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Hitachi H 45MEY Service Manual
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Hitachi H 45MEY Service Manual

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PRODUCT NAME
Hitachi Demolition Hammer
H 45MEY
Model
H 45ME
Model
CONTENTS
TROUBLESHOOTING GUIDE --------------------------------------------------------------------------------------------- 1
1. Troubleshooting and corrective action --------------------------------------------------------------------- 1
REPAIR GUIDE ---------------------------------------------------------------------------------------------------------------- 3
1. Precautions on disassembly and reassembly ----------------------------------------------------------- 3
STANDARD REPAIR TIME (UNIT) SCHEDULES ------------------------------------------------------------------ 16
LIST No.
H 45MEY: F435
H 45ME: F434
Jun. 2016
Page
Overseas Sales Division
H

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Summary of Contents for Hitachi H 45MEY

  • Page 1: Table Of Contents

    LIST No. H 45MEY: F435 H 45ME: F434 Jun. 2016 PRODUCT NAME Hitachi Demolition Hammer H 45MEY Model H 45ME Model CONTENTS Page TROUBLESHOOTING GUIDE --------------------------------------------------------------------------------------------- 1 1. Troubleshooting and corrective action --------------------------------------------------------------------- 1 REPAIR GUIDE ---------------------------------------------------------------------------------------------------------------- 3 1. Precautions on disassembly and reassembly ----------------------------------------------------------- 3...

  • Page 2: Troubleshooting Guide

    [Bold] numbers in the description below correspond to the item numbers in the parts list and exploded assembly diagram for the Model H 45MEY, {Bold} numbers to those for the Model H 45ME, and <Bold> numbers to the item numbers for both models.
  • Page 3 Problem Cause Check Corrective action • Improperly • Check the plug-in state of the • Firmly plug in the connected connector cable. connector cable. connector cable of (See “Reassembly of the the Panel [98]{95} power supply unit” on page 11.) •...

  • Page 4: Repair Guide

    (b) Remove the Bolt M6 x 25 <18> and detach the Cylinder Case <19> from the Crank Case [91]{88}. (c) Disassembly of the vibration reduciton mechanism (Model H 45MEY only): Remove the Retaining Ring for D52 Hole [39] by using a retaining ring puller. Then remove the two Weight Washers [29], two Weight Springs [37], and Weight [38] from the Cylinder Case [19].
  • Page 5 Retainer Sleeve <24>, Retainer Damper (B) <22>, Retainer Damper Holder <21> from the Cylinder Case <19>. (g) Separate the Second Hammer <26> from the removed Retainer Sleeve <24>. *: Model H 45MEY only <31> *[29] (2 pcs.) <19>...
  • Page 6 (2) Removal of the piston Move the Connecting Rod Ass'y [42]{39} as shown below and remove the Piston [41]{38} from the Crank Shaft [86]{83}. [42]{39} [86]{83} [41]{38} (3) Removal of the first gear and crank shaft (a) Remove the Bolt M5 x 16 [65]{62}, and then remove the Crank Cover [84]{81} from the Crank Case [91]{88}.
  • Page 7 3. Disassembly of the motor unit (1) Firmly hold the Housing [52]{49} and use a plastic hammer to tap the shaft of the Rotor [99]{96} [102]{99} until the spigot joint of the Gear Cover [99]{96} is removed from the Housing [52]{49}. (2) The Rotor [102]{99} has strong magnetic force.
  • Page 8 Reassembly Reassembly can be accomplished by reversing the disassembly procedure. However, special attention should be given to the following items. 1. Reassembly of the hammering mechanism (1) Mounting the first gear and crank shaft (a) Press-fit Oil Seal (B) [90]{87} to the Crank Case [91]{88}.
  • Page 9 (3) Mounting the cylinder and retainer sleeve (a) Mount Retainer Damper (B) <22> and Retainer Damper Holder <21> to the Retainer Sleeve <24> in this order. NOTE: Match the rounded surface of the Retainer Damper Holder <21> with the rounded surface of the Retainer Sleeve <24>.
  • Page 10 (4) Reassembly of the vibration reduciton mechanism (Model H 45MEY only): Insert the Weight Washer [29], Weight Spring [37], Weight [38], Weight Spring [37], and Weight Washer [29] into the Cylinder Case [19] in this order. Mount the Retaining Ring for D52 Hole [39] to the Cylinder Case [19] by using a retaining ring puller.
  • Page 11 (6) Mounting the spacer Insert the Spacer [48]{45} into the Housing [52]{49} aligning its two protrusions with the grooves on the Housing [52]{49}. Be careful of the mounting direction of the Spacer [48]{45}. After inserting, push the Spacer [48]{45} deep into the Housing [52]{49} so that the Spacer [48]{45} does not protrude from the end surface of the Housing [52]{49}.
  • Page 12 2. Reassembly of the power supply unit (1) Mounting the rotor ass’y Before inserting the Rotor [102]{99} into the Housing [52]{49}, mount the Rotor [102]{99} on the Gear Cover [99]{96}. NOTE: Without the gear cover, the Rotor [102]{99} will be strongly attracted and fixed to the Stator Sensor PCB Set [45]{42} by its own magnetic force.
  • Page 13 [45]{42} [98]{95} [69]{66} Check the connector orientation. Check the connector Connectable with orientation. either terminal Black Connectable with either terminal White Black Black [75]{72} [53]{50} [71]{68} [72]{69} Black Connectable with either terminal [62]{59} -12-...
  • Page 14 Fill or apply Hitachi Motor Grease No. 29 to the following points. • Fill a total of 20 g of Hitachi Motor Grease No. 29 in the Crank Case [91]{88} on the First Gear [96]{93} side and the Gear Cover [99]{96} side.
  • Page 15 Tightening torque CAUTION: Be sure to apply TB1401 screw locking agent to the threads of the following screws and bolts. Otherwise, the screws or bolts loosened by vibration may cause damage to the tool body. +1.96 • Seal Lock Hex. Socket Hd. Bolt M6 x 45 [49]{46} ······························· 9.8 N•m (100 kgf•cm) +1.96...
  • Page 16 Connecting diagram • Wiring diagram Panel Switch board 8-wire Black Black Cord Stator sensor Filter White White Controller set board set board set Black Black Pillar terminal 5-wire -15-...

  • Page 17: Standard Repair Time (Unit) Schedules

    STANDARD REPAIR TIME (UNIT) SCHEDULES Variable MODEL Fixed Work Flow H 45MEY H 45ME Handle Back Cover Controller Housing (A).(B) Set Transatory Stator Unit Panel Sensor Switch Filter PCB Set PCB Set Cord Gear Cover Cord Armor Rotor Ball Bearing...
  • Page 18 LIST NO. F435 DEMOLITION HAMMER 2016 · 6 · 2 Model H 45MEY (E1)
  • Page 19 PARTS H 45MEY ITEM CODE NO. DESCRIPTION REMARKS USED 337562 FRONT CAP 318590 STOPPER RING 370172 RETAINER WASHER 370173 GRIP 339053 RETAINER DAMPER (A) 337558 BIT LOCK HOLDER 370239 STEEL BALL D5 370242 SPRING HOLDER (A) 370243 RETAINER SPRING 370244...
  • Page 20 PARTS H 45MEY ITEM CODE NO. DESCRIPTION REMARKS USED 333263 DUST SEAL 370002 TAIL COVER 370251 HOUSING 370249 CONTROLLER 100V-127V 370250 CONTROLLER 220V-240V 370074 VINYL TUBE L50 370073 VINYL TUBE L35 991690 SEAL LOCK HEX. SOCKET HD. BOLT M5 X 12...
  • Page 21 PARTS H 45MEY ITEM CODE NO. CODE NO. DESCRIPTION REMARKS USED 321274 OIL SEAL (B) 370224 CRANK CASE 995396 VALVE 949422 WASHER M3 (10 PCS.) 370245 FELT 983162 SEAL LOCK HEX. SOCKET HD. BOLT M4 X 12 337532 FIRST GEAR...
  • Page 22 LIST NO. F434 DEMOLITION HAMMER 2016 · 6 · 2 Model H 45ME (E1)
  • Page 23 PARTS H 45ME ITEM CODE NO. DESCRIPTION REMARKS USED 337562 FRONT CAP 318590 STOPPER RING 370172 RETAINER WASHER 370173 GRIP 339053 RETAINER DAMPER (A) 337558 BIT LOCK HOLDER 370239 STEEL BALL D5 370242 SPRING HOLDER (A) 370243 RETAINER SPRING 370244 SPRING HOLDER (B) 333255 STOPPER RING...
  • Page 24 PARTS H 45ME ITEM CODE NO. DESCRIPTION REMARKS USED 370249 CONTROLLER 100V-127V 370250 CONTROLLER 220V-240V 370074 VINYL TUBE L50 370073 VINYL TUBE L35 991690 SEAL LOCK HEX. SOCKET HD. BOLT M5 X 12 991711 DISTANCE PIECE (B) 370258 HANDLE (A).(B) SET INCLUD.56 949890 PIN D3X20 (10 PCS.)
  • Page 25 PARTS H 45ME ITEM CODE NO. CODE NO. DESCRIPTION REMARKS USED 370245 FELT 983162 SEAL LOCK HEX. SOCKET HD. BOLT M4 X 12 337532 FIRST GEAR 939299 NEEDLE BEARING (M661) 337581 PANEL 370252 GEAR COVER 6201DD BALL BEARING 6201DDCMPS2L 302429 DUST WASHER (B) 337578 ROTOR...

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H 45me