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Hitachi CB 18DBL Service Manual
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Hitachi CB 18DBL Service Manual

Hitachi CB 18DBL Service Manual

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PRODUCT NAME
Hitachi 18 V Cordless Band Saw
CB 18DBL
Model
CONTENTS
REPAIR GUIDE ---------------------------------------------------------------------------------------------------------------- 1
1. Precautions on disassembly and reassembly ------------------------------------------------------------ 1
STANDARD REPAIR TIME (UNIT) SCHEDULES ------------------------------------------------------------------- 14
LIST No.
CB 18DBL: K803
Jul. 2015
Page
Overseas Sales Division
C

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Summary of Contents for Hitachi CB 18DBL

  • Page 1 LIST No. CB 18DBL: K803 Jul. 2015 PRODUCT NAME Hitachi 18 V Cordless Band Saw CB 18DBL Model CONTENTS Page REPAIR GUIDE ---------------------------------------------------------------------------------------------------------------- 1 1. Precautions on disassembly and reassembly ------------------------------------------------------------ 1 2. Precautions on disassembly and reassembly of the battery charger ----------------------------- 13...

  • 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 the exploded assembly diagrams for the Model CB 18DBL. Disassembly First, be sure to remove the saw blade from the main body to prevent damage to the cutting edges of the saw blade and avoid personal injury due to the saw blade.
  • Page 3 2. Removal of blade pulley (A) and blade pulley rubber (1) Loosen the Bolt M6 x 16 [65] and remove the Spring Washer M6 [31], Washer (A) [64] and Blade Pulley (A) [72] from Pulley Shaft (A) [23]. (2) Remove the Blade Pulley Rubber [70] from Blade Pulley (A) [72]. 3.
  • Page 4 4. Disassembly of bearing holder (A) ass'y (1) Loosen the Screw D4 x 16 [8] and the Screw D4 x 20 [76]. Remove Cover Holder (A) [79] and Bearing Holder (A) Ass'y [61] from the Frame [40]. (2) Loosen the two Bearing Pins (B) [55] with a flat-blade screwdriver and remove the two Spring Washers M6 [54], two Bolt Washers M6 [53], four Ball Bearings 606VV [52] and two Washers M5 [51] from Bearing Holder (A) [62].
  • Page 5 6. Removal of blade pulley covers (A) and (B) (1) Remove the two Retaining Rings (E-type) for D3 Shaft [68] with long-nose pliers and pull out the two Pins D4 [67] from the Frame [40]. (2) Remove Blade Pulley Cover (A) [74] and Blade Pulley Cover (B) [73] from the Frame [40]. (3) Remove the O-rings [77] from Blade Pulley Cover (A) [74] and Blade Pulley Cover (B) [73].
  • Page 6 9. Disassembly of the rotor pinion set and gear box ass'y (1) After disassembly of the Housing Set [12], remove the Stator FET PCB Ass'y [13], Rotor Pinion Set [14] and the Gear Box Ass'y [28] from the Housing Set [12]. (2) Pull out the Rotor Pinion Set [14] from the Gear Box Ass'y [28] and then pull out the Rotor Pinion Set [14] from the stator of the Stator FET PCB [13].
  • Page 7 10. Removal of the stator FET PCB (1) After disassembly of the Handle Set [2] and Housing Set [12], remove the Stator FET PCB [13], Rotor Pinion Set [14], and Gear Box Ass'y [28] from the Housing Set [12]. (2) Pull out the Rotor Pinion Set [14] from the Gear Box Ass'y [28] and then pull out the Rotor Pinion Set [14] from the stator of the Stator FET PCB [13].
  • Page 8 11. Removal of the tension lever (1) Loosen the Screw M6 x 16 [30] and remove the Tension Lever [33], Spring Washer M6 [31] and Bolt Washer M6 [32] from the Lever Shaft [37]. (2) Loosen and remove the four Screws D4 x 16 [8] to remove the Tension Lever Holder [34] from the Frame [40].
  • Page 9 Reassembly Reassembly can be accomplished by following the disassembly procedures in reverse. However, special attention should be given to the following items. 1. Reassembly of bearing holder (A) ass'y (1) Coat Threebond 1401B to the threaded portions of two Bearing Pins (B) [55]. (2) Insert a 0.6-mm thickness gauge between the Ball Bearings 606VV [52] and lightly press the Ball Bearings 606VV [52] each other.
  • Page 10 5. Reassembly of the power supply unit and stator FET PCB (1) Mount the Dial [10] to the volume PCB ass'y in the Stator FET PCB [13] according to the following procedure. a) Apply 0.5 gram of NPC SEP-3A grease to the circumference of the O-ring [11] and fit the O-ring [11] to the Dial [10].
  • Page 11 (4) When mounting the Stator FET PCB [13] to the Handle Set [2], firmly fit the battery terminal, controller and LED holder of the Stator FET PCB [13] into the mounting grooves of the Handle Set [2] so as to prevent the parts from coming off.
  • Page 12 Lubrication points and type of lubricant Apply two grams of Molub Alloy 777-1 grease to the following parts in the Gear Box Ass'y [28]. • Each gear tooth flank of Planet Gear (A) Set (6 pcs.) [20], Pinion (B) [21] and Ring Gear [22] •...
  • Page 13 Checking after reassembly Check the following after reassembly. (1) Check that the Knob [6] works smoothly and the Trigger [3] can be pulled securely. Check that the Knob [6] is released by releasing the Trigger [3]. (2) Turn on the Switch [4] and check that the LED light goes on. Then install a fully charged battery and press the remaining battery level indicator switch.

  • Page 14: Precautions On Disassembly And Reassembly Of The Battery Charger

    Adjustment of the band saw blade protrusion length (1) Turn the Screw M5 x 10 [47] clockwise until it contacts the Protection Plate [43]. Then turn the Screw M5 x 10 [47] counterclockwise 270 degrees and tighten the Lock Nut M5 [48] to fix the Screw M5 x 10 [47].

  • Page 15: Standard Repair Time (Unit) Schedules

    STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL 60 min. Fixed Work Flow Handle Set Trigger CB 18DBL Switch Knob Dial O-ring General assembly Housing Set Stator FET Gear Case Frame Rotor Cover Pinion Set Retaining Planet Gear Ball Bearing Ring for...
  • Page 16 LIST NO. CORDLESS BAND SAW 2015 · 7 · 9 Model CB 18DBL (E1)
  • Page 17 PARTS CB 18DBL ITEM DESCRIPTION REMARKS CODE NO. CODE NO. USED 336385 INCLUD.502 BATTERY BSL 1850(EUROPE,AUS,NZL)(2 PCS.) 338953 HANDLE SET 338899 TRIGGER 338900 SWITCH 336650 SPRING 339247 KNOB NAME PLATE 307811 TAPPING SCREW (W/FLANGE) D4 X 16 (BLACK) 307887 MACHINE SCREW (W/WASHER) M3.5 X 6...
  • Page 18 PARTS CB 18DBL ITEM DESCRIPTION REMARKS CODE NO. USED 949424 WASHER M5 (10 PCS.) 606ZZM BALL BEARING 606VV 949432 BOLT WASHER M6 (10 PCS.) 949455 SPRING WASHER M6 (10 PCS.) 322681 BEARING PIN (B) 322680 BEARING PIN 323210 BOLT WASHER M4 (BLACK)

  • Page 19: Standard Accessories

    STANDARD ACCESSORIES CB 18DBL ITEM CODE NO. DESCRIPTION REMARKS USED 944458 HEX. BAR WRENCH 4MM 329897 BATTERY COVER 338954 CASE CHARGER (MODEL UC 18YFSL) 981828 SIDE HANDLE OPTIONAL ACCESSORIES ITEM CODE NO. DESCRIPTION REMARKS USED 338430 BAND SAW BLADE NO.2 14TPI (3 PCS.)