Hitachi DV 12DV Technical Data And Service Manual
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Hitachi DV 12DV Technical Data And Service Manual

Hitachi DV 12DV Technical Data And Service Manual

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

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Summary of Contents for Hitachi DV 12DV

  • Page 1 MODEL DV 12DV POWER TOOLS TECHNICAL DATA CORDLESS IMPACT DRILL SERVICE MANUAL DV 12DV LIST No. F852 Jul. 2001 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT...
  • 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 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: Competitors Symbols Utilized Company Name Model Name DW912K DEWALT MAKITA 8412DWA...

  • Page 4: Table Of Contents

    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 Assembly Diagram for DV 12DV...

  • Page 5: Product Name

    The Model DV 12DV cordless impact drill has been newly developed as an upgraded version of the current Model DV 10DVA. The Model 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.

  • Page 6: Selling Point Descriptions

    4-1. Selling Point Descriptions 4-1-1. Choice of three operation modes for flexibility This Model can be easily switched between three modes, screwdriving, drilling and impact drilling, simply by turning the cap dial. To use it as a screwdriver, set the cap to any position between 1 and 22, depending on the types of screws and the material to be fastened.
  • Page 7 4-1-3. 10 mm keyless chuck with positive lock mechanism The handle-free keyless chuck 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.

  • Page 8: Specifications

    • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Main body and standard accessories DV 12DV (SSX) 5.7 kg (12.6 Ibs.)

  • Page 9: Comparisons With Similar Products

    6. COMPARISONS WITH SIMILAR PRODUCTS Maker HITACHI HITACHI Model DV 12DV DV 10DVA Brick 10 mm (3/8") 10 mm (3/8") 10 mm (3/8") 10 mm (3/8") Mild steel 10 mm (3/8") 10 mm (3/8") 13 mm (1/2") Drilling 10 mm (3/8") Soft wood 18 mm (23/32")

  • Page 10: Working Performance Per Single Charge

    7. WORKING PERFORMANCE PER SINGLE CHARGE Working capacity (*1) Working Task description Maker Model time (sec./pc.) DV 12DV 30 mm (1-3/16") Brick HITACHI 40 (43) DV 10DVA 68 (48) Drill bit for brick 10.8 (26) Vibration mode <High speed> T1.6 (1/16")

  • Page 11: Precautions In Sales Promotion

    8-1. Safety Instructions In the interest of promoting the safest and most efficient use of the Model DV 12DV Cordless Impact Drill by all of our customers, it is very important that at the time of sale, the salesperson carefully ensures that the buyer seriously 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.
  • Page 12 (9) Disposal of the Type FEB 12S Storage Battery Ensure that all customers understand that Type FEB 12S Storage Battery should be returned to the Hitachi power tool sales outlet or the authorized service center when they are no longer capable of being recharged or repaired.

  • Page 13: Inherent Drawbacks Of Cordless Impact Drills Requiring Particular Attention During Sales Promotion

    (6) Variation in amount of work possible per charge Although the nominal chargeable capacity of the storage batteries used with the Model DV 12DV is 1.4 Ah, the actual capacity may vary within 10% of that value depending on the ambient temperature during use and charging, and the number of times the batteries have been recharged.

  • Page 14: Reference Materials

    (7) Precautions in the use of HSS drill bits Although the Model DV 12DV is designed for drilling capacities of 18 mm (23/32") in wood, and 10 mm (3/8") into aluminum and mild steel, its capability is not as efficient as conventional plug-in type models.

  • Page 15: Repair Guide

    10-1. Precautions in Disassembly and Reassembly The [Bold] numbers in the description below correspond to the item numbers in the Parts List and exploded assembly diagram for the Model DV 12DV. 10-1-1. Disassembly (1) Removal of the Drill Chuck 10VLR-N (W/O Chuck Wrench) [2] (See Fig. 4.) Remove the Drill Chuck 10VLR-N (W/O Chuck Wrench) [2] of the fully assembled main body in accordance with the following procedures.
  • Page 16 (4) Disassembly of the gear unit (a) Remove the Cap [4] from the Front Case [12]. Take care not to remove the Switch Plate [8] and the Nut [9] from the Front Case [12] in this operation. (b) Turn the Motor [31] counterclockwise when viewed from the rear and remove it from the Rear Case [20]. (c) Remove the Shift Arm [22] from the Rear Case [20], and remove the Shift Knob [42] from the Shift Arm [22].
  • Page 17 10-1-2. Reassembly Reassembly can generally be carried out as the reverse of the disassembly procedure, with some items to be noted as follows. (1) Reassembly of the power supply unit (a) Mount the Ferrite Core [41], Internal Wire (Black) [37] and Internal Wire (Red) [38] as shown in Fig. 7. Ferrite Core [41] DC-speed Control Switch [39] side...
  • Page 18 (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).
  • Page 19 Recess Projection [29] Projection Fig. 11 (c) Install the Click Spring [5] and the Cap [4] to the assembly reassembled in step (b). (See Fig. 12.) (i) Insert the ridge and the projections of the Click Spring [5] into the holes of the Cap [4]. (ii) When the Nut [9] is screwed in the Front Case [12] about 1-3/8 turns (495˚), the three projections of the Nut [9] and the marking of the Rear Case [20] are positioned as shown in Fig.
  • Page 20 (d) Install the Shift Arm [22] into the assembly reassembled in step (c). With the ridge at the Shift Arm [22] facing the Motor [31] side, first install them on the unmarked side of the assembly reassembled in step (c). Then insert the projections on the Shift Arm [22] into the holes in the Rear Case [20] and make sure that the projections are fitted into the grooves in the Slide Ring Gear [23] mounted within the Rear Case [20].
  • Page 21 (4) Installation of the assembly reassembled in step (3) into Housing (A). (B) Set [36] (a) Install the Pushing Button [40] into Housing (B) [36]. (See Fig. 15.) (b) Install the assembly reassembled in step (3) into Housing (A) [36]. Note that the projections on the Front Case [12] and the Motor Spacer [30] are engaged in the recesses in Housing (A) [36], and the projection on Housing (A) [36] is engaged in the groove of the Cap [4].

  • Page 22: Precautions In Disassembly And Reassembly Of Battery Charger

    (b) The tightening torque of each screw is given below. Special Screw (Left Hand) M6 x 23 [1] : 2.9 --- 3.9 N m ( 30 --- 40 kgf cm, 26.1 --- 34.8 in-lbs.) • • Drill Chuck 10VLR-N (W/O Chuck Wrench) [2] : 12.7 --- 16.7 N m ( 130 --- 170 kgf cm, 113 --- 148 in-lbs.)

  • Page 23: Standard Repair Time (Unit) Schedules

    11. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL Fixed Work Flow DV 12DV General Assembly Housing Spring (A).(B) Set Drill Chuck Motor DC-speed Control Switch O-ring Shift Arm (Gear Box Ass'y) Front Case Ring Gear Carrier First Ring Gear Planet Gear...
  • Page 24 LIST NO. F852 ELECTRIC TOOL PARTS LIST CORDLESS IMPACT DRILL 2001 • • Model DV 12DV (E1)
  • Page 25 PARTS DV 12DV ITEM CODE NO. DESCRIPTION REMARKS USED 311-959 SPECIAL SCREW (LEFT HAND) M6X23 310-154 DRILL CHUCK 10VLR-N (W/O CHUCK WRENCH) 319-959 GEAR BOX ASS’Y INCLUD.4-30 319-963 319-754 CLICK SPRING 320-088 O-RING 320-089 LOCK WASHER 320-090 SWITCH PLATE 319-743...

  • Page 26: Standard Accessories

    STANDARD ACCESSORIES DV 12DV ITEM CODE NO. DESCRIPTION REMARKS USED CHARGER (MODEL UC 12SD) 318-236 + DRIVER BIT NO.2 55L 319-964 HOOK 319-967 CASE BIT SET TORCHLIGHT (MODEL UB 12D) OPTIONAL ACCESSORIES ITEM CODE NO. DESCRIPTION REMARKS USED 873-929 WRENCH 14MM...
  • Page 27 DV 12DV ITEM CODE NO. DESCRIPTION REMARKS USED * ALTERNATIVE PARTS Printed in Japan 5 -- 01 (010510N)

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