HAMMERS HEB20 Operating Manual
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HAMMERS HEB20 Operating Manual

Heb hydraulic breaker series
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HAMMERS
Hydraulic Breaker
Operating Manual
HEB HYDRAULIC BREAKER SERIES
HEB20 / HEB30 / HEB40 / HEB43 / HEB45 / HEB50 / HEB70 / HEB80 / HEB81 / HEB100 / HEB120
Hydraulic Attachments Intl Inc 2501- Blue Ridge Rd Suite 250 Raleigh, 27607

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  • Page 1 Hydraulic Breaker Operating Manual HEB HYDRAULIC BREAKER SERIES HEB20 / HEB30 / HEB40 / HEB43 / HEB45 / HEB50 / HEB70 / HEB80 / HEB81 / HEB100 / HEB120 Hydraulic Attachments Intl Inc 2501- Blue Ridge Rd Suite 250 Raleigh, 27607...

  • Page 2: Table Of Contents

    CONTENTS OPERATING MANUAL 1. Safety Precautions …………………………………………………………………………… 2. Standard Specifications ……………………………………………………………………… 3. Construction & Main Parts …………………………………………………………………… 4. Principle of Operation ………………………………………………………………………… 5 . Hammer Tool s ………………………………………………………………………………… 11 6. Preparation for Installation & Operation ………………………………………………… 7. Operation (Breaking) ………………………………………………………………………… 8.

  • Page 3: Safety Precautions

    1. Safety Precautions 1.1 Safety Precautions 1) This manual contains safety, operation, and routine maintenance instructions. It does not contain service disassembly instructions. If needed, complete service disassembly and assembly instructions are contained in the manual, which can be ordered from your Hydraulic Attachments -Hydraulic Breaker authorized and certified dealer.
  • Page 4 f) Establish a training program for all operators to ensure safe operation. g) Do not operate the breaker unless thoroughly trained or under the supervision of an instructor. h) Become familiar with the carrier controls before operating the carrier and the breaker. i) While learning to operator the breaker and carrier, do so at a slow pace.

  • Page 5: Standard Specifications

    2. Standard Specifications 2.1 Standard Specifications - HEB20, HEB30, HEB40, HEB43, HEB45, HEB50 Model HEB20 HEB30 HEB40 HEB43 HEB45 HEB50 Divide Operating Weight ( kg ) Operating 80 ~ 110 90 ~ 120 110 ~ 140 120 ~ 150 130 ~ 160...
  • Page 6 2.2 Standard Specifications - HEB70, HEB80, HEB81, HEB100, HEB120 Model HEB70 HEB80 HEB81 HEB100 HEB120 Divide 1,300 1,850 1,910 2,480 3,160 Operating Weight 1,370 1,780 1,830 2,300 3,010 ( kg ) Operating 150 ~ 170 160 ~ 180 160 ~ 180 160 ~ 180 170 ~ 190 Pressure...
  • Page 7 2.3 Specification of Noise Level - HEB20S, HEB30S, HEB40S, HEB43S, HEB45, HEB50S Model Units HEB20S HEB30S HEB40S HEB43S HEB45S HEB50S Divide Pressure 80 ~ 110 90 ~ 120 110 ~ 140 120 ~ 150 130 ~ 160 150 ~ 170 l /min 25 ~ 50 25 ~ 40...

  • Page 8: Construction & Main Parts

    3. Construction & Main Parts 3.1 Inner Valve Type - HEB20, HEB30, HEB40, HEB43, HEB45, HEB50, HEB81 Through bolt ◈ Front head, cylinder and back head of breaker body are tightly fixed with four tie rods. Back head ◈ This contains the cushion chamber charged...
  • Page 9 3.2 Outer Valve Type - HEB70, HEB80, HEB100, HEB120 Through bolt ◈ Front head, cylinder and back head of breaker body are tightly fixed with four tie rods. Back head ◈ This contains the cushion chamber charged with nitrogen(N2) gas that compresses during upward strokes of the piston, and serves to provide maximum absorption of piston recoil, efficiency storing this energy for the next blow.

  • Page 10: Principle Of Operation

    Further the Back-Head is charged with N2-gas. When the piston moves backward, the N2-gas is compressed to store the gas energy and, when the piston hammers, the gas energy is converted into piston hammering energy. < Piston start up >...
  • Page 11 < Valve Charging > When the piston moves backward and the piston rear chamber B connected to the valve change port B , the high-pressure oil acts upon the valve change chamber V and the valve changes. At this time, the piston rear chamber B is disconnected from the valve low-pressure chamber V and connected to the valve...

  • Page 12: Hammer Tools

    5. Hammer Tools 5.1 Selection of tools HAMMERS can offer the selection of standard and special tools to suit each application. The correct type of the tool must be selected to get the best possible working result and the longest life time for tool.
  • Page 13 5.3 Cause of tool failure External Forces ◈ The main cause of increased fatigue stress in a tool is any form of side force that creates bending during operation. Therefore, using the tool to pry, using the incorrect working angle, or attempting to break ground using the pull of the machine, are detrimental to the life of a tool and must be avoided.
  • Page 14 5.4 Greasing Manual Greasing System WARNING ■ Insufficient greasing may cause abnormal wear of front cover and tool, and tool breakage Apply grease to grease nipple on front head every 3 hours. Adapt grease interval and amounts to tool wear rates and working conditions.

  • Page 15: Preparation For Installation & Operation

    6. Preparation for Installation & Operation 6.1 Hydraulic pipe lines for exclusive use. Operation of the hydraulic breaker requires installation of hydraulic pipe lines for exclusive use of the hydraulic breaker. As hydraulic pipe lines vary depending on base machines, the service engineer must first check hydraulic pressure, oil capacity, pressure loss and other conditions of the base machine before installing hydraulic pipe lines.
  • Page 16 6.2 General view of breaker installed - 15 -...

  • Page 17: Operation (Breaking)

    7. Operation (Breaking) 7.1 Principle of breaking ※ There are basically two ways of breaking with a Gas-type breaker. 1) Penetrative (or cutting) breaking In this form of breaking the cone point or chisel tool is forced inside the material. This method is most effective in soft, layered or plastic, low abrasive material.
  • Page 18 On the contrary, when position is excessive enough to break rocks with the front of the base machine raised, the machine may suddenly tilt forward the moment rocks are broken. Then, the breaker body or the end of bracket may violently hit against rocks and result in damage. It is undesirable to carry out hammering under the below condition, because vibrations during hammering may be transmitted to the tracks of the base machine.
  • Page 19 7.3 Alignment of the Tool Apply same direction of boom force in line with the Tool and place the Tool in the rock with hammering surface as vertical as possible. If hammering surface is oblique, the Tool may slip during hammering. This causes the Tool to seize and to be broken and the piston to be damaged.
  • Page 20 ■ DO NOT USE UNDERWATER WITHOUT AIR APPLICATION KIT - NO PART OF THE HAMMERS HYDRAULIC BRAKER SERIES MAY BE SUBMERGED IN WATER WITH IT FIRST ADAPTING THE BREAKER FOR UNDERWATER USE. - USE OF THE BREAKER UNDERWATER REQUIRES AN UNDERWATER APPLICATION KIT AND AN AIR COMPRESSOR CAPABLE OF PRODUCING 6000LPM/150PSI.
  • Page 21 Excessive vibration of high and low pressure hoses of the breaker calls for an instant disassembly and repair. Contact the nearest service station appointed by HAMMERS. For caution's sake, check oil leakage at the Back-Head. - The operator is required to pay attention to following points during operation.
  • Page 22 4) Do not use the Tool as a lever. If breaking rocks by using the Tool as a lever, the bolts and the Tool may break. - 21 -...
  • Page 23 5) Do not continue to hammer for more than one minute. When rocks are not broken after more than one minute of hammering at the same point, change the place to be hammered. Extended hammering at the same place causes the Tool to wear out excessively. 6) On a hard and large rock, start breaking at an edge.
  • Page 24 8) Do not operate the breaker in water and mud. Do not operate the breaker when components (except Tool) are immersed in water and mud. The piston and similar components may gather rust and become damaged at an early stage. 9) Do not allow the breaker to fall to break a rock.
  • Page 25 10) Do not hammer with the base machine cylinders moved to stroke end. Hammering with each base machine cylinder moved to it's end stroke (fully extended or retracted) will do considerable damage to the cylinder and each part of the base machine.
  • Page 26 12) Warm up base machine engine prior to operation. Especially in winter, the base machine engine should be warmed up for five to ten minutes ℃~ 40℃ / 80℉~ 105℉) (about oil temperature 30 before breaker operation. Follow the Instruction Book for the Base Machine for warming-up of the engine. 13) Do not touch the Tool during hydraulic breaker operation.

  • Page 27: Installation & Removal Of Hammer

    8. Installation & Removal of Hammer When the bucket and the breaker operation are performed alternately, the bucket and the breaker can be easily exchanged by the hydraulic hoses and the two pins. There is however, a risk of the hydraulic circuit contamination Accordingly, install and remove as follows.
  • Page 28 3) Loosen the hose plug on the breaker arm. Collect small amount of oil flowing out at this time and put into a container. 4) Be careful to prevent mud or dust from entering the oil hoses and the pipe lines. Plug the oil hoses with the hose plug and the pipe lines with the union caps.
  • Page 29 8.1 Selection of suitable carrier Description P : Main relief pressure setting of carrier Q : Flow rate of carrier W : Gross weight of carrier C : Standard bucket capacity 8.2 Installation breaker to unsuitable carrier Description When the breaker is installed to a carrier whose main relief pressure setting is not suitable, it cannot display the breaking ability When the breaker is installed to a carrier whose pump flow rate (Q) is not suitable, the breaking operation cannot be performed under normal breaker...
  • Page 30 8.4 Setting of relief pressure Description Install a pressure gage and check relief pressure setting. Bleed pressurized air from hydraulic oil tank and install a pressure gage to the pressure inspection port. Close the stop valve installed to breaker high-pressure piping when the breaker hoses are not connected also tighten union cap.
  • Page 31 8.7 Control of hydraulic oil contamination Description When the hydraulic oil is contaminated, not only the breaker but also the hydraulic components of the carrier operate improperly and, further, the parts may be damaged. - Replace of oil filter : After 50hours initially and every 100hours thereafter - Change of oil : After 250hours initially and every 600hours thereafter 8.8 Troubles caused by contaminated hydraulic oil Description...
  • Page 32 ■ Hydraulic Breaker Maintenance List and Point Inspection Item Inspection Point . Through Bolts . Looseness, missing and damage to the . Bracket Mounting Bolts bolts and the nuts . Accumulator Bolts . Looseness of the hose fittings, . Hydraulic pipes for the breaker visible damage to the hoses and oil .

  • Page 33: Repair & Inspection

    9. Repair & Inspection 9.1 Inspection Points Model Unit Divide Kg.m 2500 Through Bolt (N.m) (400) (400) (400) (400) (1000) (1500) (1750) (2250) (2700) (2500 (3600) Kg.m Charging Valve (N.m) (350) (350) (350) (350) (350) (350) (350) (350) (350) (350) (350) Kg.m Side Bolt...
  • Page 34 9.2 Periodic Maintenance (Every 100 hours) 1) Remove the tool and all grease from the chisel holder bushing Do not use a pressure washer, steam or solvents as they damage the seals. Chuck for chips or cracks inside the housing and on the bushing surfaces. Cracks and chips could indicate that : ①...
  • Page 35 . Replace seriously damaged parts. to hoses and . Oil hoses oil leakage Abnormal . Connections of Back- . Consult with HAMMERS service station for further inspection. Oil leakage head and cylinder . Clearance between front head & Tool Abnormal .
  • Page 36 HAMMERS Co., Ltd. Regular inspection is essential for keeping the hydraulic breaker operating in the best condition. Consult with the HAMMERS service station for regular inspection and maintenance. Customers are recommended to contact the local dealer for inspection within six months after delivery.
  • Page 37 9.6 Disassembly & Reassembly of the Breaker Since the breaker body is manufactured by state-of the art processing techniques and consists of the high-quality hydraulic parts, it is dangerous to disassemble the breaker at a workshop. Contact your local dealer when disassembly is called for, otherwise quality and performance of the breaker cannot be guaranteed.

  • Page 38: Inspection & Charging (Back Head)

    10. Inspection & Charging Nitrogen(N ) Gas at the Back-Head WARNING ■ CHARGING GAS PRESSURE CHANGES ACCORDING TO THE TOOL CONDITION. LAY DOWN THE BREAKER AND LET THE TOOL EXTEND FULLY. ■ STAY CLEAR OF THE TOOL WHILE CHARGING THE BREAKER WITH GAS. THE TOOL MAY BE IMPACTED BY THE PISTON AND FORCED OUT ABRUPTLY.
  • Page 39 9) When the gas pressure reaches to the specified pressure, close the valve and release the handle. 10) Open the valve completely and discharge gas inside the gas charging kit. Remove the gas charging kit from the charging valve of the Back-Head and install the plug to the charging valve.

  • Page 40: Inspection & Charging (Accumulator)

    11. Inspection & Charging Nitrogen Gas at the Accumulator WARNING ■ USE SPECIAL CARE TO HANDLE AND STORE THE N GAS CYLINDER AS IT IS A HIGHLY PRESSURIZED CONTAINER. ■ USE NITROGEN GAS ONLY. ■ STANDARD ACCUMULATOR GAS PRESSURE 55kg/cm /780PSI AT 20 ℃...
  • Page 41 5) Loosen the accumulator charging valve(⑫ ) after checking if the bushing(⑦ ) is installed to the gas charging kit. 6) Turn the handle of the N2-Gas cylinder counter clockwise slowly to charge gas. 7) Charge gas in accordance with the conversion table for charging N2-Gas pressure to the accumulator.

  • Page 42: Trouble-Shooting Guide

    12. Trouble-Shooting Guide 12.1 Problems in operation If the breaker does not work or blow frequency and blow get worse, check following trouble Shooting. And then inspect according to the following order. Symptom Cause Required action 1.Excessive back head gas pressure 1.Re-adjust nitrogen gas pressure 2.Stop valve (s) closed 2.Open stop valve...
  • Page 43 RELATION OF GAS PRESSURE, IMPACT ENERGY AND FREQUENCY Lack of impacting power Gas pressure low No Breaker Function Gas pressure high Low Blow Frequency 12.2 Gas Leakage Trouble Cause Remedy Defective o-ring in charging Replace ● ● Gas leakage from the valve top of charging valve Defective or damaged in...
  • Page 44 12.3 Oil Leakage Even if oil is leaking, there is no use to replacing parts at all times check the following points listed in the chart below. The user can check the (☞) marked points before calling dealer. Area of oil Condition Causes &...

  • Page 45: 3 . Tool Selection

    13. Tool Selection 13.1 Guide to tool choice WARNING ■ The correct choice of the most suitable tool for a certain job is crucial not only in increasing hydraulic breaker productivity, but also for the life of the tool itself. A : Chisel (Wedge) Tool - Suitable for all kinds of digging or narrow trenching on soft/medium stratified rocks.
  • Page 46 ■ Breakage of piston impact area or tool pins contact corners (Fig.1 and 2) Breakage of piston impacting point or of tool pins contact corners is extremely rare. This phenomenon occurs or when striking force is being concentrated on the tool corners due to unsatisfactory flatness of piston and tool impacting point.
  • Page 47 ■ Breakage inside basic line (Fig.4 and 5) Should product breakage occur in any direction at a point inside the front cover, as shown in<Fig.5>, from the basic line shown in<Fig.4>, this may be due to defective material, defective heat-treatment : tool deformation, or unsatisfactory shaping of tool neck.
  • Page 48 (FIG. 6) (FIG. 7) (FIG. 8) - 47 -...
  • Page 49 ■ Crushing of tool tip (Fig.9) Breaker tools are heat-treated to exhibit high breakage-and wear-resistance; and defects such as crushing of the tool tip<Fig.9> are not to be expected under normal operating conditions. However, if a tool is hammering continuously for a long period of of time without crushing or puncturing the material being worked on, the temperature of the tip rises extremely high, inducing annealing of the heat-treated material, and bringing on plastic deformation (crushing), rather than wear.

  • Page 50: Customer's Report

    14. Customer’s Report 14.1 Delivery and Installation Card This is report is for checking that breaker is correctly delivered and equipped on machine Distributor should correctly draw up this. This is report must be drawn up in typewritten and informed within 7 days after the date When delivered breaker to customer.
  • Page 51 DELIVERY AND INSTALLATION CARD The goal of this installation card is to perform the effective service, and this card filled in must be returned to: (919)-800-3764 fax within (five) days from receipt of delivery. Breaker Model Serial No DISTRIBUTOR / REPRESENTATIVE USE Company Phone No Address...
  • Page 52 Treatment ■ lf you complete out service, mark ‘0’ ● Replace parts : Inform HAMMERS list of parts replaced, by fax or mail with this report. ● Inspector’s Comment ■ Inspector’s comment on the trouble of breaker or service you done.
  • Page 53 SERVICE REPORT Ref. No. Date of Service Maker : Model Base Machine Operating Hours : Remarks Maker : Serial No. Breaker Operating Hours : Delivery Date Oil Pressure Back Head Condition N2 Gas Oil Flow Pressure Accumulator Breaker l/min ● Part Name Parts No.

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