1. Manuals
  2. Brands
  3. Hitachi Manuals
  4. Rotary Hammer
  5. DH 14DL
  6. Technical data and service manual

Hitachi DH 14DL Technical Data And Service Manual

14.4/18 v cordless rotary hammer
Hide thumbs Also See for DH 14DL:
Table of Contents

Advertisement

Quick Links

Download this manual
PRODUCT NAME
Hitachi 14.4 V Cordless Rotary Hammer
DH 14DL, DH 14DMR
Model
Hitachi 18V Cordless Rotary Hammer
DH 18DL, DH 18DM
Model
MARKETING OBJECTIVE
The Models DH 14DL and DH 18DL are cordless rotary hammers equipped with a 14.4-V lithium-ion battery and
a 18-V lithium-ion battery respectively.
The Models DH 14DMR and DH 18DMR are cordless rotary hammers equipped with a 14.4-V Ni-Cd battery and
a 18-V Ni-Cd battery respectively.
(1) Fastest drilling speed
(2) Compact and lightweight
(3) Switchable hammering force mechanism
(4) Soft grip handle
We aim to expand our market share with the new Models DH 14DL/DH 14DMR/DH 18DL/DH 18DMR.
APPLICATIONS
• Drilling anchor holes
• Drilling holes in concrete, tile, brick, and similar materials
• Drilling holes in steel and wood
• Tightening and loosening machine screws and wood screws
SELLING POINTS
[ NEW FEATURES ]
Fastest drilling speed
Compact & lightweight
Switchable hammering force mechanism
Soft grip handle
Li-ion battery for DH 14DL/DH 18DL,
Ni-Cd battery for DH 14DMR/DH 18DMR
Replaceable carbon brush for longer motor life
Idle striking prevention mechanism
With light hook
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
LIST Nos.
DH 14DL: G876,
DH 14DMR: G877,
DH 18DL: G878,
DH 18DMR: G879
Jul. 2007
R
International Sales Division
D

Advertisement

Table of Contents
loading

Related Manuals for Hitachi DH 14DL

Summary of Contents for Hitachi DH 14DL

  • Page 1 Model MARKETING OBJECTIVE The Models DH 14DL and DH 18DL are cordless rotary hammers equipped with a 14.4-V lithium-ion battery and a 18-V lithium-ion battery respectively. The Models DH 14DMR and DH 18DMR are cordless rotary hammers equipped with a 14.4-V Ni-Cd battery and a 18-V Ni-Cd battery respectively.
  • Page 2 REMARK: For more information about HANDLING INSTRUCTIONS, visit our website at: http://www.hitachi-koki.com/manual_view_export/ Throughout this TECHNICAL DATA AND SERVICE MANUAL, a symbol(s) is(are) used in the place of company name(s) of out competitor(s). The symbol(s) utilized here is(are) as follows: Competitors...

  • Page 3: Table Of Contents

    1. Precautions in Disassembly and Reassembly ---------------------------------------------------------- 19 2. Precautions in Disassembly and Reassembly of Battery Charger --------------------------------- 30 STANDARD REPAIR TIME (UNIT) SCHEDULES-------------------------------------------------------------------- 31 Assembly Diagram for DH 14DL Assembly Diagram for DH 14DMR Assembly Diagram for DH 18DL...

  • Page 4: Selling Point Descriptions

    SELLING POINT DESCRIPTIONS Fastest drilling speed The drilling speed of the Models DH 14DL, DH 14DMR, DH 18DL and DH 18DMR are 1.05 times higher than C thanks to the efficient transmission of the hammering energy. For detail refer to “Drilling Speed Comparisons”...
  • Page 5 The pressing force of spring (B) is as low as 1.0 kg to 2.0 kg in comparison with the conventional mouth system. The Models DH 14DL, DH 14DMR, DH 18DL and DH 18DMR are also suitable for drilling in...
  • Page 6 Spring (B) Slide plate Piston Slip mechanism Strike Tool shaft Cylinder Coil spring Second gear Cylinder flange Clutch Reciprocating bearing Needle bearing With light hook (1) The hook can be quickly slid out whenever necessary and slid in when not necessary. (2) The hook is mountable on either side using a flat-blade screwdriver or a coin.

  • Page 7: Specifications

    Main body unit (including battery) ------------------------------------- 2.1 kg (4.6 lbs.) Weight Charger unit (UC 18YRL, including cord) ---------------------------- 0.6 kg (1.3 lbs.) Gross DH 14DL (2LRK) ----------------------------------------------------------- 6.2 kg (13.7 lbs) DH 14DL (NN) -------------------------------------------------------------- 2.3 kg (5.1 lbs) Charger (UC 18YRL) ------------------------------------------------------------------------1 Battery (BCL 1430) --------------------------------------------------------------------------2...
  • Page 8 DH 18DL Model 16mm (5/8”) Concrete Steel 13mm (1/2”) Capacity Wood 18mm (11/16”) SDS-plus type only Usable drill bits –1 –1 No-load rotation speed “POWER” mode: 1,500 min “SAVE” mode: 750 min –1 “POWER” mode: 6,200 min “SAVE” mode: 3,100 min Full-load blow DC magnet motor Type of motor...
  • Page 9 DH 14DMR Model 16mm (5/8”) Concrete Steel 13mm (1/2”) Capacity Wood 18mm (11/16”) SDS-plus type only Usable drill bits –1 –1 No-load rotation speed “POWER” mode: 1,500 min “SAVE” mode: 750 min –1 “POWER” mode: 6,200 min “SAVE” mode: 3,100 min Full-load blow DC magnet motor Type of motor...
  • Page 10 DH 18DMR Model 16mm (5/8”) Concrete Steel 13mm (1/2”) Capacity Wood 18mm (11/16”) SDS-plus type only Usable drill bits –1 –1 No-load rotation speed “POWER” mode: 1,500 min “SAVE” mode: 750 min –1 “POWER” mode: 6,200 min “SAVE” mode: 3,100 min Full-load blow DC magnet motor Type of motor...

  • Page 11: Comparisons With Similar Products

    COMPARISONS WITH SIMILAR PRODUCTS (Superior specifications: 1. Specifications comparisons Maker HITACHI Model name DH 14DL DH 18DL DH 14DMR DH 18DMR Concrete 16 mm (5/8”) 16 mm (1/2”) Capacity Steel 13 mm (1/2”) 13 mm (1/2”) Wood 18 mm (11/16") 24 mm (15/16")

  • Page 12: Drilling Speed Comparisons

    Drilling speed depends on the operating conditions. The test result is based on actual factory tests, and is used as a reference only. The drilling speed comparisons for downward drilling. The drill bits used are the Hitachi genuine SDS-plus shank bits. Hitachi...

  • Page 13: Per Charge Working Capacity Comparisons

    3. Per charge working capacity comparisons The number of holes which can be drilled into concrete per battery charge may vary widely in accordance with the hardness of the concrete, the sharpness and condition of the drill bit and other factors. Accordingly, the test results are intended for reference purposes only.

  • Page 14: Precautions In Sales Promotion

    (8) Disposal of the storage batteries Ensure that all customers understand that Type 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 15 B. Caution Plate (1) The following cautions are listed on the Name Plate attached to the main body of each tool. [ For the U.S.A. and Canada ] (2) The following cautions are listed on the name plate attached to each storage battery. [ For Europe ] [ For the U.S.A.

  • Page 16: Precautions Requiring Particular Attention During Sales Promotion

    (1) Appropriate drilling capacity of the Model DH 14DL/DH 14DMR/DH 18DL/ DH 18DMR The Models DH 14DL, DH 14DMR, DH 18DL and DH 18DMR are not capable of drilling several dozens of holes like a conventional AC type impact or hammer drill because it is a cordless rotary hammer powered by a battery.

  • Page 17: Reference Materials

    Piston reciprocating mechanism In the Models DH 14DL, DH 14DMR, DH 18DL and DH 18DMR, through adoption of a spiral drive system (a mechanism using a reciprocating bearing), a more compact design has been achieved by arranging the motor shaft in parallel with the tool shaft.

  • Page 18: Changeover Between "Rotation Only" And "Rotation And Hammering

    Slip mechanism The slip mechanism in the Models DH 14DL, DH 14DMR, DH 18DL and DH 18DMR consists of a coil spring which applies a pre-set amount of pressure to ensure the interlocking of three claws provided on the flange of the cylinder (the final rotating shaft) and three matching claws provided on the face of the second gear, by which rotation is transmitted to the cylinder.

  • Page 19: Precautions For Use Of "Rotation Only" (No Striking) Function

    4. Precautions for use of “Rotation only” (no striking) function Each of the Models DH 14DL, DH 14DMR, DH 18DL and DH 18DMR is equipped with a change lever for changeover between “rotation only” and “rotation and hammering” functions. Be sure to set the change lever to “rotation only”...

  • Page 20: Tool Retainer Section

    Fig. 3 Rotation Rotation a : b = 1:2 25° 30° Section A-B 130° 6. Tool retainer section The tool retainer is structured as shown in Fig. 4. The tip of the tool retainer is covered with the front cap (made of rubber) to prevent dust and chips from getting inside.

  • Page 21: Dust Collector (B)

    7. Dust collector (B) When drilling holes overhead, dust collector (B) (optional accessory) can be mounted to prevent dust and chips from falling downward. Dust collector (B) is intended solely for use when drilling holes in concrete, and cannot be used for drilling holes in steel or wood. It is designed for use with drill bits with overall length of 166 mm, 160 mm and 110 mm, and cannot be used with any longer bits.

  • Page 22: Repair Guide

    1. Precautions in Disassembly and Reassembly The [Bold] numbers in the description below correspond to the item numbers in the Parts List and the exploded assembly diagram for the Models DH 14DL, DH 14DMR, DH 18DL and DH 18DMR. Disassembly 1.
  • Page 23 (2) Remove the Spacer [35] from the tip of the Second Shaft [36] and move Disassembly of the hammering mechanism the Piston [29] to the top dead Piston [29] center (Inner Cover Ass’y [33] side) Reciprocating Bearing [38] by turning the Second Shaft [36]. Then the arm of the Reciprocating Inner Cover Ass’y [33] Bearing [38] can be removed from...
  • Page 24 3. Removal of the gear cover (lever) Remove the Machine Screw M4 x 5 [15] Removal of the gear cover (lever) securing the Lever [12] to the Stopper [14] from Gear Cover [7] the inside of the Gear Cover [7]. Pull out the Lever [12] from the Gear Cover [7] to remove the Stopper [14].
  • Page 25 6. Removal of the housing and disassembly of the motor section After disassembly of the hammering Removal of the housing mechanism, pull out the Inner Cover Ass’y [33] in the arrow direction and Tapping Screw (W/Flange) remove the Tapping Screw (W/Flange) Housing (A).(B) D4 x 20 (Black) [58] D4 x 20 (Black) [58] from Housing...
  • Page 26 Reassembly Reassembly can be accomplished by following the disassembly procedure in reverse. However, special attention should be given to the following items. 1. Reassembly of the cylinder section Mount the O-ring (P-15) Reassembly of the cylinder section [22], Second Hammer [20], O-ring (B) [21] and Groove for the stopper ring Hammer Holder [23] in the...
  • Page 27 4. Reassembly of the internal pressure adjustment mechanism Push Felt Packing (A) [43], Valve [44] and Felt Packing (B) [45] in the Inner Cover Ass’y [33] as far as they will go in this order. Reassembly of the internal pressure adjustment mechanism Felt Packing (B) [45] Valve [44] Felt Packing (A) [43]...
  • Page 28 6. Reassembly of the switch section Perform wiring properly according to the following wiring diagram when replacing the Brush Block [54], DC-Speed Control Switch [61] and Battery Terminal Ass’y [63]. Wiring Diagram Brush Block [54] Lead wire (Black) Lead wire (Red) DC-Speed Control Switch [61] Lead wire (Brown) Lead wire (Blue)
  • Page 29 7. Reassembly of the housing section Mount the Brush Block [54], DC-Speed Control Switch [61] and Battery Terminal Ass’y [63] to Housing (A).(B) Set [59] as shown in the following figure being careful not to pinch the lead wires between housing (A) and housing (B).
  • Page 30 8. Mounting the piston Mount the Piston [29] as shown in the figure below. At this time, mount the Thrust Plate [27] aligning the change lever pocket of the Inner Cover Ass’y [33] with the notch of the Thrust Plate [27]. Mounting the piston Spring (B) [28] Inner Cover Ass’y [33]...

  • Page 31: Tightening Torque

    Fill 30 g of special grease in the Gear Cover [7] and 10 g in the groove of the Inner Cover Ass’y [33]. Apply Hitachi Motor Grease No. 29 to the Steel Ball D7.0 [18]. Apply 0.2 g of Hitachi Motor Grease No. 29 to the sliding surfaces of Housing (A).(B) Set [59] and Lever (B) [62].
  • Page 32 Wiring diagram Wiring arrangement Brush Block [54] Lead wire (Black) Lead wire (Red) DC-Speed Control Switch [61] Battery Terminal Ass’y [63] Lead wire (Black) Lead wire (Red) Lead wire (Brown) Lead wire (Blue) Battery Terminal Ass’y [63]...

  • Page 33: Precautions In Disassembly And Reassembly Of Battery Charger

    Wiring diagram Lead wire (Brown) Lead wire (Red) Lead wire (Blue) Lead wire (Black) DC-Speed Control Switch [61] 2. Precautions in Disassembly and Reassembly of Battery Charger Refer to the Technical Data and Service Manual for precautions in disassembly and reassembly of the battery charger Models UC 18YRL and UC 18YG.

  • Page 34: Standard Repair Time (Unit) Schedules

    STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL Fixed Work Flow DH 14DL DH14DMR DH 18DL DC-speed Hook Ass’y Control Switch DH 18DMR Armature Housing O-ring (S-24) (A).(B) Set Ball Bearing (609DD) Magnet Ball Bearing (626VV) Brush Block General Assembly Lever...
  • Page 35 Hitachi Power Tools LIST NO. G876 ELECTRIC TOOL PARTS LIST CORDLESS ROTARY HAMMER 2007 • • Model DH 14DL (E1)
  • Page 36 PARTS DH 14DL ITEM CODE NO. DESCRIPTION REMARKS USED 306-345 FRONT CAP 306-340 STOPPER RING 325-597 GRIP 327-879 BALL HOLDER 324-526 HOLDER PLATE 322-812 HOLDER SPRING 325-593 GEAR COVER 305-490 TAPPING SCREW (W/FLANGE) D4X30 (BLACK) NAME PLATE 965-469 RETAINING RING FOR D25 SHAFT...
  • Page 37 PARTS DH 14DL ITEM CODE NO. DESCRIPTION REMARKS USED 980-865 WASHER (A) 626-VVM BALL BEARING 626VVC2PS2L 328-486 BRUSH BLOCK 305-812 TAPPING SCREW (W/FLANGE) D4X16 (BLACK) 999-100 CARBON BRUSH (1 PAIR) 319-847 BRUSH CAP 301-653 TAPPING SCREW (W/FLANGE) D4X20 (BLACK) 328-491 HOUSING (A).(B) SET...
  • Page 38 OPTIONAL ACCESSORIES DH 14DL ITEM CODE NO. DESCRIPTION REMARKS USED 303-332 HAMMER DRILL CHUCK SET 13MM INCLUD. 602, 603 303-334 CHUCK HANDLE 303-335 RUBBER CAP 321-825 DRILL CHUCK AND ADAPTER SET INCLUD. 605, 606 303-623 CHUCK ADAPTER (G) (SDS PLUS)
  • Page 39 Hitachi Power Tools LIST NO. G877 ELECTRIC TOOL PARTS LIST CORDLESS ROTARY HAMMER 2007 • • Model DH 14DMR (E1)
  • Page 40 PARTS DH 14DMR ITEM CODE NO. DESCRIPTION REMARKS USED 306-345 FRONT CAP 306-340 STOPPER RING 325-597 GRIP 327-879 BALL HOLDER 324-526 HOLDER PLATE 322-812 HOLDER SPRING 325-593 GEAR COVER 305-490 TAPPING SCREW (W/FLANGE) D4X30 (BLACK) NAME PLATE 965-469 RETAINING RING FOR D25 SHAFT 944-274 WASHER 325-594...
  • Page 41 TAPPING SCREW (W/FLANGE) D4X20 (BLACK) 328-491 HOUSING (A).(B) SET 322-853 PUSHING BUTTON 328-484 DC-SPEED CONTROL SWITCH 328-480 LEVER (B) 328-490 BATTERY TERMINAL ASS’Y HITACHI LABEL 321-918 HOOK ASS’Y (W/LIGHT) INCLUD. 66, 68 321-672 TAPPING SCREW D2X6 326-276 LEVER (A) 320-288 V-LOCK NUT M5 306-952...
  • Page 42 OPTIONAL ACCESSORIES DH 14DMR ITEM CODE NO. DESCRIPTION REMARKS USED 303-332 HAMMER DRILL CHUCK SET 13MM INCLUD. 602, 603 303-334 CHUCK HANDLE 303-335 RUBBER CAP 321-825 DRILL CHUCK AND ADAPTER SET INCLUD. 605, 606 303-623 CHUCK ADAPTER (G) (SDS PLUS) 321-814 DRILL CHUCK 13VLRB-D INCLUD.
  • Page 43 Hitachi Power Tools LIST NO. G878 ELECTRIC TOOL PARTS LIST CORDLESS ROTARY HAMMER 2007 • • Model DH 18DL (E1)
  • Page 44 PARTS DH 18DL ITEM CODE NO. DESCRIPTION REMARKS USED 306-345 FRONT CAP 306-340 STOPPER RING 325-597 GRIP 327-879 BALL HOLDER 324-526 HOLDER PLATE 322-812 HOLDER SPRING 325-593 GEAR COVER 305-490 TAPPING SCREW (W/FLANGE) D4X30 (BLACK) NAME PLATE 965-469 RETAINING RING FOR D25 SHAFT 944-274 WASHER 325-594...
  • Page 45 328-492 HOUSING (A).(B) SET 322-853 PUSHING BUTTON 328-484 DC-SPEED CONTROL SWITCH 328-480 LEVER (B) 328-490 BATTERY TERMINAL ASS’Y HITACHI LABEL 321-918 HOOK ASS’Y (W/LIGHT) 1 INCLUD. 66, 68 321-672 TAPPING SCREW D2X6 326-276 LEVER (A) 320-288 V-LOCK NUT M5 306-952...
  • Page 46 OPTIONAL ACCESSORIES DH 18DL ITEM CODE NO. DESCRIPTION REMARKS USED 303-332 HAMMER DRILL CHUCK SET 13MM INCLUD. 602, 603 303-334 CHUCK HANDLE 303-335 RUBBER CAP 321-825 DRILL CHUCK AND ADAPTER SET INCLUD. 605, 606 303-623 CHUCK ADAPTER (G) (SDS PLUS) 321-814 DRILL CHUCK 13VLRB-D INCLUD.
  • Page 47 Hitachi Power Tools LIST NO. G879 ELECTRIC TOOL PARTS LIST CORDLESS ROTARY HAMMER 2007 • • Model DH 18DMR (E1)
  • Page 48 PARTS DH 18DMR ITEM CODE NO. DESCRIPTION REMARKS USED 306-345 FRONT CAP 306-340 STOPPER RING 325-597 GRIP 327-879 BALL HOLDER 324-526 HOLDER PLATE 322-812 HOLDER SPRING 325-593 GEAR COVER 305-490 TAPPING SCREW (W/FLANGE) D4X30 (BLACK) NAME PLATE 965-469 RETAINING RING FOR D25 SHAFT 944-274 WASHER 325-594...
  • Page 49 TAPPING SCREW (W/FLANGE) D4X20 (BLACK) 328-492 HOUSING (A).(B) SET 322-853 PUSHING BUTTON 328-484 DC-SPEED CONTROL SWITCH 328-480 LEVER (B) 328-490 BATTERY TERMINAL ASS’Y HITACHI LABEL 321-918 HOOK ASS’Y (W/LIGHT) INCLUD. 66, 68 321-672 TAPPING SCREW D2X6 326-276 LEVER (A) 320-288 V-LOCK NUT M5 306-952...
  • Page 50 OPTIONAL ACCESSORIES DH 18DMR ITEM CODE NO. DESCRIPTION REMARKS USED 303-332 HAMMER DRILL CHUCK SET 13MM INCLUD. 602, 603 303-334 CHUCK HANDLE 303-335 RUBBER CAP 321-825 DRILL CHUCK AND ADAPTER SET INCLUD. 605, 606 303-623 CHUCK ADAPTER (G) (SDS PLUS) 321-814 DRILL CHUCK 13VLRB-D INCLUD.

This manual is also suitable for:

Dh 14dmrDh 18dmrDh 18dl

Table of Contents