Avantco B70 Silent User manual

Hydraulic Breakers
AVANT B70 Silent
AVANT B110 Silent
AVANT B160 Silent
Operators Manual
200 -

Table of contents
2
hydraulic breaker
TABLE OF CONTENTS
OPERATION .......................................................................................................................3
1.FOREWORD............................................................................................................................................................4
1.1 IMPORTANT SAFETY INFORMATION ...........................................................................................................4
1.2 WARRANTY ......................................................................................................................................................5
1.3 SPARE PART ORDERS.......................................................................................................................................5
2. MACHINE NUMBERS............................................................................................................................................6
2. 1 MODEL AND SERIAL NUMBER......................................................................................................................6
3. PRODUCT INTRODUCTION ..............................................................................................................................7
3.1 OVERVIEW ........................................................................................................................................................7
3.2 REMOVAL FROM PACKAGE ............................................................................................................................7
3.3 LIFTING INSTRUCTIONS ................................................................................................................................7
3.4 MAIN PARTS......................................................................................................................................................
4. SAFETY .................................................................................................................................................................10
4.1 GENERAL SAFETY ..........................................................................................................................................10
4.2 SAFETY INSTRUCTIONS ...............................................................................................................................10
5. OPERATION.........................................................................................................................................................16
5.1 OPERATING INSTRUCTIONS .......................................................................................................................16
5.2 DAILY OPERATION ........................................................................................................................................17
5.3 MOUNTING AND DISMOUNTING THE HAMMER....................................................................................22
5.4 MOVEMENT....................................................................................................................................................23
5.5 SPECIAL CONDITIONS OF USE ...................................................................................................................23
5.6 STORAGE ........................................................................................................................................................24
LUBRICATION..................................................................................................................25
1. HAMMER TOOL GREASING...............................................................................................................................26
1.1 RECOMMENDED GREASES...........................................................................................................................26
1.2 MANUAL GREASING......................................................................................................................................26
2. CARRIER HYDRAULIC OIL..................................................................................................................................28
2.1 REQUIREMENTS FOR HYDRAULIC OIL.......................................................................................................28
2.2 OIL COOLER...................................................................................................................................................30
MAINTENANCE ...............................................................................................................33
1. ROUTINE MAINTENANCE ................................................................................................................................34
1.1 OVERVIEW ......................................................................................................................................................34
1.2 MAINTENANCE INTERVALS IN SPECIAL APPLICATIONS .........................................................................34
1.3 OTHER MAINTENANCE PROCEDURES......................................................................................................34
2. REMOVAL OF TOOL...........................................................................................................................................35
3. LOWER TOOL BUSHING ...................................................................................................................................37
4. TROUBLESHOOTING.........................................................................................................................................3
4.1 THE HAMMER DOES NOT START................................................................................................................3
4.2 THE HAMMER OPERATES IRREGULARLY BUT THE BLOW HAS FULL POWER ......................................40
4.3 THE HAMMER OPERATES IRREGULARLY AND BLOW HAS NO POWER ................................................40
4.4 IMPACT RATE SLOWS DOWN ......................................................................................................................41
4.5 THE HAMMER DOES NOT STOP OR HAS RUNON...................................................................................41
4.6 OIL OVERHEATS.............................................................................................................................................42
4.7 RECURRENT TOOL FAILURE........................................................................................................................42
4.8 FURTHER ASSISTANCE..................................................................................................................................43
SPECIFICATIONS.............................................................................................................45
1.HAMMER SPECIFICATIONS.................................................................................................................................46
1.2 MAIN DIMENSIONS .......................................................................................................................................47
2.TOOL SPECIFICATIONS ......................................................................................................................................48

OPERATION
3
Operation
hydraulic breaker

1. FOREWORD
1.1 IMPORTANT SAFETY INFORMATION
Basic safety precautions are outlined in the "Safety" section of this manual
and in the description of operations where hazards exist. Warning labels
have also been put on the machine to provide instructions and to identify
specific hazards which if not observed could cause bodily injury or death to
you or other persons. These warnings in the guide and on the machine la
bels are identified by the warning symbol.
To use the attachment correctly, you must also be a competent operator of
the carrier machine. Do not use or install it if you can not use the carrier ma
chine properly. The attachment is a powerful tool. If used without proper
care, it can cause damage.
Do not rush when you are learning to use the product. Take your time and
most importantly, take it safely. Do not guess. If there is anything you do not
understand, ask your local dealer. He will be pleased to advise you.
Improper operation, lubrication or maintenance of this machine can be dan
gerous and could result in injury.
Do not operate this machine until you read and understand the instructions
in this manual.
Do not perform any lubrication and maintenance on this machine until you
read and understand the instructions in this manual.
Foreword
4
hydraulic breaker

1.2 WARRANTY
A complete warranty claim for a hydraulic breaker attachment includes at
least the following information.
Model and serial number
Carrier model
Working hours and service history
Application
Providing this information makes it easy to handle the warranty claim prop
erly and swiftly.
1.3 SPARE PART ORDERS
When you need spare parts or some information concerning maintenance
to your machinery, please contact your local dealer. Quick deliveries are en
sured by exact orders.
Required information:
1. Name of customer, contact person
2. Order number (when available)
3. Delivery address
4. Mode of delivery (air mail, etc.)
5. Required delivery date
6. Invoicing address
7. Model and serial number of product
8. Name, number and required amount of spare parts
5
Warranty
hydraulic breaker

2. MACHINE NUMBERS
2.1 MODEL AND SERIAL NUMBER
The equipment serial number is stamped on the valve body. The model and
serial number are also located on the CE marking. Check that the model cor
responds to the one given on the cover of this manual.
It is important to make correct reference to the serial number of the attach
ment when making repairs or ordering spare parts. Identification of the serial
number is the only proper means of maintaining and identifying parts for a
specific product.
Machine numbers
6
hydraulic breaker

3. PRODUCT INTRODUCTION
3.1 OVERVIEW
The product is a hydraulically operated breaker. It can be used on all AVANT carriers
which meet the necessary hydraulic and mechanical installation re
quirements. The unit functions by repeatedly raising a steel piston and
driving it down onto the head of a removable breaking tool.
No additional pressure accumulators are necessary since the integrated
pressure accumulator absorbs hydraulic pressure peaks. The impact ener
gy of the hammer is almost constant and independent of the carrier's hy
draulic system.
3.2 REMOVAL FROM PACKAGE
Remove all the steel belts from the package. Open the package and remove
all plastics covering the product. Recycle all package materials (steel, plas
tic, wood) properly.
Check that the product is in good condition and that there is no visible dam
age. Check that all ordered parts and accessories have been enclosed with
the product.
3.3 LIFTING INSTRUCTIONS
Use a hoist when lifting components which weigh 23 kg or more, to avoid
back injury. Make sure all chains, hooks, slings etc., are in good condition
and are in the correct capacity. Be sure hooks are positioned correctly. Lift
ing eyes are not to be side loaded during a lifting operation. Do not use the
hammer's tools for lifting.
Product introduction
hydraulic breaker

Lifting devices must safely carry the working weight of the product. See
Hammer specifications on page 46. Place chains or slings, as shown by
the illustration, to lift the product.
SAFETY INSTRUCTIONS FOR LIFTING
Below are some common safety instructions concerning lifting operations.
In addition to this, the local, national standards for machines and lifting tack
les must always be strictly observed. Please note that the list below is not
all inclusive, you must always ensure the procedure you choose is safe for
you and others.
lDo not lift load over people. No one shall be under the hoisted load.
lDo not lift people and never ride the hoisted load.
lKeep people clear from lift area.
lAvoid side pull of the load. Make sure you take up the slack slowly. Start
and stop carefully.
lLift load a few centimeters and verify it before proceeding. Make sure the
load is well balanced. Check for any loose items.
lNever leave the suspended load unattended. Maintain load control at all
times.
lNever lift the load over the rated capacity (see product's operating
weight from specification page).
lInspect all lifting equipment before use. Do not use twisted or damaged
lifting equipment. Protect lifting equipment from sharp corners.
lObey all local safety instructions.
Product introduction
8
hydraulic breaker

3.4 MAIN PARTS
The main parts of the hammer are shown below.
A. Side plates
B. Mounting flange
C. Accumulator
D. Hammer mechanism
E. Hose connections
F. Grease nipples
G. Tool and tool bushing retaining mechanism
9
Product introduction
hydraulic breaker

4. SAFETY
4.1 GENERAL SAFETY
All mechanical equipment can be hazardous if operated without due care or
correct maintenance. Most accidents involving machine operation and
maintenance are caused by failure to observe basic safety rules or precau
tions. An accident can often be avoided by recognizing potentially hazard
ous situations before an accident occurs.
Because it is impossible to anticipate every possible circumstance that
might involve a potential hazard, the warnings in this guide and on the ma
chine are not all inclusive. If a procedure, tool, working method or operating
technique not specifically recommended by manufacturer is used, you must
satisfy yourself that it is safe for you and others. You should also ensure that
the product will not be damaged or made unsafe by the method of operation
or maintenance procedures you choose.
Safety is not just a matter of responding to the warnings. All the time you are
working with your attachment you must pay attention to what hazards there
might be and how to avoid them. Do not work with the product until you are
sure that you control it. Do not start any job until you are sure that you and
those around you will be safe.
Warn ng! Read the follow ng warn ng messages carefully. They tell
you of d fferent hazards and how to avo d them. If proper precaut ons
are not taken you or others could be ser ously njured.
4.2 SAFETY INSTRUCTIONS
MANUALS
Study this manual before installing, operating or maintaining the product. If
there is anything you don't understand, ask your employer or your local deal
er to explain it. Keep this manual clean and in good condition.
Safety
10
hydraulic breaker

Study also the operating and maintenance manual of your carrier before op
erating the attachment.
CARE AND ALERTNESS
All the time you are working with the product, take care and stay alert. Al
ways be alert for hazards. The possibility of a serious or even fatal accident
is increased when you are intoxicated.
CLOTHING
You can be injured if you do not wear proper clothing. Loose clothing can
get caught in the machinery. Wear protective clothing to suit the job.
Examples are: a safety helmet, safety shoes, safety glasses, well fitting
overalls, ear protectors and industrial gloves. Keep cuffs fastened. Do not
wear a necktie or scarf. Keep long hair restrained.
PRACTICE
You and others can be killed or injured if you perform unfamiliar operations
without practising them first. Practice away from the job site, in a clear area.
Keep other people away. Do not perform new operations until you are sure
you can do them safely.
REGULATIONS AND LAWS
Obey all laws, work site and local regulations which affect you and your
equipment.
COMMUNICATIONS
Bad communications can cause accidents. Keep people around you in
formed of what you will be doing. If you will be working with other people
make sure they understand any hand signals you will be using.
Work sites can be noisy. Do not rely only on spoken commands.
11
Safety
hydraulic breaker

WORK SITE
Work sites can be hazardous. Inspect the site before working on it.
Check for potholes, weak ground, hidden rocks etc. Check for utilities (elec
tric cables, gas and water pipes etc.). Mark the positions of underground ca
bles and pipes if you will be breaking the ground.
Poor visibility can cause accidents and damage. Make sure that visibility and
lightning of the working area are adequate.
BANKS AND TRENCHES
Banked material and trenches can collapse. Do not work too close to banks
and trenches where there is a danger of collapse.
SAFETY BARRIERS
Unguarded equipment in public places can be dangerous. Place barriers
around the machine to keep people away.
FLYING CHIPS OF ROCK
Protect yourself and your neighbourhood against flying chips of rock. Do not
operate the product or carrier if someone is too close.
The European standard EN 474 1 on safety of earth moving machinery re
quires that adequate operator's protection, such as bullet proof glass, mesh
guard or an equivalent protection is used.
Keep the cabin windows and doors closed during operation.
Safety
12
hydraulic breaker

HIGH NOISE LEVEL
Wear ear protection against high noise level to prevent personal injury.
EQUIPMENT LIMITS
Operating the product beyond its design limits can cause damage. It can
also be dangerous. See Hammer specifications on page 46.
Do not try to enhance the product's performance by unapproved modifica
tions.
HYDRAULIC FLUID
Fine jets of hydraulic fluid at high pressure can penetrate the skin. Do not
use your fingers to check for hydraulic fluid leaks. Do not put your face close
to suspected leaks. Hold a piece of cardboard close to suspected leaks and
then inspect the cardboard for signs of hydraulic fluid. If hydraulic fluid pen
etrates your skin seek medical help immediately.
Hot hydraulic fluid can cause severe injuries.
HYDRAULIC HOSES AND FITTINGS
Ensure all hydraulic components will withstand maximum pressure and me
chanical stresses caused by operation of the attachment. Consult your local
dealer for instructions.
FIRE HAZARD
Most hydraulic fluids are flammable and might ignite when contacting hot
surface. Avoid spilling hydraulic fluid to hot surfaces.
Working with the product on certain materials can cause sparks and hot
splinters to get loose. These can ignite flammable materials around working
area.
Ensure that adequate extinguisher is available.
13
Safety
hydraulic breaker

HYDRAULIC PRESSURE
Hydraulic fluid at system pressure can injure you. Before disconnecting or
connecting hydraulic hoses, stop the carrier engine, operate the controls to
release pressure trapped in the hoses. During the operation, keep people
away from the hydraulic hoses.
There might be pressurized oil trapped inside the product even if it is discon
nected from the carrier. Be aware of possible blank firing while greasing or
removing and installing hammer tools. See Removal of tool on page 35.
PRESSURE ACCUMULATORS
The hammer incorporates one or two pressure accumulators, depending on
the model. The accumulators are pressurized even when there is no hydrau
lic pressure to the hammer. Attempting to dismantle the accumulators with
out first releasing the pressure can cause injury or death. Do not try to
dismantle pressure accumulators, contact your local dealer first. See Re
leasing hydraulic pressure from hammer on page 51.
LIFTING EQUIPMENT
You can be injured if you use faulty lifting equipment. Make sure that lifting
equipment is in good condition. Make sure that the lifting tackle complies
with all local regulations and is suitable for the job. Make sure that the lifting
equipment is strong enough for the job and you know how to use it.
Do not use this product or any of its parts for lifting. See Lifting instructions
on page 7. Contact your carrier dealer to find out how to lift with your carrier.
SPARE PARTS
Use only genuine spare parts. Use only genuine tools with hydraulic ham
mers. The use of other spare part or hammer tool brands may damage the
product.
Safety
14
hydraulic breaker

EQUIPMENT CONDITION
Defective equipment can injure you or others. Do not operate equipment
which is defective or has missing parts.
Make sure the maintenance procedures in this manual are completed be
fore using the product.
REPAIRS AND MAINTENANCE
Do not try to do repairs or any other maintenance work you do not under
stand.
MODIFICATIONS AND WELDING
Non approved modifications can cause injury and damage. Contact your lo
cal dealer for advice before modifying the product. Before welding on the
product while it is installed on the carrier, disconnect the carrier alternator
and battery. Note that welding of the hammer tools will render them useless
and make the warranty void.
15
Safety
hydraulic breaker

5. OPERATION
5.1 OPERATING INSTRUCTIONS
RECOMMENDED USE
The hammer is designed to be used in breaking concrete, road surface or
asphalt, hard or frozen ground. It is also suitable for light trenching and
benching applications or in ground compacting. It can be also used in break
ing small and soft boulders. Your local dealer will gladly give you more infor
mation.
OPERATING CONDITIONS
Hydraulic oil
In general the hydraulic oil originally intended for the carrier can be used
with this product. See Requirements for hydraulic oil on page 28.
Operating temperature
The operating temperature is 20 °C to 80 °C. If the temperature is lower
than 20 °C, the hammer and tool have to be preheated before any opera
tions can begin, in order to avoid breaking the accumulator's membrane and
the tool. During operation they will remain warm.
Note: The temperature of the hydraulic oil must be monitored. Ensure that
oil grade and monitored oil temperature together guarantee correct oil vis
cosity. See Oil specifications on page 29.
Operation hydraulic breaker
16

PRINCIPLES OF BREAKING
To increase the hammer's working life, pay particular attention to correct
working methods and how to choose the correct tool for the job. There are
essentially two ways of breaking with a hydraulic hammer.
Penetrative breaking (or cutting)
In this form of breaking a moil point or chisel tool is forced inside the mate
rial. This method is most effective in soft, layered or plastic, low abrasive
material. The high impact rate of the small hammers makes them ideal for
penetrative breaking.
CHOOSING TOOLS
Chisel and moil point
lFor sedimentary (e.g. sandstone) and weak metamorphic rock into
which the tool penetrates.
lConcrete.
lTrenching and benching.
It is important to choose a tool, which is suitable for your hammer and for the
application you are working on. The tool selection available depend on ham
mer model. See Tool specifications on page 48.
5.2 DAILY OPERATION
Warn ng! Protect yourself and your ne ghbourhood aga nst fly ng
ch ps of rock. Do not operate the hammer or carr er f someone s too
close to the hammer.
The hammer as a standard assembly, must not be used under water. If
water f lls the space where the p ston str kes the tool, a strong pres-
sure wave s generated and the hammer may be damaged.
Warn ng! To avo d fall ng objects, do not use Product to l ft other prod-
ucts. See L ft ng nstruct ons on page 7.
1
Operation
hydraulic breaker

1. Set the engine speed to the
recommended engine RPM for
correct amount of oil supply.
2. Carefully operate the carrier
controls to place the hammer and
boom into the breaking position.
Quick and careless boom
movements could result in
damage to the hammer.
3. Use the boom to press the
hammer firmly against the object.
Do not pry the hammer with the
boom. Do not press too hard or
too gently with the boom. The
correct force is applied, when the
tires start to lift slightly from the
ground.
4. Place the tool against the object
at a 90 degree angle (see picture
1.). Avoid small irregularities on
the object which will break
easily and cause either idle
strokes or an incorrect working
angle.
5. When demolishing vertical
structures (e.g. brick walls),
place the tool against the wall at
a 90 degree angle.(see picture
2.)
6. Start the hammer.
Operation hydraulic breaker
18
2.
1.
90°
90°

7. A safety screen is recommended to protect the operator from flying
debris. Keep the cabin windows and doors closed during operation.
8. Note: Listen to the hammer's sound when you are using it. If the sound
becomes weaker and the impact less efficient, the tool is misaligned with
the material and/or there is not enough down force on the tool. Realign
the tool and press the tool firmly against the material.
9. Do not strike in one spot for more
than 15 seconds at a time. If the
object does not break, or if the
tool does not penetrate, stop the
hammer and change the position
of the tool. Working too long in
one spot will create stone dust
under the tool. Dust dampens the
impact effect and produces heat.
(see picture 3.)
10. Do not let the tool move outwards from the hammer when it penetrates.
Keep the down pressure on the hammer while breaking.
11. To use the hammer most efficiently when breaking, concentrate on small
steps from the outer edge towards the middle.
12. When breaking hard or frozen ground, use the benching method. Start
with clearing a small area from the edge. Then continue by breaking ma
terial towards the open area.
19
Operation
hydraulic breaker
3.
a. b. c.

13. Stop the hammer quickly. Do not allow the hammer to fall down and
make idle strokes when an object breaks. Frequent idle strokes have a
deteriorating effect on the hammer. If the hammer falls through, the
housing wears out more quickly.
14. When breaking concrete, hard
or frozen ground, never strike
and pry with the tool at the
same time (see picture 4.). The
tool may break. Bending may
be caused by stones inside hard
or frozen ground. Be careful and
stop striking if you find sudden
resistance under the tool.
15. Keep the tool at a 90 degree angle
at all times. If the object moves
or itssurface breaks, correct the
angle immediately. Keep the feed
force andtool aligned. Incorrect
working angle will cause
premature tool failure.
(see picture 5.)
16. Do not use the hammer to sweep the ground of debris. This may damage
the hammer and the housing will wear out more quickly.
Operation hydraulic breaker
20
4.
5.