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Hitachi DS 18DMR Service Manual
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Hitachi DS 18DMR Service Manual

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CORDLESS DRIVER DRILL
LIST Nos. DS 18DMR: G809
DS 14DMR: G808
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
DS 18DMR
DS 14DMR
May 2004
MODELS
DS 18DMR
DS 14DMR
Hitachi
Power Tools
TECHNICAL DATA
SERVICE MANUAL
AND
D

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Summary of Contents for Hitachi DS 18DMR

  • Page 1 MODELS DS 18DMR DS 14DMR Hitachi Power Tools CORDLESS DRIVER DRILL TECHNICAL DATA DS 18DMR SERVICE MANUAL DS 14DMR LIST Nos. DS 18DMR: G809 May 2004 DS 14DMR: G808 SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT...
  • Page 2 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 R84015, R83015 RIDGID MILWAIKEE 0622-24...

  • Page 3: Table Of Contents

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

  • Page 4: Product Name

    18-V and 14.4-V product lines and also to meet the market demands. The Models DS 18DMR and DS 14DMR are of an all new cyber design. While the Model DS 18DMR is compact and lightweight (entire length 237 mm, weight 2.5 kg), it provides the class-top maximum torque 62 N m thanks to the optimally designed motor and •...

  • 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 (DS 18DMR) Compact and stable Interchangeable with One-touch hook conventional batteries Ready for use at anytime...

  • Page 6: Selling Point Descriptions

    4-1-2. Improved overload durability (improved cooling efficiency) The Models DS 18DMR and DS 14DMR are equipped with the separate-type motor that 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 DS 12DM increases the cooling efficiency as well as the large radial fan increases the volume of air (See Fig.
  • 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 DS 18DMR and DS 14DMR are also equipped with the ratcheting lock mechanism to prevent the sleeve from loosening during operation.
  • Page 8 [Conventional model] [Models DS 18DMR and DS 14DMR] 4-1-8. New flat battery The battery is flat enough to stand the Model DS 18DMR upright stability. The conventional Hitachi 18-V batteries are also usable. 4-1-9. Others The Models DS 18DMR and DS 14DMR have the following features common to the previous model.

  • Page 9: Specifications

    5. SPECIFICATIONS 5-1. Model DS 18DMR Capacity Screwdriver Machine screw 6 mm (1/4") • • • • • • • • Wood screw 8 dia. x 100 mm (#20 x 4") • • • • • • • • • • • •...
  • Page 10 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Gross DS 18DMR (2BLFK)/(2HLFK) 6.7 kg (14.8 Ibs.) •...

  • Page 11: Model Ds 14Dmr

    5-2. Model DS 14DMR Capacity Screwdriver Machine screw 6 mm (1/4") • • • • • • • • Wood screw 8 dia. x 75 mm (#20 x 3") • • • • • • • • • • • • Drill Metal Mild steel 13 mm (1/2") [Thickness 1.6 mm (1/16")]...
  • Page 12 Weight Main body unit (including battery) 2.3 kg (5.1 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 DS 18DMR Maker HITACHI DS 18DVB2 Model DS 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 Model Machine screw Not indicated Not indicated 6 mm (1/4") 13 mm (1/2") Screw 6 mm dia. x 100 mm 10 mm dia. x 89 mm 10 mm dia. x 89 mm driving Wood screw Not indicated (#14 x 4") (3/8"...

  • Page 15: Model Ds 14Dmr

    6-2. Model DS 14DMR Maker HITACHI DS 14DVB2 Model DS 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 Not indicated (#20 x 2") (#20 x 3") Mild steel 13 mm (1/2")
  • Page 16 Maker Model Machine screw Not indicated Not indicated 6 mm (1/4") 13 mm (1/2") Screw 6 mm dia. x 75 mm 8 mm dia. x 76 mm 6 mm dia. x 75 mm driving Wood screw Not indicated (#20 x 3") (1/4"...

  • Page 17: Working Performance Per Single Charge

    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 DS 18DMR: 3.0 Ah Model DS 18DVB2, P: 2.0 Ah E, Q, B: 2.4 Ah C-1, C-2: 2.6 Ah...

  • Page 18: Model Ds 14Dmr

    7-2. Model DS 14DMR Drilling and fastening performance comparison per charge Working capacity (*1) Driling speed *1200 *1500 *300 Type of work Maker Model *900 *600 (sec./pc.) DS 14DMR HITACHI DS 14DVB2 < Low speed > 11.7 DS 14DMR HITACHI 16.1 DS 14DVB2 12.9...

  • Page 19: Precautions In Sales Promotion

    8-1. Safety Instructions In the interest of promoting the safest and most efficient use of the Models DS 18DMR and DS 14DMR Cordless 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 20 (7) Do not attempt to disassemble the Storage Battery or the Charger. Special devices, such as a thermostat, are built into the storage battery and charger to permit rapid charging. Incorrect parts replacement and/or wiring will cause malfunctions which could result in fire or other hazards. Instruct the customer to bring these units to an authorized service center in the event repair or replacement is necessary.
  • Page 21 (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 22: Inherent Drawbacks Of Cordless Driver Drills Requiring Particular Attention During Sales Promotion

    (5) Variation in amount of work possible per charge Although the nominal chargeable capacity of the storage batteries used with the Model DS 18DMR and DS 14DMR is 2.0 Ah, 2.4 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 23 (6) Precautions in the use of HSS Drill Bits For example, although the Model DS 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 24: Reference Materials

    9. REFERENCE MATERIALS 9-1. Speed Control Mechanism Spindle rotation speed of the Models DS 18DMR and DS 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 25: 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 DS 18DMR and DS 14DMR. 10-1-1. Disassembly (1) Removal of the Hook Ass'y [48] Remove the Special Screw (A) M5 [54] with a flat-blade screwdriver or a coin.
  • Page 26 (4) Adjust the frong Cap [4] to " ". (5) Disassembly of the main unit Remove the ten Tapping Screws (W/Flange) D3 x 16 (Black) [34] from the main unit. Holding the battery chamber of Housing (B) [36], gently remove Housing (B) [36]. Then the inside parts can be removed in an assembled or single state.
  • Page 27 (9) Disassembly of the power supply unit Disconnect each internal wire of Brush Block [31] and Terminals [45] [47] with a solder iron. (Note) Do not remove the fin secured to the DC-speed control switch with a screw. 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.
  • Page 28 (b) Screw the Nut [5] in the Front Case [10] (see Fig. 4). Align the mark (i) on the Nut [5] with the mark on the Front Case [10] then screw it in. Rotate the Nut [5] about a turn clockwise to align the mark (i) on the Nut [5] with the mark on the Front Case [10]. At this time, check that the "Y"...
  • Page 29 Apply grease approx. 1.2 g (Hitachi Motor Grease No. 29) to the shaded portion in the Front Case [10] (See Fig. 6). (Note) Be sure to apply grease to the shaded portion in the Front Case [10]. Otherwise, the spindle lock may not work properly.
  • Page 30 Pay attention to the mounting direction of the Ring Gear [14], Slide Ring Gear [21], Pinion (C) [22] and Pinion (B) [24] (see Fig. 5). Mount the Front Case [10] to the Rear Case [18] so that the concave portion of the Front Case [10] aligns with the protrusion of the Rear Case [18] (see Fig.
  • Page 31 (5) 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 and Pinion Set [29] with Planet Gear (A) Set (4 pcs.) [25]. Turn it fully clockwise viewing from the rear of the Armature and Pinion Set [29] (see Fig.
  • Page 32 (c) Mounting the Click Spring [11] and the Front Cap [4]. Mount the Click Spring [11] to the Front Case [10]. Mount the Front Cap [4]. Check that the protrusion of the Click Spring [11] is inserted into the groove inside the Front Cap [4]. (6) Reassembly of the main unit (a) Mount the power supply unit and the drive unit that were reassembled in the above procedure to Housing (A) [36].
  • Page 33 (R) side, the rotating direction of the Drill Chuck 13VLRK-N (W/O Chuck Wrench) [2] should be clockwise as viewed from behind. Switch on and off the Models DS 18DMR and DS 14DMR using the battery. Then turn the Drill Chuck 13VLRK-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 34: 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 13VLRK-N (W/O Chuck Wrench) [2] ........17.6 -- - 21.6 N m (180 -- - 220 kgf •...

  • Page 35: Standard Repair Time (Unit) Schedules

    11. STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL Fixed Work Flow DS 18DMR DS 14DMR 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 36 Hitachi Power Tools LIST NO. G809 ELECTRIC TOOL PARTS LIST CORDLESS DRIVER DRILL 2004 • • Model DS 18DMR (E1)
  • Page 37 PARTS DS 18DMR ITEM CODE NO. DESCRIPTION REMARKS USED 311-959 SPECIAL SCREW (LEFT HAND) M6X23 323-000 DRILL CHUCK 13VLRK-N (W/O CHUCK WRENCH) 322-969 GEAR BOX ASS’Y 1 INCLUD. 4-10, 12-28 322-991 FRONT CAP 322-974 323-228 SPRING 322-973 THRUST WASHER 322-972...
  • Page 38 PARTS DS 18DMR ITEM CODE NO. REMARKS DESCRIPTION USED 306-952 STRAP (BLACK) 319-926 HOOK SPRING 320-881 SPECIAL SCREW (A) M5 322-878 BATTERY EB 1826HL (W/ENGLISH N.P.) 322-876 BATTERY EB 1830HL (W/ENGLISH N.P.) 322-877 BATTERY EB 1830HL (W/ENGLISH N.P.) 2 FOR USA, CAN 322-879 BATTERY EB 1824L (W/ENGLISH N.P.)
  • Page 39 STANDARD ACCESSORIES DS 18DMR ITEM CODE NO. DESCRIPTION REMARKS USED CHARGER (MODEL UC 24YFA) CHARGER (MODEL UC 24YJ) 983-006 + DRIVER BIT NO.2 65L 323-001 SIDE HANDLE 323-230 CASE Printed in Japan --- 4 --- * ALTERNATIVE PARTS 5 -- 04...
  • Page 40 Hitachi Power Tools LIST NO. G808 ELECTRIC TOOL PARTS LIST CORDLESS DRIVER DRILL 2004 • • Model DS 14DMR (E1)
  • Page 41 PARTS DS 14DMR ITEM CODE NO. DESCRIPTION REMARKS USED 311-959 SPECIAL SCREW (LEFT HAND) M6X23 323-000 DRILL CHUCK 13VLRK-N (W/O CHUCK WRENCH) 322-969 GEAR BOX ASS’Y 1 INCLUD. 4-10, 12-28 322-991 FRONT CAP 322-974 323-228 SPRING 322-973 THRUST WASHER 322-972 STOPPER 322-971 STOPPER SPRING...
  • Page 42 PARTS DS 14DMR ITEM CODE NO. REMARKS DESCRIPTION USED 306-952 STRAP (BLACK) 319-926 HOOK SPRING 320-881 SPECIAL SCREW (A) M5 315-130 BATTERY EB 14B (W/ENGLISH N.P.) 315-129 BATTERY EB 14B (W/ENGLISH N.P.) 2 FOR USA, CAN 322-883 BATTERY EB 1426H (W/ENGLISH N.P.) 318-372 BATTERY EB 1430H (W/ENGLISH N.P.) 319-104...

  • Page 43: Standard Accessories

    STANDARD ACCESSORIES DS 14DMR ITEM CODE NO. DESCRIPTION REMARKS USED CHARGER (MODEL UC 14YFA) 983-006 + DRIVER BIT NO.2 65L 323-001 SIDE HANDLE 1 FOR USA, CAN 323-230 CASE OPTIONAL ACCESSORIES ITEM CODE NO. DESCRIPTION REMARKS USED 323-001 SIDE HANDLE 1 EXCEPT FOR USA, CAN Printed in Japan --- 4 ---...

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