Koki Holdings CJ 90VST2 Service Manual

90 mm (3-1/2”) jig saw

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PRODUCT NAME
90 mm (3-1/2") Jig Saw
CJ 90VST2
Model
CONTENTS
REPAIR GUIDE ---------------------------------------------------------------------------------------------------------------- 1
1. Precautions on disassembly and reassembly ----------------------------------------------------------- 1
• Disassembly -------------------------------------------------------------------------------------------------- 1
• Reassembly -------------------------------------------------------------------------------------------------- 5
• Application of lubricant ------------------------------------------------------------------------------------- 6
• Tightening torque ------------------------------------------------------------------------------------------- 6
• Checking for insulating distance ------------------------------------------------------------------------ 7
• Insulation test ------------------------------------------------------------------------------------------------ 7
• No-load current ---------------------------------------------------------------------------------------------- 7
• Wiring diagram ---------------------------------------------------------------------------------------------- 7
CONFIDENTIAL
Overseas Sales Management Dept.
Oct. 2020
C

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Summary of Contents for Koki Holdings CJ 90VST2

  • Page 1: Table Of Contents

    CONFIDENTIAL Oct. 2020 PRODUCT NAME 90 mm (3-1/2”) Jig Saw CJ 90VST2 Model CONTENTS REPAIR GUIDE ---------------------------------------------------------------------------------------------------------------- 1 1. Precautions on disassembly and reassembly ----------------------------------------------------------- 1 • Disassembly -------------------------------------------------------------------------------------------------- 1 • Reassembly -------------------------------------------------------------------------------------------------- 5 • Application of lubricant ------------------------------------------------------------------------------------- 6 •...
  • Page 2: Repair Guide

    1. Precautions on disassembly and reassembly [Bold] numbers in the description below correspond to the item numbers in the parts list and exploded assembly diagram for the Model CJ 90VST2. Disassembly 1. Removal of the base and lever Loosen the Hex.
  • Page 3 2. Disassembly of housing (A).(B) set (1) Loosen two Tapping Screws (W/Flange) D4 x 20 (Black) [17] and remove the Grip Cover [15] from Housing (A). (B) Set [1]. (2) Loosen seven Tapping Screws (W/Flange) D4 x 20 (Black) [17] and remove housing (B) (the name plate is attached) of Housing (A).
  • Page 4 3. Disassembly of the plunger ass’y and blade holder ass’y (1) Pull out the D6 Pin [58] from the Gear Holder Ass’y [59] and remove Plunger Holder (A) [43] from the plunger ass’y. (2) Remove two Seal Lock Hex. Socket Hd. Bolts M3 x 6 [30] and remove the Plunger Cover [29]. Then remove Plunger (A) [44].
  • Page 5 4. Removal of the gear holder ass’y, armature ass’y, and change knob (1) Pull out Connecting Piece (A) [45] and Needle Bearing [46] from the Gear [48]. (2) Remove the Retaining Ring for D7 Shaft [47] at the tip of the spindle. (3) Remove the Gear [48], Balance Weight [49], Orbital Cam [50], and Washer (A) [35] in this order.
  • Page 6: Reassembly

    Reassembly Perform reassembly by reversing the disassembly procedure. However, special attention should be given to the following items. 1. Mounting the change knob Mount Spring (C) [39] and Steel Ball 5/32 [53] in the Change • Mounting the change knob Knob [54] according to the following steps.
  • Page 7: Application Of Lubricant

    3. Reassembly of housing (A).(B) set, gear holder, and plunger ass’y (1) Mount the parts from Armature Ass’y [23] through the plunger ass’y to the Gear Holder Ass’y [59]. Insert the Armature Ass’y [23] into the Stator Ass’y [27]. At this time, face the shear droop side of the Balance Weight [49] to the Orbital Cam [50].
  • Page 8: Checking For Insulating Distance

    Black or blue Black Stator Cable Tie [12] Connector 50092 [13] NOTE: The Ferrite Core [7] and the noise suppressor are provided only for the Model CJ 90VST2 destined for the U.K., Europe, Russia, South Africa, Turkey, Australia, and New Zealand.
  • Page 9 • Wiring diagram Controller [11] Trigger Switch [4] Ferrite Core [7] Cord [14] Controller (red) Cord (white or brown)
  • Page 10 CJ90VST2 Rev.1...
  • Page 11 ITEM CODE DESCRIPTION USED REMARKS 376483 HOUSING (A).(B) SET 376483M HOUSING (A).(B) SET FOR USA, CAN 305499 MACHINE SCREW (W/WASHER) M3.5 X 6 376462 INTERNAL WIRE ASS'Y (B) FOR UAE, THA, SIN, MAL, HKG 376485 TRIGGER SWITCH 376461 INTERNAL WIRE ASS'Y (A) FOR EUROPE, GBR, AUS, NAL, SAF, RUS, TUR, USA, CAN, IND 980063 TERMINAL...
  • Page 12 ITEM CODE DESCRIPTION USED REMARKS 376464 GEAR HOLDER ASS'Y INCLUD. 39, 51-54, 60, 61 983545 NEEDLE ROLLER 376465 ROLLER HOLDER 375857 MACHINE SCREW (W/WASHER) M4 X 5 321576 RUBBER BUSHING 339663 BASE LOCKER 372724 HEX. SOCKET HD. BOLT M5 X 18 STANDARD ACCESSORIES *501 337883 CASE...

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