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Hitachi WH 14DBDL Service Manual
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Hitachi WH 14DBDL Service Manual

14.4 / 18 v cordless impact driver/wrench
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PRODUCT NAME
Hitachi 14.4 / 18 V Cordless Impact Driver
WH 14DBDL, WH 18DBDL
Models
Hitachi 14.4 / 18 V Cordless Impact Wrench
WR 14DBDL, WR 18DBDL
Models
CONTENTS
TROUBLESHOOTING GUIDE ---------------------------------------------------------------------------------------------- 1
1. Troubleshooting and Repair ----------------------------------------------------------------------------------- 1
REPAIR GUIDE ----------------------------------------------------------------------------------------------------------------- 2
1. Precautions on disassembly and reassembly ------------------------------------------------------------ 2
STANDARD REPAIR TIME (UNIT) SCHEDULES ------------------------------------------------------------------- 19
[WH 18DBDL]
LIST Nos.
WH 14DBDL: H886
WH 18DBDL: H887
WR 14DBDL: H884
WR 18DBDL: H885
May. 2011
[WR 18DBDL]
International Sales Division
Page
W

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Summary of Contents for Hitachi WH 14DBDL

  • Page 1: Table Of Contents

    WH 14DBDL: H886 WH 18DBDL: H887 WR 14DBDL: H884 WR 18DBDL: H885 May. 2011 PRODUCT NAME Hitachi 14.4 / 18 V Cordless Impact Driver WH 14DBDL, WH 18DBDL Models Hitachi 14.4 / 18 V Cordless Impact Wrench WR 14DBDL, WR 18DBDL Models...

  • Page 2: Troubleshooting Guide

    TROUBLESHOOTING GUIDE 1. Troubleshooting and Repair Symptom Possible cause Troubleshooting Repairing • Insufficient • Check the connection of flat cable (B). • Securely connect No motor connection of flat (See [1. Reassembly of the Wiring flat cable (B). motion cable (B) of switch Ass'y] on page 5.) •...
  • Page 3 Symptom Possible cause Troubleshooting Repairing • Controller failure • Visually check the PCB surface (for • Replace the No speed-up dust, water, and drop-caused controller. (Speed change damage). disabled) • Insufficient • Check the flat cable (B) connection. • Securely connect connection of (See [1.

  • Page 4: Repair Guide

    1. Precautions on Disassembly and Reassembly Numbers enclosed in [Bold] and <Bold> correspond to item numbers in the Parts Lists and exploded assembly diagrams of these models. ( [Bold] : WH 14DBDL and WH 18DBDL, <Bold> : WR 14DBDL and WR 18DBDL) Disassembly 1.
  • Page 5 3. Removal of the Housing (A). (B) Set (1) Remove the nine Tapping Screws (W/Flange) D4 x 20 (Black) [39]<36>. You can detach Housing (B) of the Housing (A),(B) Set [26]<23> and Strap (Black) [33]<30>. (2) You can remove the Hammer Case [6A]<2> and hammer assembly, Inner Cover [24]<21>, Rotor Pinion [25]<22>, Stator FET PCB [37A]<34>, and DC-Speed Control Switch [35]<32>...
  • Page 6 5. Disassembly of the Stator FET PCB and Rotor Pinion (1) The Rotor Pinion [25]<22> has a strong magnetic force. Securely support the Inner Cover [24]<21> and pull out the Stator from the Stator FET PCB [37A]<34> in the direction of (B). Fig.3 •...
  • Page 7 7. Disassembly of the Wiring Ass’y (1) Remove the two Machine Screws (W/Sp. Washer) M3 x 5 [38]<35> that fasten the terminals of lead wires (red and black) of the Stator FET PCB [37A]<34> and DC-Speed Control Switch [35]<32>. (2) Scrape away silicon grease on the connector of the DC-Speed Control Switch [35]<32> with the edge of a flat-edge screwdriver or similar tool, slowly pull up the connector zip and gradually pull out flat cable (B) of the Controller [34]<31>.
  • Page 8 Reassembly Notices on reassembly: For reassembly, reverse the disassembly steps but note the following: 1. Reassembly of the Wiring Ass’y (1) Reconnect the DC-Speed Control Switch [35]<32>, Controller [34]<31>, and Stator FET PCB [37A]<34> according to the wiring diagram when replacing those components. (2) Note the following when connecting flat cable (B) to the connector of the DC-Speed Control Switch [35]<32>.
  • Page 9 Fig.6 • Reassembly of the power supply and its related parts Wiring diagram Stator FET PCB [37A]<34> Lead wire (black) Lead wire (red) Machine Screw (W/Sp. Washer) M3 x 5 [38]<35> LED light DC-Speed Control Switch [35]<32> Connector cable (A) Flat cable (B) Connector cable (A) Pull up...
  • Page 10 Fig.7 • Reassembly of the power supply and its related parts Thread lead wires through the ribs of housing (A). Lead wire (black) Lead wire (red) Fig.8 • Reassembly of the power supply and its related parts Push connector cable and lead wires into Push lead wires into the lead wire the lead wire threading grooves.
  • Page 11 2. Mounting the mechanical parts (1-1) Model WH 14DBDL / WH 18DBDL Load 28 Steel Balls D3.175 [11]<8> in the Hammer [10A]<7A> and then reassemble Washer (J) [12]<9>, Hammer Spring (H) [13A]/Hammer Spring (F) <10>, Washer (S) [14]<11>, and the Spindle [16]<13>...
  • Page 12 3. Reassembly of the Housing (1) Bond Damper (A) [23]<20> to housings (A) and (B) with adhesives before remounting parts on housing (A). (Fit the groove of Damper (A) [23]<20> to the rib of the housing.) Apply silicon rubber (ThreeBond 1211) to the specified points in the figure. (2) Assemble the hammer assembly, Hammer Case [6A]<2>, Inner Cover [24]<21>...
  • Page 13 Fig.11 • Reassembly of the Housing (A),(B) Set Make sure the Hammer Case [6A]<2> is securely fitted to housing (A). Hammer Case [6A]<2> Fit the LED light to the boss of the Hammer Case [6A]<2>. Detent boss Make the Hammer Case [6A]<2> detent touch the housing here.
  • Page 14 Fig.12 • Reassembly of the Housing (A),(B) Set Capacitor Packing [32]<29> Packing [32]<29> Lock Nut M4 (Black) [31]<28> Strap (Black) [33]<30> insertion boss 4. Reassembly of Exterior Parts (1) Place the Front Cap [5]<1> over the assembled housing. Make sure the LED light PCB is within the LED holder, and then fit the depressed portion of the LED holder to the boss of the Hammer Case [6A]<2>.
  • Page 15 5. Mounting Guide Sleeve (D) (Models WH 14DBDL and WH 18DBDL) (1) Put two Steel Balls D3.5 [7] into the hole of Anvil Fig.14 • Reassembly of the guide sleeve (C) [8A], reassemble Guide Sleeve (D) [4], Guide Spring (D) [3], and Washer (D) [2] in this...
  • Page 16 No-load current No-load current WH 14DBDL: 3.5A ± 1.0A (DC 15.8V [equivalent to voltage of a fully charged battery]) WH 18DBDL: 2.5A ± 1.0A (DC 19.8V [equivalent to voltage of a fully charged battery]) WR 14DBDL: 3.5A ± 1.0A (DC 15.8V [equivalent to voltage of a fully charged battery]) WR 18DBDL: 3.0A ±...
  • Page 17 Connecting Diagram • Wiring diagram Stator FET PCB [37A]<34> Push LED light lead wire into the lead wire groove. Push connector cable and lead wire into the lead wire threading Pushing Button (B) [36]<33> groove. Push connector cable into the lead wire threading groove.
  • Page 18 Compatibility Almost all components of the Models WH 14DBDL, WH 18DBDL, WR 14DBDL and WR 18DBDL are common and sharable. However, some parts are not interchangeable as listed below. Do not mix these parts up for disassembly and reassembly. Part name...

  • Page 19: Precautions On Disassembly And Reassembly Of Battery Charger

    Part name WH 14DBDL WH 18DBDL WR 14DBDL WR 18DBDL Stator FET PCB 805D 804C 204B 203A Symbol on Symbol on Symbol on Symbol on Stator FET PCB Stator FET PCB Stator FET PCB Stator FET PCB [37A]<34> [37A]<34> [37A]<34>...

  • Page 20: Standard Repair Time (Unit) Schedules

    STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL 60 min. Fixed Work Flow WH 14DBDL Hook WH 18DBDL Housing (A). (B) Set Inner Cover Rotor Pinion Controller DC-Speed Control Switch Stator FET PCB General Assembly Hammer Hammer Case Guide Spring (D)
  • Page 21 Variable MODEL 60 min. Fixed Work Flow WR 14DBDL Hook WR 18DBDL Housing (A). (B) Set Inner Cover Rotor Pinion Controller DC-Speed Control Switch Stator FET PCB General Assembly Hammer Hammer Case Anvil (D) Ass'y Steel Ball Ring Gear (E) D3.175 Hammer Spring (F)
  • Page 22 LIST NO. H886 CORDLESS IMPACT DRIVER 2011 · 5 · 12 Model WH 14DBDL (E2)
  • Page 23 PARTS WH 14DBDL ITEM CODE NO. DESCRIPTION REMARKS USED 330-619 RETAINING RING 330-856 WASHER (D) 331-284 GUIDE SPRING (D) 322-717 GUIDE SLEEVE (D) 332-198 FRONT CAP 333-745 HAMMER CASE 319-535 STEEL BALL D3.5 (10 PCS.) 333-744 ANVIL (D) 333-743 ANVIL (C)
  • Page 24 STANDARD ACCESSORIES WH 14DBDL ITEM CODE NO. DESCRIPTION REMARKS USED CHARGER (MODEL UC 18YRSL) CHARGER (MODEL UC 18YML2) 330-592 CASE 329-897 BATTERY COVER OPTIONAL ACCESSORIES OPTIONAL ACCESSORIES ITEM ITEM CODE NO. CODE NO. DESCRIPTION REMARKS USED USED 321-823 DRILL CHUCK AND ADAPTER SET INCLUD.
  • Page 25 WH 14DBDL ITEM CODE NO. DESCRIPTION REMARKS USED - 4 - Printed in Japan 5 - 11 *ALTERNATIVE PARTS (110512N)
  • Page 26 LIST NO. H887 CORDLESS IMPACT DRIVER 2011 · 5 · 12 Model WH 18DBDL (E2)
  • Page 27 PARTS WH 18DBDL ITEM CODE NO. DESCRIPTION REMARKS USED 330-619 RETAINING RING 330-856 WASHER (D) 331-284 GUIDE SPRING (D) 322-717 GUIDE SLEEVE (D) 332-198 FRONT CAP 333-745 HAMMER CASE 319-535 STEEL BALL D3.5 (10 PCS.) 333-744 ANVIL (D) 959-154 STEEL BALL D5.556 (10 PCS.) 333-748 HAMMER 959-148...
  • Page 28 STANDARD ACCESSORIES WH 18DBDL ITEM CODE NO. DESCRIPTION REMARKS USED CHARGER (MODEL UC 18YRSL) CHARGER (MODEL UC 18YML2) 330-592 CASE 329-897 BATTERY COVER OPTIONAL ACCESSORIES OPTIONAL ACCESSORIES ITEM ITEM CODE NO. CODE NO. DESCRIPTION REMARKS USED USED 321-823 DRILL CHUCK AND ADAPTER SET INCLUD.
  • Page 29 WH 18DBDL ITEM CODE NO. DESCRIPTION REMARKS USED - 4 - Printed in Japan 5 - 11 *ALTERNATIVE PARTS (110512N)
  • Page 30 LIST NO. H884 CORDLESS IMPACT WRENCH 2011 · 5 · 12 Model WR 14DBDL (E2)
  • Page 31 PARTS WR 14DBDL ITEM ITEM CODE NO. CODE NO. DESCRIPTION REMARKS USED USED 332-198 FRONT CAP 332-200 HAMMER CASE 324-257 PIN RETAINER (B) 332-196 ANVIL (D) ASS'Y INCLUD. 3, 5 324-256 PLUNGER (B) 959-154 STEEL BALL D5.556 (10 PCS.) 333-749 HAMMER 959-148 STEEL BALL D3.175 (10 PCS.)
  • Page 32 STANDARD ACCESSORIES WR 14DBDL ITEM CODE NO. DESCRIPTION REMARKS USED CHARGER (MODEL UC 18YRSL) CHARGER (MODEL UC 18YML2) 330-592 CASE 329-897 BATTERY COVER OPTIONAL ACCESSORIES OPTIONAL ACCESSORIES ITEM ITEM CODE NO. CODE NO. DESCRIPTION REMARKS USED USED 873-537 SOCKET PIN 873-187 O-RING (J1SW1516) 991-481...
  • Page 33 WR 14DBDL ITEM CODE NO. DESCRIPTION REMARKS USED - 4 - Printed in Japan 5 - 11 *ALTERNATIVE PARTS (110512N)
  • Page 34 LIST NO. H885 CORDLESS IMPACT WRENCH 2011 · 5 · 12 Model WR 18DBDL (E2)
  • Page 35 PARTS WR 18DBDL ITEM ITEM CODE NO. CODE NO. DESCRIPTION REMARKS USED USED 332-198 FRONT CAP 332-200 HAMMER CASE 324-257 PIN RETAINER (B) 332-196 ANVIL (D) ASS'Y INCLUD. 3, 5 324-256 PLUNGER (B) 959-154 STEEL BALL D5.556 (10 PCS.) 333-749 HAMMER 959-148 STEEL BALL D3.175 (10 PCS.)
  • Page 36 STANDARD ACCESSORIES WR 18DBDL ITEM CODE NO. DESCRIPTION REMARKS USED CHARGER (MODEL UC 18YRSL) CHARGER (MODEL UC 18YML2) 330-592 CASE 329-897 BATTERY COVER OPTIONAL ACCESSORIES OPTIONAL ACCESSORIES ITEM ITEM CODE NO. CODE NO. DESCRIPTION REMARKS USED USED 873-537 SOCKET PIN 873-187 O-RING (J1SW1516) 991-481...
  • Page 37 WR 18DBDL ITEM CODE NO. DESCRIPTION REMARKS USED - 4 - Printed in Japan 5 - 11 *ALTERNATIVE PARTS (110512N)

This manual is also suitable for:

Wr 14dbdlWh 18dbdlWr 18dbdl