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HYDRAULIC HANDHELD BREAKER
MODEL BH20EV
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 TO THE MACHINE.
ALWAYS KEEP THIS MANUAL TO AN EASILY ACCESSABLE PLACE.
MARUZEN KOGYO CO., LTD.
(Nov 20, 2015)
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Summary of Contents for Maruzen BH20EV
- Page 1 OPERATING MANUAL CAUTION FOR THE SAFETY PURPOSE, PLEASE READ THIS MANUAL THROUGHLY BEFORE ATTEMPTING THIS BREAKER. FALES OPERATING PROCEDURES WILL CAUSE DAMAGES TO THE MACHINE. ALWAYS KEEP THIS MANUAL TO AN EASILY ACCESSABLE PLACE. MARUZEN KOGYO CO., LTD. (Nov 20, 2015)
- 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 How To Adjust the Hammering Power ....... 8 Specifications & Descriptions ..........9 Precaution Labels and Positions ........10 Inspection before Each 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) Digging or breaking hard soil (3) Compacting soil (4) 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 Weight 20kg (Without tool) Dimensions L665mmxW410mm Working Pressure 8 ～ 11 MPa Max. Pressure 20.6 MPa Oil Flow 20.5l B.P.M. 1450bpm Shank Size Hex. 1” x 108mm Coupling 3/8” Couplers Latch Back Pressure 2.5MPa Extension Hose 3/8” x 10m (with Power Unit) Hydraulic oil ISO VG32,... - Page 10 Safety Labels Part No. Part Name MPL1Z074A Label BY（warning） ① MPL1Z075A Label BZ (warning) ②...
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Page 11: Inspection Before Each Operation
INSPECTIONS BEFORE EACH OPERATION For the purpose of keeping the breaker in good condition, make sure the following items should be inspected each time before using. (Refer the drawing below) Inspection Items Countermeasures Tighten the loosen 1. Loose nut Tighten the plug 2. -
Page 12: Guidelines
GUIDELINES 1. Always use Maruzen Genuine Tools. Use other than Maruzen genuine tools may cause breakage of tools which may lead to the damage of the breaker and personal injury. 2. Consult with us when using power source other than UH070 Maruzen power pack. -
Page 13: Operation
OPERATION When connect this breaker to power source other than Maruzen UH070 power unit, make sure the power source you intend to use is within the range (oil flow, pressure etc) prescribed on page 9. - Page 14 3. Make sure there is no dust or dirt inside couplers before connecting breaker to hydraulic power pack. Couplers: Make sure they are clean before the attachment Breaker Hoses Extension Hoses 4. Active the power source. (Start the engine on the power pack) Operation 5.
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Page 15: Daily Check Out
6. Do not hammer the same place for over 30 seconds. If the target object does not break within 30 seconds, change the hammering point. 7. Do not blank hammering for over 10 seconds. 8. Stop the power pack when the job has completed. 9. -
Page 16: Available Tools
AVAILABLE TOOLS MOIL POINT For Breaking L = 400mm CONCRETE CHISEL For Breaking L = 400mm ASPHALT CHISEL For Cutting Asphalt L = 400mm SHOVEL For Digging Hard Soil L = 400mm TAMPING RAMMER For Compacting Soil and Sand L = 400mm... -
Page 17: 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 in OFF position) switch lever to On position) 2. Hoses are not connected Connect hoses 3. - Page 18 1. Replace diaphragm * Release the control valve 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 19 EXPLODED VIEW MODEL BH20EV...
- Page 20 Part No. Part Name Q’ty Ｎｏ． Part No. Part Name Q’ty Ｎｏ． MB19Z010A Cover MB02E006A Diaphragm MB19Y001B Cover MB19Y002A Shell MB35Z009A Handle (Ｌ） WS－06<<<<<<<<BH Seal Washer Handle (Ｒ） MB19Z023B 1120―413―D Cap Bolt OS－15 1120―414 Handle Grip O-Ring MB35Z010A Control Lever MB35Z017A Plug OBP－22...
- Page 21 MB37Z011A Spring MB18Y046A MB37Z013A Piston Movable Bush OG-60 O-Ring MB37Z014A Washer PR―6x20 MZ42－002D Moil Point (Accessory) M1XTD104B Cylinder (A) MB850―040 Expander MB29Z023A Maruzen Sticker 2 IUIS 30、40、6 U Cup Packing LBI 30、38、5、6.5 Dust Seal WF―14 2L Washer 1120―423 PR―16×60 PR―10×60...
- Page 22 Code Descriptions Q’ty 20、21、22、23、24、25、26、27、28、29 MB19Z051A Accumulator Assy Ａ1 MB24Z509A 24、25 Cap Bolt Assy Ａ2 26、27 MB35Z075A Plug Assy Ａ3 MB32Z500A 30、31、33、67（4） Valve Body Assy Ａ4 M2LTZ506A 45、46、47、48 Valve Guide Assy Ａ5 49、50、51 M1XTZ505A Valve Rod Assy Ａ6 MB32Z501A 35、36、37、67 Inner Tube Assy Ａ7 3、5、8、10、11（2）、16（3）...
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