Hitachi DV 18DMR Technical Data And Service Manual
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Hitachi DV 18DMR Technical Data And Service Manual

Cordless impact driver drill
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CORDLESS IMPACT
DRIVER DRILL
LIST Nos. DV 18DMR: E485
DV 14DMR: E486
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
DV 18DMR
DV 14DMR
Mar. 2005
MODELS
DV 18DMR
DV 14DMR
Hitachi
Power Tools
TECHNICAL DATA
SERVICE MANUAL
AND
D

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Summary of Contents for Hitachi DV 18DMR

  • Page 1 MODELS DV 18DMR DV 14DMR Hitachi Power Tools CORDLESS IMPACT DRIVER DRILL TECHNICAL DATA DV 18DMR SERVICE MANUAL DV 14DMR LIST Nos. DV 18DMR: E485 Mar. 2005 DV 14DMR: E486 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT...
  • Page 2 REMARK: Throughout this TECHNICAL DATA AND SERVICE MANUAL, symbols are used in the place of company names and model names of our competitors. The symbols utilized here are as follows: Competitors Symbols Utilized Company Name Model Name R841151 RIDGID MILWAIKEE 0624-20, 0614-20 DC988, DC984 DEWALT...

  • Page 3: Table Of Contents

    4. SELLING POINTS ..........................2 4-1. Selling Point Descriptions ........................3 5. SPECIFICATIONS ..........................6 5-1. Model DV 18DMR ..........................6 5-2. Model DV 14DMR ..........................8 6. COMPARISONS WITH SIMILAR PRODUCTS ................. 10 6-1. Model DV 18DMR ..........................10 6-2.

  • Page 4: Product Name

    The Models DV 18DMR and DV 14DMR are the excellent top-end cordless driver drills developed to reinforce our 18-V and 14.4-V product lines and also to meet the market demands. While the Model DV 18DMR is compact and lightweight (entire length 253 mm, weight 2.7 kg), it provides the class-top maximum torque 62 N m thanks to •...

  • Page 5: Selling Points

    Prevents the driver bit from loosening The carbon brushes and armature are Operable with one hand singly replaceable. Soft-grip handle New flat battery (DV 18DMR) Compact and stable Interchangeable with One-touch hook conventional batteries Ready for use at anytime...

  • Page 6: Selling Point Descriptions

    (DV 18DMR) • While the Model DV 18DMR is compact and lightweight (entire length 253 mm, weight 2.7 kg), it provides the class-top maximum torque 62 N m thanks to the optimum design (see Tables 1 and 2). The Models DV 18DMR •...
  • Page 7 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 Models DV 18DMR and DV 14DMR are also equipped with the ratcheting lock mechanism to prevent the sleeve from loosening during operation.
  • Page 8 [Conventional model] [Models DV 18DMR and DV 14DMR] 4-1-8. New flat battery The battery is flat enough to stand the Model DV 18DMR upright stability. The conventional Hitachi 18-V batteries are also usable. 4-1-9. Others The Models DV 18DMR and DV 14DMR have the following features common to the previous model.

  • Page 9: Specifications

    5. SPECIFICATIONS 5-1. Model DV 18DMR Capacity Screwdriver Machine screw 6 mm (1/4") • • • • • • • • Wood screw 8 dia. x 100 mm (#20 x 4") • • • • • • • • • • • •...
  • Page 10 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Gross DV 18DMR (2BLFK)/(2HLFK) 6.9 kg (15.2 Ibs.) •...

  • Page 11: Model Dv 14Dmr

    5-2. Model DV 14DMR Capacity Screwdriver Machine screw 6 mm (1/4") • • • • • • • • Wood screw 8 dia. x 75 mm (#20 x 3") • • • • • • • • • • • • Drill Brick 14 mm (9/16") [Depth 30 mm (1-1/4")]...
  • Page 12 Weight Main body unit (including battery) 2.5 kg (5.5 Ibs.) • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Charger unit (UC 14YFA, including cord) 0.6 kg (1.3 Ibs.) •...

  • Page 13: Comparisons With Similar Products

    6. COMPARISONS WITH SIMILAR PRODUCTS 6-1. Model DV 18DMR Maker HITACHI DV 18DV Model DV 18DMR Machine screw 6 mm (1/4") 6 mm (1/4") Not indicated Not indicated Screw 8 mm dia. x 75 mm 8 mm dia. x 100 mm...
  • Page 14 Maker B (EURO) B (U.S.A.) Model Not indicated Machine screw Not indicated Not indicated Not indicated Screw 6 mm dia. x 100 mm Not indicated 8 mm dia. Not indicated driving Wood screw (#16 x 4") 14 mm Not indicated 16 mm (5/8") 16 mm (5/8") Brick...

  • Page 15: Model Dv 14Dmr

    6-2. Model DV 14DMR HITACHI Maker DV 14DV Model DV 14DMR Machine screw 6 mm (1/4") 6 mm (1/4") Not indicated Screw 8 mm dia. x 50 mm 8 mm dia. x 75 mm Wood screw driving 6 mm dia. (1/4") (#20 x 2")
  • Page 16 Maker B (EURO) B (U.S.A.) Model Machine screw Not indicated Not indicated Not indicated Not indicated Screw 6 mm dia. x 75 mm driving Wood screw Not indicated 8 mm dia. Not indicated (#16 x 3") Brick 14 mm (9/16") 12 mm Not indicated 14 mm (9/16")

  • Page 17: Working Performance Per Single Charge

    7. WORKING PERFORMANCE PER SINGLE CHARGE 7-1. Model DV 18DMR Drilling and fastening performance comparison per charge Working capacity (*1) Driling speed Maker Type of work Model (sec./pc.) DV 18DMR HITACHI DV 18DV B (EURO) B (U.S.A.) < High speed >...
  • Page 18 Remark*1 Number of holes or fasteners per charge The above table shows an example of test data. The batteries used in this test are as follows: Model DV 18DMR, DV 18DV, Q, C: 3.0 Ah P, B (EURO), B (U.S.A.): 2.0 Ah E: 2.4 Ah...

  • Page 19: Model Dv 14Dmr

    7-2. Model DV 14DMR Drilling and fastening performance comparison per charge Working capacity (*1) Driling speed Type of work Maker Model (sec./pc.) DV 14DMR HITACHI 15.1 DV 14DV B (EURO) B (U.S.A.) 11.7 < High speed > DV 14DMR HITACHI DV 14DV B (EURO) B (U.S.A.)
  • Page 20 Type of work Maker Model (sec./pc.) *1800 *2400 *3000 *600 *1200 DV 14DMR *1350 HITACHI DV 14DV *1730 *990 *980 *970 B (EURO) *790 B (U.S.A.) *1350 < High speed > Remark* Number of machine screws fastened per charge Remark*1 Number of holes or fasteners per charge The above table shows an example of test data.

  • Page 21: Precautions In Sales Promotion

    8-1. Safety Instructions In the interest of promoting the safest and most efficient use of the Models DV 18DMR and DV 14DMR Cordless Impact Driver Drills 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 22 (8) Disposal of the Storage Batteries Ensure that all customers understand that the Storage Batteries 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 23 (3) The following caution is listed on the Name Plate to the Model UC 24YJ Charger. For the U.S.A. and Canada For safe operation, see Instruction Manual. Charge HITACHI CAUTION rechargeable batteries types EB7, EB9, EB12, EB14, EB18 and EB24 series. Other types of batteries may burst causing personal injury and damage.

  • Page 24: Inherent Drawbacks Of Cordless Impact Driver Drills Requiring Particular Attention

    (6) Variation in amount of work possible per charge Although the nominal chargeable capacity of the storage batteries used with the Model DV 18DMR and DV 14DMR is 2.0 Ah, 2.6 Ah or 3.0 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 25 (7) Precautions in the use of HSS Drill Bits For example, although the Model DV 18DMR is designed for drilling capacities of 50 mm (2") in wood, and 13 mm (1/2") in aluminum and mild steel, this capability is not as efficient as conventional electric power tools.

  • Page 26: Reference Materials

    9. REFERENCE MATERIALS 9-1. Speed Control Mechanism Spindle rotation speed of the Models DV 18DMR and DV 14DMR can be controlled by simply varying the amount by which the trigger switch is depressed. The relationship between the amount the trigger switch is depressed (in millimeters) and the rotation speed is illustrated in Fig.

  • Page 27: Repair Guide

    10-1. Precautions in Disassembly and Reassembly The [Bold] numbers in the descriptions below correspond to the item numbers in the Parts List and exploded assembly diagrams for the Models DV 18DMR and DV 14DMR. 10-1-1. Disassembly (1) Removal of the Hook Ass'y [51] [53] Remove Special Screw (A) M5 [57] with a flat-blade screwdriver or a coin.
  • Page 28 (4) Adjust the Front Cap [4] to " ". (5) Disassembly of the main unit Remove the ten Tapping Screws (W/Flange) D3 x 16 (Black) [36] from the main unit. Holding the battery chamber of Housing (B) [38], gently remove Housing (B) [38]. Then the inside parts can be removed in an assembled or single state.
  • Page 29 Projections of Front Case [12] Projections of switch flange Switch flange Switch Plate [5] Recess of Switch Plate [5] Fig. 4 (c) Disassembly of the clutch mechanism Turn the Nut [6] counterclockwise to remove from the Front Case [12]. Take out the Spring [7], Thrust Washer [8], Stopper [9] and Stopper Spring [10] in order.
  • Page 30 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 Perform wiring according to the wiring diagram (Fig. 5). Pay attention to the connecting direction of the internal wires and the terminals.
  • Page 31 Fig. 7 (3) Reassembly of the gear unit (a) Apply grease (Hitachi Motor Grease No. 29) to the engaging portions of each gear and contacting surfaces with the pin set (6 pcs.) of the ring gear properly. (b) Mount the parts from the Pin Set (6 pcs.) [13] to Washer (B) [29] to the part assembled in the above (2) in order (see Fig.
  • Page 32 Apply grease approx. 1.2 g (Hitachi Motor Grease No. 29) to the shaded portion in the Front Case [12] (See Fig. 9). NOTE: Be sure to apply grease to the shaded portion in the Front Case [12]. Otherwise, the spindle lock may not work properly.
  • Page 33 Pay attention to the mounting direction of the Ring Gear [16], Slide Ring Gear [23], Pinion (C) [24] and Pinion (B) [26] (see Fig. 8). Mount the Front Case [12] to the Rear Case [20] so that the concave portion of the Front Case [12] aligns with the protrusion of the Rear Case [20] (see Fig.
  • Page 34 (5) Reassembly of the drive unit (a) Fit the protrusion of the Motor Spacer [30] in the concave portion of the Rear Case [20] engaging the pinion of the Armature and Pinion Set [31] with Planet Gear (A) Set (4 pcs.) [27]. Turn it fully clockwise viewing from the rear of the Armature and Pinion Set [31] (see Fig.
  • Page 35 (c) Mounting the Click Spring [11] and the Front Cap [4]. Mount the Switch Plate [5] aligning with the projections of the Front Case [12] as shown in Fig. 4. Mount the Click Spring [11] to the Front Case [12]. When the Nut [6] is screwed in the Front case [12] about 1-11/12 turns (690û), the mark (i) of the Nut [6] and the marking of Switch Plate [5] are positioned as shown in Fig.
  • Page 36 (R) side, the rotating direction of the Drill Chuck 13VLRL-N (W/O Chuck Wrench) [2] should be clockwise as viewed from behind. Switch on and off the Models DV 18DMR and DV 14DMR using the battery. Then turn the Drill Chuck 13VLRL-N (W/O Chuck Wrench) [2] by hand in forward and reverse direction to check that the spindle lock properly works in either direction within a half rotation.

  • Page 37: Precaution In Disassembly And Reassembly Of Battery Charger

    (11) Screw tightening torque Special Screw (Left Hand) M6 x 23 [1]............. 3.92 -- - 4.9 N m (40 -- - 50 kgf • • Drill Chuck 13VLRL-N (W/O Chuck Wrench) [2] ........17.6 -- - 21.6 N m (180 --- 220 kgf •...

  • Page 38: Standard Repair Time (Unit) Schedules

    11. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL Fixed Work Flow DV 14DMR DV 18DMR Housing (A).(B) General Assembly Armature and Pinion Set Magnet Brush Block DC-Speed Control Switch Shift Knob Gear Box Ass'y Front Cap Drill Chuck Spring (Keyless)
  • Page 39 Hitachi Power Tools LIST NO. E485 ELECTRIC TOOL PARTS LIST CORDLESS IMPACT DRIVER DRILL 2005 • • Model DV 18DMR (E1)
  • Page 40 PARTS DV 18DMR ITEM CODE NO. DESCRIPTION REMARKS USED 311-959 SPECIAL SCREW (LEFT HAND) M6X23 323-898 DRILL CHUCK 13VLRL-N (W/O CHUCK WRENCH) 324-061 GEAR BOX ASS’Y INCLUD. 4-10, 12-30 324-074 FRONT CAP 324-136 SWITCH PLATE 324-064 324-135 SPRING 324-063 THRUST WASHER...
  • Page 41 PARTS DV 18DMR ITEM CODE NO. DESCRIPTION REMARKS USED 320-288 V-LOCK NUT M5 321-918 HOOK ASS’Y (W/LIGHT) INCLUD. 52, 54 FOR USA, CAN 321-672 TAPPING SCREW D2X6 FOR USA, CAN 306-952 STRAP (BLACK) 319-926 HOOK SPRING 320-881 SPECIAL SCREW (A) M5 322-880 BATTERY EB 1820L (W/ENGLISH N.P.)
  • Page 42 DV 18DMR ITEM CODE NO. DESCRIPTION REMARKS USED Printed in Japan --- 4 --- 3 -- 05 (050310N)
  • Page 43 Hitachi Power Tools LIST NO. E486 ELECTRIC TOOL PARTS LIST CORDLESS IMPACT DRIVER DRILL 2005 • • Model DV 14DMR (E1)
  • Page 44 BRUSH CAP 313-687 TAPPING SCREW (W/FLANGE) D3X16 (BLACK) NAME PLATE 323-002 HOUSING (A). (B) SET LABEL 322-999 PLATE (A) HITACHI LABEL 324-137 SHIFT KNOB 323-229 FERRITE CORE EXCEPT FOR NZL, AUS, USA, CAN 322-997 PUSHING BUTTON 322-994 DC-SPEED CONTROL SWITCH...
  • Page 45 PARTS DV 14DMR ITEM CODE NO. DESCRIPTION REMARKS USED 320-288 V-LOCK NUT M5 321-918 HOOK ASS’Y (W/LIGHT) 1 INCLUD. 52, 54 FOR USA, CAN 321-672 TAPPING SCREW D2X6 2 FOR USA, CAN 306-952 STRAP (BLACK) 319-926 HOOK SPRING 320-881 SPECIAL SCREW (A) M5 318-372 BATTERY EB 1430H (W/ENGLISH N.P.) 322-883...
  • Page 46 DV 14DMR ITEM CODE NO. DESCRIPTION REMARKS USED Printed in Japan --- 4 --- 3 -- 05 (050315N)

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