Koki Holdings DS 18DEX Series Service Manual

18 v cordless driver drill

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PRODUCT NAME
18 V Cordless Driver Drill
DS 18DE, DS 18DEX
Models
CONTENTS
TROUBLESHOOTING GUIDE -------------------------------------------------------------------------------------------- 1
REPAIR GUIDE ---------------------------------------------------------------------------------------------------------------- 2
1. Precautions on disassembly and reassembly ----------------------------------------------------------- 2
• Disassembly --------------------------------------------------------------------------------------------------- 2
• Reassembly --------------------------------------------------------------------------------------------------- 6
• Checking after reassembly ------------------------------------------------------------------------------- 14
• Tightening torque -------------------------------------------------------------------------------------------- 14
• Type of silicone rubber ------------------------------------------------------------------------------------- 14
• Lubrication points and type of lubricant ---------------------------------------------------------------- 15
• No-load current ---------------------------------------------------------------------------------------------- 15
• Wiring diagram ----------------------------------------------------------------------------------------------- 16
2. Precautions on disassembly and reassembly of the charger ---------------------------------------- 16
DS 18DE with BSL 1850MA battery attached
*: Designed for operating in the USA and Canada only
CONFIDENTIAL
*
Overseas Sales Management Dept.
Dec. 2022
D
Page

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Summary of Contents for Koki Holdings DS 18DEX Series

  • Page 1: Table Of Contents

    CONFIDENTIAL Dec. 2022 PRODUCT NAME 18 V Cordless Driver Drill DS 18DE, DS 18DEX Models *: Designed for operating in the USA and Canada only Page CONTENTS TROUBLESHOOTING GUIDE -------------------------------------------------------------------------------------------- 1 REPAIR GUIDE ---------------------------------------------------------------------------------------------------------------- 2 1. Precautions on disassembly and reassembly ----------------------------------------------------------- 2 •...
  • Page 2: Troubleshooting Guide

    TROUBLESHOOTING GUIDE Trouble Possible cause Checking method Corrective action Motor does • Faulty connection • Check for connection between the DC- • Insert the not run. between switch speed control switch and the connector connector cable and connector cable. (See “1. Reassembly of the properly.
  • Page 3: Repair Guide

    REPAIR GUIDE WARNING: Always remove the battery from the main body before starting repair or maintenance work. Because the tool is cordless, inadvertently activating the switch with the battery left in the main body will start the motor rotating unexpectedly, and could cause serious injury.
  • Page 4 4. Removal of the drill chuck (1) Clamp the width-across-flats portion of the J-387 spindle lock jig (Code No. 370146) by using a vise. Insert the Spindle [9] into the square hole of the J-387 spindle lock jig. Fully open the jaws of the Drill Chuck [2] and turn the Hexalobula Screw (Left Hand) M6 [1] clockwise to remove it.
  • Page 5 6. Removal of the rotor pinion ass’y The Rotor Pinion Ass’y [30] has strong magnetic force. Firmly hold the stator (core) of the Stator Controller Ass’y [29] and slowly push the ball bearing (opposite to the pinion) of the Rotor Pinion Ass’y [30] in “A” direction as shown in the figure below.
  • Page 6 7. Disassembly of the power supply unit (1) Peel silicone off the connector of the DC-Speed Control Switch [39] with a flat-blade screwdriver. To remove the connector cable of the Stator Controller Ass’y [29], pull the connector cable lightly in "A" direction while pressing the claw of the connector.
  • Page 7: Reassembly

    Reassembly Generally perform reassembly by reversing the disassembly procedure. However, special attention should be given to the following items. 1. Reassembly of the power supply unit and its vicinity (1) Insert the Battery Terminal [40] into the Stator Controller Ass’y [29] until the faston terminal clicks into place.
  • Page 8 • Reassembly of the power supply unit and its vicinity (1) [29] [39] Push in the connector lightly. Connector Internal wire (black) Internal wire (white) Internal wire (red) Internal wire ass’y Connector cable LED light Controller ****DS 18DE** Check whether black oxide or separated plating is found on the contacts or not.
  • Page 9 • Reassembly of the power supply unit and its vicinity (2) Internal wire guide groove Fit the protrusion of the direction selector lever on the top of the DC-Speed Control Switch [39] into the hole of the Pushing Button [37]. Insert the internal wire ass’y into the internal wire guide groove first, then [39]...
  • Page 10 2. Reassembly of the gear unit (1) Reassembly of the clutch mechanism • Apply an appropriate amount of grease to the Spindle [9] according to “Lubrication points and type of lubricant” on page 15. • Mount the Spindle [9] to the Gear Case [11] and support the Gear Case [11]. Use the J-392 BB. press fit jig (Code No.
  • Page 11 • Mounting the nut [11] Concave portion (2 places) Mount the Nut [6] and rotate it a half turn clockwise. • Mounting the click spring Convex portion [11] Groove • Mounting clutch dial (S) Grooves Ribs Grooves Ribs -10-...
  • Page 12 (4) Reassembly of the hand-clamping mechanism Mount Washer (B) [13], Lock Ring [14] and four Rollers [15] in the Gear Case [11] in this order. NOTE: Fit the convex portions of the Lock Ring [14] in the concave portions of the Gear Case [11]. •...
  • Page 13 • After mounting the Shift Dog [20], insert Needle Roller (A) Set D2.2 (2 pcs.) [12] into the Gear Case [11]. • Inserting needle roller (A) set into the gear case [12] [11] Holes for [12] (2 places) • Fit the convex portion of Washer (B) [27] into the concave portion of the Gear Case [11], and then turn Washer (B) [27] clockwise viewing from the rotor side until it contacts the Gear Case [11].
  • Page 14 (4) Check that the protrusion of the direction selector lever of the DC-Speed Control Switch [39] is correctly put in the hole of the Pushing Button [37]. (5) Fit the Shift Arm [10] in the groove of the Shift Knob [32] positioning the "2" marking on the Shift Knob [32] at the rear.
  • Page 15: Checking After Reassembly

    Checking after reassembly After reassembly, install the battery and check for operation of each component as follows. (1) Checking for lighting of the LED light Check that the LED light turns on while pulling the switch and automatically turns off in about ten seconds when you release your finger from the switch.
  • Page 16: Lubrication Points And Type Of Lubricant

    Lubrication points and type of lubricant Apply an appropriate amount of grease to the following portions. MOLUB-ALLOY 777-1 • Tooth surface of Planet Gear (C) Set [19] and five needle rollers on the Carrier [18] that support Planet Gear (C) Set [19] •...
  • Page 17: Wiring Diagram

    Wiring diagram [32] • Wiring diagram "1" indication "2" indication [29] [30] [37] [39] Internal wires (red, white, and black) Connector cable Internal wire ass’y Controller LED light [44] (Model DS 18DE only) [40] • Connecting diagram Sensor PCB ass’y Black White Black...

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Ds 18de

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