a sufficiently large torque at a low speed Besides the braking function allows the driver unit to stop rotation immediately when the trigger switch is released Torque Rotation speed which is a convenient feature for continuous screw tightening or drilling works The step less variable speed mechanism cont...

Page 16: ...d b with the main unit mounted in the vise for removal of the Drill Chuck 2 At this time it is recommended to sandwich a cloth between the main unit and the vise to prevent the Housing A B Set 38 from being scratched a Fully open the jaws of the Drill Chuck 2 and remove the Special Screw Left Hand M6 x 23 1 by turning clockwise be careful that it is a left handed screw b Hold the hexagonal portion...

Page 17: ...acer 28 and press down the tip of the armature shaft of the Armature 29 with a hand press 8 Disassembly of the gear unit a Disassembly of the deceleration mechanism Turn Plate A 27 mounted in the Rear Case 18 counterclockwise to remove Take out the First Ring Gear 26 Planet Gear A Set 4 pcs 25 Pinion B 24 Planet Gear B Set 4 pcs 23 Pinion C 22 and Slide Ring Gear 21 in order Then remove the Screw ...

Page 18: ...ternal wires and the terminals Note Be careful in handling the FET and the internal wires of the DC Speed Control Switch 41 as they are apt to be broken at their roots Fig 2 2 pcs 32 Internal wire red 6 Internal wire black Protrusion Notch 40 41 46 40 Internal wire FET Fig 3 7 8 2 Reassembly of the clutch mechanism Mount the Thrust Plate 7 and the Spring 6 to the Front Case 8 in order see Fig 3 At...

Page 19: ... grease to the Lock Ring 12 and Needle Roller C Set 14 Application of grease renders the manual tightening mechanism inoperative 8 5 Fig 5 14 12 8 5 Y surface Y surface Z surface 8 Concave portion Protrusion Stepped portion Screw in end position Mark ii Mark 6 pcs 4 Reassembly of the deceleration mechanism a Apply grease Hitachi Motor grease No 29 to the engaging portions of each gear needle rolle...

Page 20: ...of the armature unit a Mounting the Motor Spacer 28 Mount the Motor Spacer 28 to the Armature 29 If it is too hard to mount support the Motor Spacer 28 and press down the rear end of the armature shaft of the Armature 29 with a hand press b Mounting the Magnet 30 Mount the Magnet 30 to the Armature 29 so that the notch of the Magnet 30 faces the rear of the Armature 29 Hold each part securely as t...

Page 21: ...e of the Slide Ring Gear 21 that is mounted in the Rear Case 18 see Fig 6 Insert the Shift Arm 20 into the groove of the Shift Knob 39 facing LOW indication on the Shift Knob 39 backward Notch Protrusion Fig 10 Fig 9 31 30 6 Reassembly of the drive unit a Fit the protrusion of the Motor Spacer 28 in the concave portion of the Rear Case 18 engaging the pinion of the Armature 29 with Planet Gear A S...

Page 22: ...tion of the Clutch Dial 4 is at the position where indicated with 1 viewing from the outside Check that the protrusion of the Click Spring 9 is inserted into the groove inside the Clutch Dial 4 2 Wider protrusion Protrusion Protrusion Concave portion Concave portion Indicated with 1 Groove Wider concave portion A B 7 Reassembly of the main unit a Mount the power supply unit and the drive unit that...

Page 23: ... mark on Housing A B Set 38 respectively and the Clutch Dial 4 turns moderately If the number 1 or the drill mark on the Clutch Dial 4 cannot reach the triangle mark on Housing A B Set 38 correctly reinstall the Clutch Dial 4 referring to step 2 or 6 c as it is improperly mounted Verify proper operation of the Shift Knob 39 Check that the speed changes between high and low properly by shifting the...

Page 24: ...kwise as viewed from behind Check that the runout of the Drill Chuck 2 is 0 8 mm or less at the position 110 mm away from the tip of the chuck using a 12 mm dia test bar 12 Screw tightening torque Special Screw Left Hand M6 x 23 1 3 92 4 9 N m 40 50 kgf cm Drill Chuck 2 17 6 21 6 N m 180 220 kgf cm Screw Set D3 x 12 19 0 62 0 94 N m 6 10 kgf cm Brush Cap 34 0 68 0 88 N m 7 9 kgf cm Tapping Screw W...

Page 25: ... Block DC Speed Control Switch Shift Knob 60 50 Drill Chuck General Assembly Hook Ass y Gear Box Ass y Clutch Dial Nut Spring Front Case Click Spring Lock Ring Ring Gear Carrier Planet Gear C Set Rear Case Shift Arm Slide Ring Gear Pinion C Planet Gear B Set Pinion B Planet Gear A Set First Ring Gear Housing A B Set ...

Page 26: ...O F894 CORDLESS DRIVER DRILL Model DS 12DM 2003 11 25 E1 Hitachi Power Tools 31 32 33 34 35 36 38 37 39 40 41 42 40 43 44 45 40 46 47 48 49 30 29 28 27 24 25 26 18 19 20 22 23 21 17 16 15 14 13 12 11 10 2 5 4 1 9 8 7 6 3 501 502 503 ...

Page 27: ...ING GEAR 1 22 320 764 PINION C 1 23 320 781 PLANET GEAR B SET 4 PCS 4 24 320 766 PINION B 1 25 320 780 PLANET GEAR A SET 4 PCS 4 26 320 767 FIRST RING GEAR 1 27 320 768 PLATE A 1 28 320 769 MOTOR SPACER 1 29 360 627 ARMATURE DC12V 1 30 322 520 MAGNET 1 31 322 521 DUST GUARD 1 32 320 774 BRUSH BLOCK 1 33 999 054 CARBON BRUSH 5X6X11 5 1 PAIR 2 34 319 918 BRUSH CAP 2 35 313 687 TAPPING SCREW W FLANGE...

Page 28: ... ALTERNATIVE PARTS 3 ITEM NO CODE NO DESCRIPTION REMARKS NO USED 11 03 DS 12DM STANDARD ACCESSORIES 501 CHARGER MODEL UC 14YFA 1 502 321 916 CASE 1 503 983 006 DRIVER BIT NO 2 65L 1 ...

Page 29: ... 4 ITEM NO CODE NO DESCRIPTION REMARKS NO USED 11 03 DS 12DM Printed in Japan 031125N ...

Page 30: ......

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