Hitachi WH 14DBDL Service Manual Download

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[WH 18DBDL]

[WR 18DBDL]

Hitachi 14.4 / 18 V Cordless Impact Driver

Models

WH 14DBDL, WH 18DBDL

Hitachi 14.4 / 18 V Cordless Impact Wrench

Models

WR 14DBDL, WR 18DBDL

LIST Nos.

WH 14DBDL: H886

WH 18DBDL: H887

WR 14DBDL: H884

WR 18DBDL: H885

May. 2011

International Sales Division

PRODUCT NAME

TROUBLESHOOTING GUIDE ---------------------------------------------------------------------------------------------- 1

1. Troubleshooting and Repair ----------------------------------------------------------------------------------- 1

REPAIR GUIDE

----------------------------------------------------------------------------------------------------------------- 2

1. Precautions on disassembly and reassembly ------------------------------------------------------------ 2
2. Precautions on disassembly and reassembly of battery charger ---------------------------------- 18

STANDARD REPAIR TIME (UNIT) SCHEDULES ------------------------------------------------------------------- 19

CONTENTS

Page

Summary of Contents for WH 14DBDL

Page 1: ... LIST Nos WH 14DBDL H886 WH 18DBDL H887 WR 14DBDL H884 WR 18DBDL H885 May 2011 International Sales Division W PRODUCT NAME TROUBLESHOOTING GUIDE 1 1 Troubleshooting and Repair 1 REPAIR GUIDE 2 1 Precautions on disassembly and reassembly 2 2 Precautions on disassembly and reassembly of battery charger 18 STANDARD REPAIR TIME UNIT SCHEDULES 19 CONTENTS Page ...

Page 2: ...ntroller Poor adhesion of rotor pinion magnet Check whether the magnet is securely bonded to the rotor pinion Replace the rotor pinion Insufficient connection of flat cable B of switch Check the connection of flat cable B See 1 Reassembly of the Wiring Ass y on page 5 Securely connect flat cable B 1 No motor motion High Low indicator ON Insufficient connection of connector cables A and B Check con...

Page 3: ...ch connector state for corro sion dust water and other contaminant Replace the DC Speed Control Switch and the controller 3 No speed up Speed change disabled Switch contact failure When flat cable B is not defective Replace the DC Speed Control Switch 4 No switching between High and Low Controller failure Operate the High Low selector switch and confirm its operation Replace the controller 5 No sw...

Page 4: ...n this order with a small flat head screwdriver Do not work too quickly Be careful not to let Retaining Ring 1 pop up Be careful not to lose the two Steel Balls D3 5 7 in the opening of Anvil D 8A Anvil D Ass y 4 Fig 1 1 Secure the body align Retaining Ring 1 opening to Anvil D 8A Anvil D Ass y 4 notch and put screwdriver edge aslant here Fig 1 2 Press down Washer D 2 with the small flat blade scr...

Page 5: ...rest Model J 297 Push down the end of the Spindle 16 13 with a hand press or similar tool to compress Hammer Spring H 13A Hammer Spring F 10 and then take out the Stopper B 15A 12A with a small flat head screwdriver or similar tool in this state Release the hand press 2 Remove the hammer assembly from the washer S rest hold the end surface of the Spindle 16 13 push down one of the end tubs of the ...

Page 6: ... Rotor Pinion and Inner Cover 1 Hold the Inner Cover 24 21 to keep it away from the fan of the Rotor Pinion 25 22 and then push down the end of the Rotor Pinion 25 22 to detach it 2 Detach Ring Gear E 19A 16 and the O Ring S 42 20 17 from the Inner Cover 24 21 and then demount Damper A 23 20 with a small flat head screwdriver Be careful not to damage the O Ring S 42 20 17 Stator FET PCB 37A 34 Sta...

Page 7: ...y pull out flat cable B of the Controller 34 31 3 Cut open the SUMITUBE R that covers the joint of connector cables A and B and then slowly pull out the cable from the connector NOTE Be careful not to damage the connector cable when cutting open the SUMITUBE R Stator FET PCB 37A 34 Connector cable A Lead wire red Machine Screw W Sp Washer M3 x 5 38 35 DC Speed Control Switch 35 32 LED light Connec...

Page 8: ...nnector cables A and B to the connectors until the wires hit the innermost ends After connecting connector cables A and B cover the joint with a SUMITUBE R Use a heat gun to heat up the SUMITUBE R 4 Securely insert the lead wires of the Stator FET PCB 37A 34 and DC Speed Control Switch 35 32 into the lead wire threading groove of housing A so that the wires will not get caught on the housings 5 Se...

Page 9: ...ector cable A Cover connector joint with SUMITUBE R B B A C Flat cable B Controller 34 31 Apply silicon grease to the whole connector R B Y R Y B R B Y COLOR R B Y COLOR G W L COLOR R B Y COLOR G W L Connector Cable A Connector Cable B R B Y R B Y R B Y G W L G L W G W L G W L G W L G W L Fig 6 Reassembly of the power supply and its related parts Wiring diagram Color combinations of Connector Cabl...

Page 10: ...e power supply and its related parts Push connector cable and lead wires into the lead wire threading grooves Lead wire threading grooves Push connector cable into the lead wire threading grooves Screw boss Avoid flat cable B from being pressed by screw boss DC Speed Control Switch 35 32 Pushing Button B 36 33 Push lead wires into the lead wire threading grooves ...

Page 11: ...ring H 13A Hammer Spring F 10 fit the Stopper B 15A 12A to the spindle shaft and then release the hand press 5 Mount the two Idle Gear Sets 17 14 and two Needle Rollers 18 15 on the Spindle 16 13 and then insert Washer E 21 18 6 Press fit the Ball Bearing 6901VVCMPS2L 22 19 to the Inner Cover 24 21 insert two Dampers A 23 20 according to the shape of the Inner Cover 24 21 and then fit the O Ring S...

Page 12: ...gure when fitting the Hammer Case 6A 2 to the housing Make sure the Hammer Case 6A 2 is correctly set in the housing If the Hammer Case 6A 2 is not set in the preset grooves of the housing or the rib of the Inner Cover 24 21 is not perpendicular to the rib of the hammer case you must reassemble the component concerned The product is structured so that the Hammer Case 6A 2 does not move axially whe...

Page 13: ...er 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 Make the Hammer Case 6A 2 detent touch the housing here Detent boss Fig 11 Reassembly of the Housing A B Set ...

Page 14: ...ht is between the ribs of the Front Cap 5 1 when setting the Front Cap 5 1 in place 3 Insert the Hook 30 27 into the groove under the side of the Housing A B Set 26 23 and then tighten Truss Hd Screw M4 Black 29 26 to secure Do not turn Truss Hd Screw M4 Black 29 26 quickly Doing so may cause Lock Nut M4 Black 31 28 in the housing to run idle Slowly tighten Truss Hd Screw M4 Black 29 26 so that it...

Page 15: ...ween Anvil D 8A Anvil D Ass y 4 and Guide Sleeve D 4 MOLUB ALLOY 777 1 8 mm diameter hole of Anvil C 8A sliding section between Anvil D 8A Anvil D Ass y 4 and the metal and upper surface of the claw Two Steel Balls D5 556 9 6 Metal oil groove of Hammer Case 6A 2 Cam groove oil groove and claw of Hammer 10A 7A Cam groove and sliding section of Spindle 16 13 5 mm diameter hole of Idle Gear Set 2 pcs...

Page 16: ...ck indicators go on and off 5 Press the LED light switch and make sure the indicator goes on and off 6 Make sure the rotational direction of the anvil matches the direction of rotation made when you press the Pushing Button B 36 33 When you set the pushbutton B to the R position the anvil must rotate right clockwise as viewed from the rear side opposite to the anvil No load current WH 14DBDL 3 5A ...

Page 17: ...tor cable into the lead wire threading groove Push into the lead wire threading groove Push capacitor lead wire into the groove Do not let screw boss bite into flat cable B DC Speed Control Switch 35 32 Pushing Button B 36 33 Stator FET PCB 37A 34 DC Speed Control Switch 35 32 Stator FET PCB 37A 34 Controller 34 31 Connection diagram Connecting Diagram ...

Page 18: ...and reassembly Part name WH 14DBDL WH 18DBDL WR 14DBDL WR 18DBDL Hammer Hammer Spring Wire size φ 4 0 Wire size φ 3 5 Washer J 1 pc 2 pcs Hammer assembly Only one Washer J 12 9 for Steel Ball D3 175 11 8 of Hammer Spring H 13A Hammer Spring F 10 Same as the conventional product Two Washers J 12 9 for both upper and lower ends of Hammer Spring H 13A Hammer Spring F 10 Compatibility Washer J 12 9 Wa...

Page 19: ...nd line 203A Controller Last digit of symbol on Controller 34 31 side A Last digit of symbol on Controller 34 31 side B Last digit of symbol on Controller 34 31 side C Last digit of symbol on Controller 34 31 side D 2 Precautions on Disassembly and Reassembly of Battery Charger Refer to the Technical Data and Service Manual for precautions on the disassembly and reassembly of the Models UC 18YRSL ...

Page 20: ...Hook Guide Spring D Guide Sleeve D Inner Cover Rotor Pinion Controller DC Speed Control Switch Stator FET PCB Hammer Case Anvil D Ring Gear E Housing A B Set Hammer Steel Ball D3 175 Hammer Spring H Spindle Idle Gear Set Needle Roller Ball Bearing 6901VVCMPS2L STANDARD REPAIR TIME UNIT SCHEDULES ...

Page 21: ...DL WR 18DBDL General Assembly Hook Inner Cover Rotor Pinion Controller DC Speed Control Switch Stator FET PCB Hammer Case Anvil D Ass y Ring Gear E Housing A B Set Hammer Steel Ball D3 175 Hammer Spring F Spindle Idle Gear Set Needle Roller Ball Bearing 6901VVCMPS2L ...

Page 22: ...DBDL CORDLESS IMPACT DRIVER LIST NO H886 2011 5 12 E2 8A 501 503 1 2 3 4 5 6A 7 10A 11 12 13A 14 15A 16 17 18 19A 20 21 22 23 24 25 26 39 40 29 30 28 31 32 36 35 37A 38 34 33 41 9 32 31 502 42 34 35 37 38 43 43 44 ...

Page 23: ... 20 983 852 O RING S 42 1 21 319 911 WASHER E 1 22 690 1VV BALL BEARING 6901VVCMPS2L 1 23 324 230 DAMPER A 2 24 332 185 INNER COVER 1 25 332 188 ROTOR PINION 1 26 332 190 HOUSING A B SET 1 28 332 207 PANEL SHEET B 1 29 327 001 TRUSS HD SCREW M4 BLACK 1 30 330 666 HOOK 1 31 327 002 LOCK NUT M4 BLACK 2 32 330 854 PACKING 2 33 306 952 STRAP BLACK 1 34 332 206 CONTROLLER 1 35 332 187 DC SPEED CONTROL ...

Page 24: ...GNETIC HEX SOCKET 12MM 65L 1 608 996 179 NON MAGNETIC HEX SOCKET 13MM 65L 1 609 996 180 NON MAGNETIC HEX SOCKET 14MM 65L 1 610 996 185 NON MAGNETIC HEX SOCKET 15MM 65L 1 611 996 181 NON MAGNETIC HEX SOCKET 16MM 65L 1 612 996 182 NON MAGNETIC HEX SOCKET 17MM 65L 1 613 996 186 NON MAGNETIC HEX SOCKET 19MM 65L 1 614 996 197 HEX SOCKET LONG 21MM X 166L 1 615 996 184 BIT PIECE 1 616 987 575 CHUCK WRENC...

Page 25: ...WH 14DBDL DESCRIPTION REMARKS 4 Printed in Japan 5 11 110512N ALTERNATIVE PARTS NO USED CODE NO ITEM NO ...

Page 26: ...DBDL CORDLESS IMPACT DRIVER LIST NO H887 E2 2011 5 12 8A 501 503 1 2 3 4 5 6A 7 10A 11 12 13A 14 15A 16 17 18 19A 20 21 22 23 24 25 26 39 40 29 30 28 31 32 36 35 37A 38 34 33 41 9 42 34 35 37 38 32 31 502 43 43 44 ...

Page 27: ...ING S 42 1 21 319 911 WASHER E 1 22 690 1VV BALL BEARING 6901VVCMPS2L 1 23 324 230 DAMPER A 2 24 332 185 INNER COVER 1 25 332 188 ROTOR PINION 1 26 332 189 HOUSING A B SET 1 28 332 207 PANEL SHEET B 1 29 327 001 TRUSS HD SCREW M4 BLACK 1 30 330 666 HOOK 1 31 327 002 LOCK NUT M4 BLACK 2 32 330 854 PACKING 2 33 306 952 STRAP BLACK 1 34 332 205 CONTROLLER 1 35 332 187 DC SPEED CONTROL SWITCH 1 36 324...

Page 28: ...GNETIC HEX SOCKET 12MM 65L 1 608 996 179 NON MAGNETIC HEX SOCKET 13MM 65L 1 609 996 180 NON MAGNETIC HEX SOCKET 14MM 65L 1 610 996 185 NON MAGNETIC HEX SOCKET 15MM 65L 1 611 996 181 NON MAGNETIC HEX SOCKET 16MM 65L 1 612 996 182 NON MAGNETIC HEX SOCKET 17MM 65L 1 613 996 186 NON MAGNETIC HEX SOCKET 19MM 65L 1 614 996 197 HEX SOCKET LONG 21MM X 166L 1 615 996 184 BIT PIECE 1 616 987 575 CHUCK WRENC...

Page 29: ...WH 18DBDL DESCRIPTION REMARKS 4 Printed in Japan 5 11 110512N ALTERNATIVE PARTS NO USED CODE NO ITEM NO ...

Page 30: ...R 14DBDL CORDLESS IMPACT WRENCH LIST NO H884 E2 2011 5 12 5 501 503 1 2 3 7A 8 9 10 11 12A 13 14 15 16 17 18 19 20 21 22 23 36 37 26 27 25 28 29 33 32 34 35 31 30 38 6 39 31 32 34 35 29 28 502 4 9 30 40 40 41 ...

Page 31: ...EARING 6901VVCMPS2L 1 20 324 230 DAMPER A 2 21 332 185 INNER COVER 1 22 332 188 ROTOR PINION 1 23 332 190 HOUSING A B SET 1 25 332 207 PANEL SHEET B 1 26 327 001 TRUSS HD SCREW M4 BLACK 1 27 330 666 HOOK 1 28 327 002 LOCK NUT M4 BLACK 2 29 330 854 PACKING 2 30 306 952 STRAP BLACK 1 31 333 362 CONTROLLER 1 32 332 187 DC SPEED CONTROL SWITCH 1 33 324 225 PUSHING BUTTON B 1 34 332 204 STATOR FET PCB ...

Page 32: ...7 955 138 HEX SOCKET ASS Y LONG 12MM X 52L 1 INCLUD 601 602 618 955 139 HEX SOCKET ASS Y LONG 13MM X 52L 1 INCLUD 601 602 619 955 140 HEX SOCKET ASS Y LONG 14MM X 52L 1 INCLUD 601 602 620 955 141 HEX SOCKET ASS Y LONG 17MM X 52L 1 INCLUD 601 602 621 955 149 HEX SOCKET ASS Y LONG 17MM X 75L 1 INCLUD 601 602 622 955 142 HEX SOCKET ASS Y LONG 19MM X 52L 1 INCLUD 601 602 623 955 150 HEX SOCKET ASS Y L...

Page 33: ...WR 14DBDL DESCRIPTION REMARKS 4 Printed in Japan 5 11 110512N ALTERNATIVE PARTS NO USED CODE NO ITEM NO ...

Page 34: ...R 18DBDL CORDLESS IMPACT WRENCH LIST NO H885 E2 2011 5 12 5 501 503 1 2 3 7A 8 9 10 11 12A 13 14 15 16 17 18 19 20 21 22 23 36 37 26 27 25 28 29 33 32 34 35 31 30 38 6 39 31 32 34 35 9 29 28 4 502 30 40 40 41 ...

Page 35: ...EARING 6901VVCMPS2L 1 20 324 230 DAMPER A 2 21 332 185 INNER COVER 1 22 332 188 ROTOR PINION 1 23 332 189 HOUSING A B SET 1 25 332 207 PANEL SHEET B 1 26 327 001 TRUSS HD SCREW M4 BLACK 1 27 330 666 HOOK 1 28 327 002 LOCK NUT M4 BLACK 2 29 330 854 PACKING 2 30 306 952 STRAP BLACK 1 31 333 360 CONTROLLER 1 32 332 187 DC SPEED CONTROL SWITCH 1 33 324 225 PUSHING BUTTON B 1 34 332 203 STATOR FET PCB ...

Page 36: ...7 955 138 HEX SOCKET ASS Y LONG 12MM X 52L 1 INCLUD 601 602 618 955 139 HEX SOCKET ASS Y LONG 13MM X 52L 1 INCLUD 601 602 619 955 140 HEX SOCKET ASS Y LONG 14MM X 52L 1 INCLUD 601 602 620 955 141 HEX SOCKET ASS Y LONG 17MM X 52L 1 INCLUD 601 602 621 955 149 HEX SOCKET ASS Y LONG 17MM X 75L 1 INCLUD 601 602 622 955 142 HEX SOCKET ASS Y LONG 19MM X 52L 1 INCLUD 601 602 623 955 150 HEX SOCKET ASS Y L...

Page 37: ...WR 18DBDL DESCRIPTION REMARKS 4 Printed in Japan 5 11 110512N ALTERNATIVE PARTS NO USED CODE NO ITEM NO ...

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