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HYDRAULIC HANDHELD BREAKER
MODEL BH112
OPERATING MANUAL
CAUTION
FOR THE SAFETY PURPOSE, PLEASE READ THIS MANUAL THROUGHLY
BEFORE
ATTEMPTING
TO
USE
THIS
BREAKER.
ANY
FALES
OPERATING PROCEDURES WILL CAUSE DAMAGES OF THE MACHINE.
ALWAYS KEEP THIS MANUAL TO AN EASILY ACCESSABLE PLACE.
MARUZEN KOGYO CO., LTD.
(Revised March 30, 2017)
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Summary of Contents for Maruzen BH112
- Page 1 CAUTION FOR THE SAFETY PURPOSE, PLEASE READ THIS MANUAL THROUGHLY BEFORE ATTEMPTING THIS BREAKER. FALES OPERATING PROCEDURES WILL CAUSE DAMAGES OF THE MACHINE. ALWAYS KEEP THIS MANUAL TO AN EASILY ACCESSABLE PLACE. MARUZEN KOGYO CO., LTD. (Revised March 30, 2017)
- Page 2 We recommend you always use Maruzen genuine components and parts. Replacing components and parts from other sources may cause damages to this machine and endanger operators.
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Page 3: Table Of Contents
CONTENTS Safety Information .............. 4 ～ 7 Safety Alert Classifications ........... 4 Safety Alerts ..............5 ～ 7 Introductions ............... 8 Specifications & Descriptions ..........9 Precaution Labels and Positions ........10 Inspection before Each Operation ........11 Guidelines ................12 ～ 13 Operation................ -
Page 4: Safety Information
SAFETY INFORMATION To enable you to use this machine safely, safety precautions and labels are given in this manual and affixed to the machine to give explanations of situations involving potential hazards and of the methods of avoiding such situations. SAFETY ALERT CLASSIFICATIONS The following safety alert symbols are used to inform you that there is a potential hazardous situation that may lead to personal injury or... -
Page 5: Safety Alerts
SAFETY ALERTS DO NOT OPERATE THE MACHINE UNLESS THE FOLLOWING SAFETY INSTRUCTIONS HAVE BEEN THOROUGHLY READ AND UNDERSTOOD! WARNING Before operating the equipment, be sure ware personal protective equipments such as follows: 1. Helmet 2. Protective goggles 3. Protective boots 4. - Page 6 CAUTION Do not touch the machine with your bare hands 1. The oil tank may become hot under continuous running. Do not touch the equipment with your bare hands. 2. Tools may become hot under continuous use, make sure to ware gloves before any contact with the tools. * Failure to observe this precaution can result getting burned CAUTION...
- Page 7 WARNING Never operate the breaker when bystanders are in the work area 1. Do not operate the breaker if any people are within the area where flying debris or movement of the breaker may injure them. 2. For preventing flying debris, make sure protection fences are being set up.
- Page 8 INTRODUCTION 1. This hydraulic breaker is designed to be used for the following purposes. (1) Breaking concrete and asphalt (2) Anchoring and pile driving (3) Digging or breaking hard soil (4) Compacting soil (5) Cutting asphalt DO NOT operate this breaker on the following situations: (1) Drench part of the breaker or whole breaker into water or seawater.
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Page 9: Specifications & Descriptions
SPECIFICATIONS & DESCRIPTIONS Handle Control Lever Overall Weight 11kg (Without tool) Accumulator Overall Dimensions 566mm X 156mm Working Pressure 90～130kgf/㎠ (8.8～12.7Mpa) Standard Hoses Max. Pressure 210kgf/㎠ (20.6MPa) Side Handle Oil Flow Blow per Minute (1)10～12l/min….1300bpm (Standard) (2)12～151/min….1500bpm (3)15～201/min….1700bpm (4)20～251/min….2200bpm Coupler (Male) Shank Size Hex. -
Page 10: Precaution Labels And Positions
PRECAUTION LABELS AND POSITIONS * Make sure labels are legible. Replace new one when they are illegible. -
Page 11: Inspection Before Each Operation
Loose Handle attachment INSPECTIONS BEFORE EACH OPERATION Loose Nut For the purpose of keeping the breaker in good Loose Bolt condition, make sure the following inspection items are done each time before using. (Refer the drawing Loose Hose Attachments on the right) Countermeasures Inspection Items Oil leakage... -
Page 12: Guidelines
GUIDELINES Following these guidelines while using this breaker: 1. When intend to use other power source (other than Maruzen hydraulic power units), make sure the pressure of the power source is in the range of 140 ～ 210kgf/㎠ and oil flow is in the range prescribed 2. - Page 13 12. After the operation, use tool to push up the piston. CAUTION Immediately STOP the power source if the breaker does not stop after releasing the control lever. Ask Maruzen dealer for repair and service before the next operation. OPERATIONS 1. Connect hydraulic breaker’s standard hose ①...
- Page 14 3. Unlock the latch ④on breaker, load the tool⑤ and lock the latch again. 4. Start engine in power source and let engine run for a while to warm up the machines. 5. Clasp the handle grip⑥, bear down the breaker, clasp the control lever gently and let the breaker start running.
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Page 15: Daily Check Out
DAILY CHECK OUT Check before each operation 1. Check if there is any oil leakage from hoses or breaker itself. 2. Check if there are any cracks or damage in tools. PERIODICAL INSPECTION Ask your dealer for the periodical inspections. Inspection Items Operating Hours Nitrogen gas charge in accumulator... -
Page 16: Troubleshooting
TROUBLE SHOOTING Symptoms Causes Countermeasures Grip the control lever but does not start 1. Power source is off (Switch lever is Start the power source (Turn the not in ON position) switch lever to On position) 2. Hoses are not connected Connect hoses 3. - Page 17 1. Replace diaphragm * Release the control lever but the breaker 1. Foreign substance is caught in the 1. Disassemble, clean and adjust * does not stop valve rod For items with *, ask Maruzen dealers for service and maintenance.
- Page 18 EXPLODED VIEW MODEL BH112...
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Page 19: Parts List
PARTS LIST MODEL BH112 Code Descriptions Q’ty Code Descriptions Q’ty M2LTC101A Valve Body OBP-14 Back Up Ring M2LTC102A Front End OBP-5 Back Up Ring M2LTD103A Shell W18S1 Seal Washer M2LTD104B Cylinder W6S1 Seal Washer M2LTD125A Piston (B) BH-8 X 80... - Page 20 Code Descriptions Q’ty MB02Z026A Half PR-8×30 Spring Pin BH-8X35 Bolt M1ZTE127A Orifice Plug (1.9mm) BH-8×18 Bolt M2LTZ501A Accumulator Assy 3, 8, 15, 10, 14, 27, 32 (Without nitrogen gas) M2LTZ502A Cylinder Assy 4, 44 (5) M2LTZ503A Inner Tube Assy 9, 11, 13, 44 M2LTZ504A Front End Assy 2, 6...
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