MB156
MOUNTED
HYDRAULIC BREAKER
USER MANUAL
Safety, Operation and Maintenance
© 2015 Stanley Black & Decker, Inc.
New Britain, CT 06053
U.S.A.
30892 2/2015 Ver. 14
DECLARATION OF CONFORMITY
ÜBEREINSTIMMUNGS-ERKLARUNG
DECLARATION DE CONFORMITE CEE
DECLARACION DE CONFORMIDAD
DICHIARAZIONE DI CONFORMITA
Hydraulic Tools
_______________________________________________________ _______________
I, the undersigned:
Ich, der Unterzeichnende:
Je soussigné:
El abajo firmante:
lo sottoscritto:
Weisbeck, Andy
Surname and First names/Familiennname und Vornamen/Nom et prénom/ Nombre y apellido/Cognome e nome
hereby declare that the equipment specified hereunder:
bestätige hiermit, daß erklaren Produkt genannten Werk oder Gerät:
déclare que l’équipement visé ci-dessous:
Por la presente declaro que el equipo se especifica a continuación:
Dichiaro che le apparecchiature specificate di seguito:
1. Category:
Hydraulic Hammer Breaker
Kategorie:
Catégorie:
Categoria:
Categoria:
2. Make/Marke/Marque/Marca/Marca
Stanley
3. Type/Typ/Type/Tipo/Tipo:
MB156
4. Serial number of equipment:
Seriennummer des Geräts:
Numéro de série de l’équipement:
Numero de serie del equipo:
Matricola dell´attrezzatura:
All
5. Mass/Masse/Masse/Masa/Massa 173 lbs / 79 kg
Has been manufactured in conformity with
Wurde hergestellt in Übereinstimmung mit
Est fabriqué conformément
Ha sido fabricado de acuerdo con
E’ stata costruita in conformitá con
Directive/Standards
Richtlinie/Standards
Directives/Normes
Directriz/Los Normas
Direttiva/Norme
No.
Nr
Numéro
No
n.
Approved body
Prüfung durch
Organisme agréé
Aprobado
Collaudato
EN ISO
EN
Noise Directive
Machinery Directive
12100:2010
982:2008
2000/14/EC:2005
2006/42/EC:2006
Self
Self
Self
Self
6. Special Provisions: None 7. Measurements: Measured Sound Power Level 116 LwA
Spezielle Bestimmungen: Messungen Guaranteed Sound Power Level 120 LwA
Dispositions particulières: Mesures Measured in accordance to Directive 2000/14/EC,
Provisiones especiales: Mediciones
Disposizioni speciali: Misurazioni
8. Representative in the Union: Patrick Vervier, Stanley Dubuis 17-19, rue Jules Berthonneau-BP 3406 41034 Blois Cedex, France.
Vertreter in der Union/Représentant dans l’union/Representante en la Union/Rappresentante presso l’Unione
Done at/Ort/Fait à/Dado en/Fatto a Stanley Hydraulic Tools, Milwaukie, Oregon USA
Date/Datum/le/Fecha/Data 12-19-10
Signature/Unterschrift/Signature/Firma/Firma
Position/Position/Fonction/Cargo/Posizione Director of Product Development
DECLARATION OF CONFORMITY
2 ► MB156 User Manual
WARNING
TABLE OF CONTENTS
DECLARATION OF CONFORMITY .......................................................................................................................... 2
SAFETY SYMBOLS ..................................................................................................................................................4
SAFETY PRECAUTIONS .......................................................................................................................................... 5
TOOL STICKERS & TAGS ........................................................................................................................................8
OPERATION ..............................................................................................................................................................9
TROUBLESHOOTING ............................................................................................................................................15
MAINTENANCE ......................................................................................................................................................16
CHARGING THE ACCUMULATOR .........................................................................................................................17
FLOW CONTROL KIT INSTRUCTIONS .................................................................................................................18
WEAR TOLERANCES ............................................................................................................................................19
PROPER USE & CARE OF TOOL BITS ................................................................................................................. 20
FLOW TEST PROCEDURES .................................................................................................................................. 24
DEFINITION OF TERMS .........................................................................................................................................26
SPECIFICATIONS ................................................................................................................................................... 27
ACCESSORIES.......................................................................................................................................................28
MB156 POWER CELL ILLUSTRATION .................................................................................................................. 29
MB156 PARTS LIST ................................................................................................................................................30
MB156 SIDE PLATES ILLUSTRATION ...................................................................................................................31
IMPORTANT
To ll out a Product Warranty Validation form, and for information on your warranty,
visit Stanleyhydraulics.com and select the Company tab, Warranty.
(NOTE: The warranty Validation record must be submitted to validate the warranty).
SERVICING: This manual contains safety, operation, and routine maintenance instructions. Stanley Hydraulic Tools
recommends that servicing of hydraulic tools, other than routine maintenance, must be performed by an authorized
and certied dealer. Please read the following warning.
SERIOUS INJURY OR DEATH COULD RESULT FROM THE IMPROPER REPAIR OR
SERVICE OF THIS TOOL.
REPAIRS AND / OR SERVICE TO THIS TOOL MUST ONLY BE DONE BY AN
AUTHORIZED AND CERTIFIED DEALER.
For the nearest authorized and certied dealer, call Stanley Hydraulic Tools at the number listed on the back of this
manual and ask for a Customer Service Representative.
MB156 User Manual ◄ 3
DANGER
WARNING
CAUTION
CAUTION
NOTICE
IMPORTANT
SAFETY SYMBOLS
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair actions which, if not strictly followed, could result in a life-threatening situation, bodily injury or damage to equipment.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death.
This safety alert and signal word indicate an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
This safety alert and signal word indicate a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This safety alert and signal word indicate a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This signal word indicates a potentially hazardous situation which, if not avoided, may result in property damage.
This signal word indicates a situation which, if not avoided, will result in damage
to the equipment.
This signal word indicates a situation which, if not avoided, may result in damage to the equipment.
Always observe safety symbols. They are included for your safety and for the protection of the tool.
LOCAL SAFETY REGULATIONS
Enter any local safety regulations here. Keep these instructions in an area accessible to the operator and maintenance personnel.
4 ► MB156 User Manual
WARNING
Do not operate the breaker unless the
following safety instructions have been
thoroughly read and understood! Read this
manual before installing, operating or
maintaining this equipment.
• A flying projectile from the breaker, breaker
tool, rock or other material may enter the
operator's comp artment and cause serious
or fatal injury to the operator. Personal
protection equipment must be used.
• A flying projectile from the breaker, breaker
tool, rock or other material may cause
serious or fatal injury to bystanders. Never
operate the breaker when bystanders are in
the work area.
• On some machines/carriers, the breaker
can enter the operator's compartment if it
breaks loose and swings toward the
operator. Make sure that suitable impact
shield s are used when operating the
breaker with this type of eq uipment.
• Do not operate the breaker unless all safety
decals described in this manual are in
place. The decals must be inspected
periodically to ensure that all wording is
legible. The decals must be replaced if
illeg ible. Replacement decals can be
obtained from your authorized Stanley
Distributor.
• When operating the breaker you must use
ear protection, eye protection, and
breathing protection.
Read the Manual
Wear Eye
Protection
Wear Hearing
Protection
Wear Breathing
Protection
SAFETY PRECAUTIONS
WARNING
MB156 User Manual ◄ 5
SAFETY PRECAUTIONS
Tool operators and maintenance personnel must always
comply with the safety precautions given in this manual
and on the stickers and tags attached to the tool and
hose.
These safety precautions are given for your safety. Review them carefully before operating the tool and before
performing general maintenance or repairs.
Supervising personnel should develop additional pre-
cautions relating to the specic work area and local
safety regulations. If so, place the added precautions in
the space provided in this manual.
The MB156 Mounted Hydraulic Breaker will provide
safe and dependable service if operated in accordance with the instructions
given in this manual. Read
and understand this manual and any stickers and
tags attached to the tool
and hoses before operation. Failure to do so could
result in personal injury or
equipment damage.
Check the rules and regulations at your location. The
rules might include an employer’s work safety program.
Regulations may identify hazards such as working
around utility supply lines or hazardous slopes.
BE THOROUGHLY TRAINED BEFORE
OPERATING THE UNIT ALONE
• Operator training must start in an area without bystanders and use all the controls until he/she can
control the machine fully under the conditions of the
work area.
• When learning to operate a machine, do so at a slow
pace.
KNOW THE WORK CONDITIONS
• The operator must know any prohibited uses or
work areas for the machine. For example, excessive slopes and poor or dangerous terrain conditions must be avoided.
OBEY SAFETY RULES
• Operate the breaker in accordance with all laws and
regulations which affect you, your equipment, and
the work site.
• Do not operate the breaker until you have read this
manual and thoroughly understand all safety, operation and maintenance instructions.
• The operator must be familiar with all prohibited
work areas such as excessive slopes and dangerous terrain conditions.
• Do not operate the breaker until you have read the
carrier equipment manual and thoroughly understand all safety, operation and maintenance instructions. The word “carrier”, as used in this manual,
means a backhoe or excavator or similar equipment
used to operate the breaker.
• Ensure that all maintenance procedures recommended in this manual are completed before using
the equipment.
• The operator must not operate the breaker or carrier
if any people are within the area where they may be
injured by ying debris or movement of the equipment.
• Know the limits of your equipment.
• Establish a training program for all operators to en-
sure safe operation.
• Warning: Use of this tool on certain materials during
demolition could generate dust potentially containing a variety of hazardous substances such as asbestos, silica or lead. Inhalation of dust containing
these or other hazardous substances could result
in serious injury, cancer or death. Protect yourself
and those around you. Research and understand
the materials you are cutting. Follow correct safety
procedures and comply with all applicable national,
state or provisional health and safety regulations
relating to them, including, if appropriate arranging
for the safe disposal of the materials by a qualied
person.
6 ► MB156 User Manual
SAFETY PRECAUTIONS
• Do not operate the tool unless thoroughly trained or
under the supervision of an instructor.
• Become familiar with the carrier controls before operating the carrier and the breaker.
• When operating the breaker you must use ear protection, eye protection, and breathing protection.
• While learning to operate the breaker and carrier, do
so at a slow pace. If necessary, set the carrier mode
selector to the slow position.
• Make sure all controls (levers and pedals) are in the
NEUTRAL position before starting the carrier.
• While operating the breaker and carrier, keep hands
and feet on the controls at all times.
• Before leaving the carrier, always lower the boom
and insure the carrier is stable. Never leave the machine with the engine running. ALWAYS ENGAGE
THE PARKING BRAKE.
• Stop the engine before attempting to make any repairs, adjustments or servicing to either the carrier
or the breaker.
• Do not operate the tool at oil temperatures above
190 °F/88 °C. Operation at higher temperatures
can damage the internal components of the breaker
and carrier and will result in reduced breaker performance.
• Do not operate a damaged, leaking, improperly adjusted, or incompletely assembled breaker.
• Do not modify the breaker in any manner.
• Use only tool bits supplied by Stanley Hydraulic
Tools. Use of tool bits supplied by another manufacturer may damage the breaker and will void the
warranty.
• To avoid personal injury or equipment damage, all
breaker repair, maintenance and service must only
be performed by authorized and properly trained
personnel.
• If you do not understand how to safely operate your
breaker, contact an authorized Stanley Dealer for
assistance.
• Keep this manual with the breaker.
• Do not operate this equipment if you are taking med-
ication which may affect your mental judgement or
physical performance.
• Do not operate this equipment if you are under the
inuence of drugs or alcohol.
MB156 User Manual ◄ 7
Lwa
116
68594
Sound Power Level—116 dBA
TOOL STICKERS & TAGS
NITROGEN ONLY
MODEL NO:
SERIAL NO:
OPERATING WEIGHT:
INPUT FLOW:
CIRCUIT RELIEF PRESSURE:
Stanley Hydraulic Tools
Division of The Stanley Works
3810 SE Naef Road
Milwaukie, OR 97267 USA
47352
Lifting Point Decal
350 PSI
27711
Accumulator Pressure Sticker—350 PSI
29704—MB15614 only (Not Shown)
Accumulator Pressure Sticker—250 PSI
66764
Made in USA Decal
29175
CE Specication Plate
68593—MB15641 only
CE Specication Plate
47351
Composite Warning Sticker
P/N 73003
P/N 73008 P/N 73015
8 ► MB156 User Manual
GREASE
TOOL
BIT
WHEN
DRY
2
P/N 72074 MB1561SBN Only
250 mm/10 in.
To ol B i t
Gr ease
Thi s Ar ea
of Bit
OPERATION
PRE-INSTALLATION INSTRUCTIONS
BACKHOE OR EXCAVATOR SIZE
Check the Specications section of this manual to determine correct carrier size, hydraulic ow and pressure
requirements.
WARNING
If hydraulic pressure, hydraulic back-pressure,
hydraulic ow or carrier weight class are exceeded,
the tool warranty is void.
EXISTING EQUIPMENT HYDRAULICS VS.
APPLICATION ATTACHING KITS
Using existing equipment hydraulic auxiliary systems
for operating hydraulic tools could cause problems for
the hydraulic tool and the hydraulic system if not set up
properly. Simply plugging into the hydraulic system with-
out conrming pressure and ow to the hydraulic tool is
not a good practice. Spare spool valves, dipper circuits,
etc., are just a few examples of easily accessible hydraulic circuits which could prove to cause problems for
hydraulic tool usage.
Stanley Hydraulic Tools has for many years developed
ATTACHING KITS for adapting to existing hydraulic systems of many popular carriers.
If your equipment does not contain an attaching kit, ask
your Stanley dealer for information, installation, and
pricing on a kit which matches your equipment needs.
PRE-OPERATION PROCEDURES
NITROGEN CHARGE
The breaker has been properly charged with nitrogen at
the factory and is ready to use.
TOOL BIT LUBRICATION
Grease the top 6 in. / 150 mm of the breaker tool bit before installing. During operation, the tool can be greased
through the grease tting. Grease is required.
Make sure the tool bit is against the piston by placing the
tool bit against the ground and then putting down pressure on the breaker. See the illustrations below.
6 inches/150 mm
Figure 1. Greasing the Top of the Tool Bit
TEST THE HYDRAULIC SYSTEM
1. Have your Stanley dealer test the carrier hydraulic
system to make sure the system is operating at the
manufacturers specied capacity and pressure ratings.
2. Be sure the uid in the hydraulic system is ltered
to at least 10 micro-meters. (Particles found in uid
should not exceed 10 micro-meters in size.)
3. Check the hydraulic lter. Replace the lter if dirty or
deteriorated.
4. Have your Stanley dealer test the circuit to which
the breaker will be connected to make sure that the
circuit is supplying the specied ow and pressure
rating for the breaker. See the Specications section
of this manual.
WARNING
Greasing the tool bit without down pressure on the
breaker results in grease lling the space between
the piston and the tool bit. When the breaker is next
activated, the piston will strike the grease at a speed
which will pressurize the grease resulting in seal and
grease zerk failure.
MB156 User Manual ◄ 9
OPERATION
Grease Will Fill
This Space
Piston in Down Position
Against Tool Bit
Tool Stop
Lower Bushing
Tool Bit
Piston Not Against
Tool Bit Leaving Space
Between the Piston and
Bit
Tool Stop
Lower Bushing
Tool Bit
2. With the carrier at idle and the breaker suspended
in the air or with minimal down pressure, turn on the
breaker to gradually warm up its internal components.
3. When the hydraulic system and breaker are warm,
proceed with operation.
LONG TERM STORAGE
1. Remove the tool bit, clean the tool stop and the lower bushing. Thoroughly coat the surfaces of the tool
stop and the lower bushing with grease.
2. If hoses are attached to the breaker, install plugs
on the hose ends. If hoses are removed from the
breaker, install plugs on the hose ends and install
plugs in the breaker IN and OUT ports.
3. Store the breaker in a vertical position. Do not store
the breaker horizontally for extended periods.
OPERATING A BREAKER
PREPARATION FOR USE
Read the section in this manual titled Pre-Operation Procedures before operating a breaker. Failure to follow the
preparation instructions can result in severe damage to
the breaker and carrier and void the warranties of both.
Figure 2. Positioning the Tool Bit with Lubrication
SECURING THE TOOL BIT
1. The tool retainer (9) is shipped installed in the
breaker (see parts illustration).
2. Drive out the tool retainer using a punch and hammer.
3. Grease the top area of the tool bit as shown in Figure 1.
4. Install the tool bit making sure the notch is aligned
with the lower body retainer pin hole.
5. Install the tool retainer.
WARNING
Always wear eye protection when installing or
removing the tool retaining pin.
LOW TEMPERATURE WARM-UP
PROCEDURE
1. After starting the carrier, warm-up the hydraulic system at engine idle until hydraulic lines are warm to
the touch.
POSITIONING THE CARRIER
SKIDSTEER LOADERS
With the breaker tool in place on the material to be
worked, position the skidsteer loader arms and the
breaker bracket so the breaker is almost vertical and the
front tires of the skidsteer are off of the ground.
Keep lowering the loader arms as the tool penetrates
the work material so the skidsteer weight stays on the
tool. The breaker is more efcient when adequate down
force is applied.
10 ► MB156 User Manual
Apply down pressure.
Apply down force.
Break near the edge.
OPERATION
Figure 5. Excavator
Figure 3. Skidsteer Loader
BACKHOES
With the breaker tool in place on the material to be
worked, position the backhoe so the boom is halfway up
(45°) and the dipper holds the breaker almost vertical.
Lower the loader bucket until the weight is off the front
tires.
Figure 4. Backhoe
Apply down force to the boom/dipper until the rear of the
backhoe is raised off the ground. Rear tires and stabilizers should be off the ground so the total rear weight of
the backhoe is on the breaker tool. The breaker is more
efcient when adequate down force is applied.
EXCAVATORS
With the breaker tool in place on the material to be
worked, position the excavator so the dipper is at approximately 45° and the breaker is almost vertical. The
tracks of the excavator should be in line with the boom
and the breaker.
POSITIONING THE BREAKER TOOL ON
THE WORK MATERIAL
Position the tool bit near the edge of the work material,
not in the center or far from the edge. Position the tool
6–18 inches (depending on the material) from the edge.
Breaking off smaller pieces of rock or concrete usually
accomplishes more than trying to break larger pieces.
Figure 6. Position the Tool Bit
On at material or rock, the breaker should be vertical
or “curled” back slightly to direct the impact force downward and toward the backhoe. This directs the force
back toward the edge of the work material. If the tool
is positioned in the center of the work, or too far from
the edge, the energy will be absorbed into the material
without cracking it. Do not run the breaker longer than
15–20 seconds. If breakout does not occur within this
time, move the breaker to another position.
MB156 User Manual ◄ 11
Do not break continuously
in one place.
CAUTION
OPERATION
On at material such as concrete runways, starting to
break in the middle of the material may cause vibrations
to be transmitted throughout the breaker and excavator
because the material has no place to break to. Always
try to start at a point which will permit the material to
break out.
MAINTAIN DOWN PRESSURE
Maintaining hard contact with the surface of the material
to be broken in addition to maintaining adequate “down
force” is very important. Always keep “down pressure”
or “down force” on the point of the breaker by lifting the
wheels, tracks, or stabilizers slightly above the ground.
This method takes the “slack” out of the bracket and
boom pivots, and reduces the impact on the pivots in
the boom.
The operator needs to be constantly aware of the amount
of down pressure being applied and be able to adjust it
if necessary. Not enough down pressure results in low
production and accelerates wear and tear on the equipment. Too much down pressure may cause the breaker
housing to violently crash into the broken material when
“break-through” occurs.
In any breaking job, the operator should make every effort to “follow” the breaker with “down pressure” as the
machine breaks farther into the material. The breaker
should be stopped as soon as “break-through” occurs or
if it is apparent that good solid blows are not occurring.
BREAKING
The operator should note the sound of the blow when
the breaker is running. With experience, the operator will
be able to tell the difference between a good solid blow
and a hollow sounding blow. A hollow blow means that
solid blows are not occurring and breaker should be repositioned.
Continuous tool penetration usually does not do much
good. If the material does not break with 3–6 inches of
tool penetration, it usually won’t break with full penetration. The time used for additional penetration could be
better used to strike blows in another place.
Many materials do not respond well to continued hammering in one place. The breaker tool should be repositioned on the work each time the tool penetrates but
does not crack the material.
Do not break continuously
in one place
Figure 7. Breaking
Continuous penetration in the same area for lengthy
periods will create excessive temperatures at the tip
of the tool bit resulting in loss of temper (hardness)
of the bit, mushrooming of the tip of the bit and may
lead to failure of the bit.
Use a “scoring” method of breaking when cracking the
material becomes difcult. This technique involves striking the rock or concrete at several places along a line
where you want the crack to occur. Most materials break
sooner when struck several places along a line than
when struck repeatedly in one location. On each line,
the breaker tool should be continually repositioned.
Practice determines the best length of time to stay in
one spot (15–20 seconds) and how far to move the
breaker tool.
12 ► MB156 User Manual
Scoring with the breaker
Breaker tool bit binding
CAUTION
OPERATION
Figure 8. Scoring with the Breaker
Breaker tool binding can cause erratic breaker operation and premature wear on the tool shank. Breaker tool
binding is caused by failure to direct the down force in
the direction of the tool bit.
Figure 9. Breaker Tool Bit Binding
Do not pry with bit and breaker. The tool bit may
break causing injury.
Excessive side force cocks the tool in its bore, prevents
proper movement and causes premature tool shank and
bushing wear. Since the breaker tool bit must be pushed
up into the breaker to operate, a binding tool prevents
the breaker from operating correctly. Binding also causes
the tool bit and tool bushings to seize and often results
in breakage of one or more breaker components.
Always direct the down pressure force in a line toward
the point of tool contact with the work.
Moving rocks with the tool bit is another method of binding the tool bit. This practice should be avoided as it may
cause tool bit failure.
Rebar reinforced concrete introduces the problem of
concrete chunks being held together by the rebar after
the concrete has been broken. The best approach to this
problem is to use a chisel point tool which permits cutting the rebar with the breaker. Another method is to periodically cut the rebar with an oxy-acetylene torch
BLANK FIRING
To understand “Blank Firing”, the operator needs to be
aware that the tool bit is able to drop down in the lower
body cavity, far enough so that the piston cannot strike it,
when the tool bit is not in contact with the work surface.
“Blank Firing” occurs whenever the breaker is operating
and the piston is not able to strike the tool bit solidly or
not strike the tool bit at all. “Blank Firing” accelerates
wear and tear on breaker and carrier components and
may result in failure of one or more components. Excessive “Blank Firing” may be considered equipment abuse
and may result in voiding warranties.
Break-through or difcult surface contact results in
“Blank Firing” when the material being broken fractures
and the tool bit is no longer in “hard contact” with the
material but is still pushed high enough in the lower body
cavity so that the piston can strike it. In this position, the
piston strikes the tool bit and the tool bit, in turn, is driven
against the retaining pins because it is not in sufcient
contact with the material to be broken. The energy is absorbed by the retaining pins, other breaker components,
and the carrier boom components. “Blank Firing” of this
type can be experienced in trench work where obtain-
ing striking contact with the work surface is difcult or
the wrong tool bit is used, or in at rock work where the
operator fails to stop operation of the breaker when slippage, fracturing or material break-through occurs.
“Blank Firing” as a result of operator error occurs when
the tool bit is not in contact with the work surface to be
broken and is allowed to drop down in the lower body
cavity so that the piston is not able to strike it. Instead,
the downward movement of the piston will be stopped
by an internal oil cushion located at the bottom of the
piston’s stroke and the energy of the piston will be absorbed by breaker components and excavator boom
components. “Blank Firing” of this type can be experienced when the operator fails to stop operation of the
breaker when the material fractures or material breakthrough occurs, or during re-positioning of the breaker.
MB156 User Manual ◄ 13
Do not use und erwater without supplying air to breaker.
CAUTION
IMPORTANT
OPERATION
While “Blank Firing” cannot always be avoided, it can be
kept to a minimum by avoiding the above conditions as
much as possible.
UNDERWATER USAGE
Underwater usage of the breaker will cause damage
to internal components. Even if the breaker is partially
submerged, water is introduced to an area between the
tool bit and piston. On the piston down cycle, the water
becomes compressed and damages adjacent components.
Do not use underwater without supplying air to breaker
Figure 10. Underwater Restrictions
No part of the breaker may be submerged in
water. Underwater usage of the breaker will cause
internal damage to the breaker. Consult Stanley for
modications and specic warranty coverage if you
have an underwater requirement.
GREASE THE BIT
Grease should be applied to the upper end of the breaker tool bit each time it is installed. Thereafter, the tool
should be greased at the tting to reduce wear in the
lower body and bushings of the tool. See Greasing The
Tool Bit in the sections titled Pre-Operation Procedures.
UNDERWATER USE
No part of the Stanley MB156 Breaker may be
submerged in water without rst modifying the
breaker for underwater use. Use of the breaker
underwater requires an underwater application kit
and an air compressor capable of producing 150 cfm
@ 75 psi. Underwater usage of the breaker without
the underwater kit and air compressor will cause
internal damage to the breaker. See the Accessories
section of this manual to order the underwater kit.
14 ► MB156 User Manual
TROUBLESHOOTING
This section describes how to nd and resolve problems
users may experience. If a situation occurs that is not
covered, call your Stanley Customer Service representative for assistance.
WARNING
Inspecting the tool or installing parts with the
hydraulic hoses connected can result in severe
personal injury or equipment damage. To prevent
accidental startup, disconnect the hydraulic power
before beginning any inspection or installation task.
PROBLEM CAUSE SOLUTION
Breaker will not re. Low hydraulic oil level. Fill reservoir.
No ow to breaker. Have hydraulic circuit tested by
Main relief set low.
Internal damage. Have unit serviced by an authorized
Damaged quick couplers. Replace.
Breaker runs slowly. Low hydraulic ow Have hydraulic circuit tested by an
Excessive heat build up.
Excessive nitrogen pressure. Have unit serviced by an authorized
Internal leakage.
Breaker runs erratically. Low or excessive back-pressure. Have carrier serviced by an authorized
Damaged switch or connection.
Relief set too low.
Internal damage.
Tool binding. Add grease to tool shank. Do not pry
Breaker runs but at reduced
power.
Breaker leaks oil around tool bit
and tool bushing.
Hydraulic system overheats. Main relief set low. Have unit serviced by an authorized
Low accumulator charge. Have unit serviced by an authorized
Excessive back-pressure.
Relief set too low.
Lower seals failed. Have unit serviced by an authorized
Insufcient cooling capability in
hydraulic circuit.
Line/hose size too small.
Excessive back-pressure.
If symptoms of poor performance develop, the following
chart can be used as a guide to correct the problem.
When diagnosing faults in operation of the tool, always
check that the hydraulic power source is supplying the
correct hydraulic ow and pressure to the tool as listed
in the table below. Use a owmeter known to be accurate. Check the ow with the hydraulic oil temperature at
least 80 °F/27 °C.
authorized dealer/distributor per
approved procedure.
dealer/distributor.
authorized dealer/distributor per
approved procedure.
dealer/distributor.
dealer/distributor.
while operating.
dealer/distributor.
dealer/distributor.
dealer/distributor.
MB156 User Manual ◄ 15
MAINTENANCE
DAILY MAINTENANCE CHECKS
• Check for loose or missing fasteners. Tighten or replace as needed.
• Inspect tool retaining pins and pockets for wear.
• Check for hydraulic leaks at all ttings and hoses.
Replace any defective hoses.
• Apply grease to the grease tting in the lower body
each morning. Grease as needed throughout the
work day.
TOOL STOP AND LOWER BUSHING
Inspect the tool stop and lower bushing for excessive
galling and metal pickup on the tool bit. Also check for
cracks. If cracks are present, the part must be replaced.
The extent of wear of the tool stop and lower bushings
and the tool bit can be checked by moving a NEW tool
bit back and forth and measuring the gap between the
tool bit and the lower bushing. If the gap is more than
.250 in./6 mm, the upper bushing, lower bushing and
tool bit should be replaced. A gap in excess of .250 in./6
mm will cause damage to the piston. Do not just replace
the tool bit or the lower bushing individually as this will
result in premature wear of the replaced component. It is
recommended to replace ALL worn components.
11 inches
Figure 11. Measuring Tool Bit Gap
16 ► MB156 User Manual
CHARGING THE ACCUMULATOR
The tools required to charge the breaker are shown below.
These tools (except the nitrogen tank) are available in the
MB156 Service Kit. When using the tools, be sure they
are clean as well as the breaker charge valve. Dirt can
contaminate the charge valve and cause leakage.
CHECKING THE NITROGEN CHARGE IN THE BREAK-
ER
1, Remove the protective plug from the charge valve using
a 3/16 inch hex wrench.
2. Hold the chuck end of the tester and turn the gauge fully
counter clockwise to ensure the plunger inside the chuck is
completely retracted.
3. Screw the tester into the breaker charge valve using the
chuck for turning. Do not use the gauge for turning as this will
advance the plunger in the chuck. Tighten the chuck lightly
against the breaker charge valve.
4. Turn the gauge clockwise to advance the plunger until a
pressure is indicated on the gauge. Do not overtighten.
5. If the pressure is correct, unscrew the gauge to retract the
plunger. Then, loosen and remove the tester from the charge
valve. If the pressure is not correct, proceed to step 6.
CHARGING THE BREAKER WITH NITROGEN
6. Connect the charge hose assembly to the charging valve on
the tester. Make sure the valve on the charge hose assembly
is closed. Open the valve on the nitrogen bottle.
7. Very slowly open the valve on the charge hose assembly
and slowly meter the nitrogen into the breaker charge valve
until the tester reads the correct charge pressure. SEE
CHARGE PRESSURE SPECIFICATION BELOW.
8. When the correct pressure is obtained, close the valve
on the nitrogen bottle. Unscrew the gauge to retract the
plunger. Loosen and remove the tester from the charge valve.
Before, replacing the protective plug, inspect the plug o-ring.
If damaged or deformed, replace the plug.
CHARGE PRESSURE SPECIFICATION FOR THE MB156.
Gauge
350 psi/24 bar (250 psi/17 bar if less
than 6 gpm/23 lpm or less than 2000
psi) at 21
º C/70º F with NO FORCE ON
THE TOOL BIT.
CHARGING THE ACCUMULATOR
The tools required to charge the breaker are shown below. These tools (except the nitrogen tank) are available
in the MB156 Service Kit. When using the tools, be sure
they are clean as well as the breaker charge valve. Dirt
can contaminate the charge valve and cause leakage.
CHECKING THE NITROGEN CHARGE IN
THE BREAKER
1. Remove the protective plug from the charge valve
using a 3/16 inch hex wrench.
2. Hold the chuck end of the tester and turn the gauge
fully counter clockwise to ensure the plunger inside
the chuck is completely retracted.
3. Screw the tester into the breaker charge valve using the chuck for turning. Do not use the gauge for
turning as this will advance the plunger in the chuck.
Tighten the chuck lightly against the breaker charge
valve.
4. Turn the gauge clockwise to advance the plunger
until a pressure is indicated on the gauge. Do not
overtighten.
Nitrogen Bottle (locally obtained)
Nitrogen Bottle (locally obtained)
5. If the pressure is correct, unscrew the gauge to retract the plunger. Then, loosen and remove the tester from the charge valve. If the pressure is not correct, proceed to Step 6.
CHARGING THE BREAKER WITH
NITROGEN
6. Connect the charge hose assembly to the charging valve on the tester. Make sure the valve on the
charge hose assembly is closed. Open the valve on
the nitrogen bottle.
7. Very slowly open the valve on the charge hose
assembly and slowly meter the nitrogen into the
breaker charge valve until the tester reads the correct charge pressure. SEE CHARGE PRESSURE
SPECIFICATION BELOW.
8. When the correct pressure is obtained, close the
valve on the nitrogen bottle. Unscrew the gauge to
retract the plunger. Loosen and remove the tester
from the charge valve. Before, replacing the protective plug, inspect the plug O-ring. If damaged or deformed, replace the plug.
350 psi/24 bar (250 psi/17 bar if
350 psi/24 bar (250 psi/17 bar if less
than 6 gpm/23 lpm or less than 2000
less than 6 gpm/23 lpm or less
psi) at 21
than 2000 psi) at 70 ºF/21 ºC with
THE TOOL BIT.
NO FORCE ON THE TOOL BIT.
º C/70º F with NO FORCE ON
505232 Charge Hose
505232 Charge Hose Assy
(includes gauge, valve, hose
Assy (includes gauge,
and charge valve adapter)
valve, hose and charge
valve adapter)
Nitrogen Charging Equipment
Nitrogen Charging Equipment
28257 Tester
28257 Tester
Figure 12. Charge Pressure Specication For the MB156
Gauge
Gauge
Charging Valve
Charging Valve
Charging Valve
28257 TESTER
28257 TESTER
28257 TESTER
Chuck
Chuck
Chuck
Plunger
Plunger
Plunger
MB156 User Manual ◄ 17
4
R
S
P
T
3
5
8
2
1
6
7
FLOW CONTROL KIT INSTRUCTIONS
The Flow Control Kit is an option for Skid Steer Models.
The Flow Control Kit regulates the ow from the skid
steer hydraulics to the breaker to prevent over-speeding
of the breaker. Follow the instructions below to install
the kit.
• Install the ow control block between the breaker and
the loader’s hydraulics using the 7/16 in. capscrews,
washers, and nuts provided. (Torque to 41 ft-lbs)
• Connect the hoses.
The parts list for the Flow Control Kit is shown below.
HOSE ROUTINGS
R = Return. Route to the breaker OUT port.
S = Supply. Route to the breaker IN port.
P = Pressure. Route to the tractor’s hydraulic pressure.
T = Tank. Route to the tractor’s hydraulic reservoir.
ITEM
NO.
1 34621 1 FLOW CONTROL BLOCK
2 34839 6 WASHER
3 371516 3 NYLOCK NUT
4 02773 4 ADAPTER
5 58653 1 ORIFICE LOCATED UNDER
6 58652 3 CAPSCREW
7 58654 2 HOSE
8 58655 2 HOSE
18 ► MB156 User Manual
PART
NO. QTY DESCRIPTION
FITTING DESIGNATED AS "S"
Figure 13. Flow Control Kit
WEAR TOLERANCES
NEW REJECT LIMIT
LOWER BUSHING (ITEM 6)
1.770 in./45 mm 1.645 in./42 mm
FIGURE 14. LOWER BUSHING
TOOL STOP (ITEM 7)
A) 1.770 in./45 mm Inside
Diameter
B) .47 in./12 mm Depth B) .35 in./9 mm Depth
A) 1.645 in./42 mm Inside
Diameter
RETAINER PIN (ITEM 9)
.995 in./25 mm Outside
Diameter
.91 in./23 mm Outside
Diameter
RETAINER PIN (ITEM 12)
Wear Areas
A
C=Measure at 1.2 in./30 mm
C
B
FIGURE 15. TOOL STOP
FIGURE 16. RETAINER PIN
.312 in./8 mm Outside
Diameter
.242 in./6 mm
Outside Diameter
PISTON (ITEM 20)
1.525 in./39 mm Depth 1.485 in./38 mm
Wear Limit
New Part
FIGURE 17. PISTON
MB156 User Manual ◄ 19
PROPER USE & CARE OF TOOL BITS
Tool bits are made and heat treated to specication.
Tool bits, however well made, are wear parts, and are
used in the most destructive applications. Even when
the hydraulic breaker is used properly, and the operator
is an experienced one, a tool bit may become damaged.
When a tool bit has been damaged, it is useful to determine the cause immediately in order to prevent the
damage from occurring again.
All Stanley tool bits are machined and hardened for
maximum performance. Care must be taken to maintain
the tools original condition for optimum productivity and
life expectancy. It is not uncommon for an operator who
is unfamiliar with using a hammer to break a point. This
is part of the learning experience.
Listed below are several methods to determine tool failure and will quickly aid in warranty determination.
TOOL FAILURE NOT COVERED
UNDER WARRANTY
BLANK FIRING OR FREE RUNNING
This occurs when the tool is not in proper contact with
the work, thus causing the energy produced by the hammer to be concentrated on the tool retainer(s) and the
retainer slot(s) on the tool itself. Caution should be used
to prevent the hammer from sliding off slanted surfaces
or when breaking through thin material.
The illustration below is typical of the kind of breakage
that occurs from excessive blank ring.
Worn-out retainer pin(s) will cause uneven loading on
the pin(s) themselves, causing failure of the tool or retainer pin(s). This will also cause excessive wear to the
front bushing(s).
METAL-TO-METAL CONTACT
Extreme caution should be used to avoid scratches or
gouges on the surface of the tool. These areas create a
stress concentration Metal-to-Metal Contact point, thus
weakening the tool.
Another form of metal-to-metal contact is galling, which
usually occurs from the lack of lubrication. Special care
should be taken to keep the tool shank lubricated every
two (2) to three (3) hours.
Steel failures that were caused by surface damage take
two main forms. The simplest form is caused by deep
scratches on working steel surface. The broken surface
has a shell pattern around the starting point of failure,
similar to the one in the fatigue failure. The other parts of
the broken surface are brittle. These failures work slowly
through the steel until it suddenly parts completely.
The second form of failure caused by surface damage
occurs when there are deep scratches on working steel
surface and there was also excessive bending stress.
The broken surface also shows the shell pattern, but the
other parts of the broken surface are brittle and usually
have a “lip” like that in a stress failure.
Figure 18. Excessive Blank Firing Breakage
WORN-OUT FRONT BUSHING(S) OR
RETAINER PIN(S)
Worn-out front bushing(s) will cause the tool to become
misaligned inside the hammer. This misalignment will
cause uneven contact between the piston and tool, thus
causing stress to concentrate on one particular area of
the tool. This can also cause the tool to bind inside the
hammer. Call your dealer for acceptable wear allowances.
20 ► MB156 User Manual
Figure 19. Metal-to-Metal Contact Examples
PROPER USE & CARE OF TOOL BITS
In its most extreme forms, the combination of surface
damage and severe bending can quickly break even the
best working steels.
The illustrations below show examples of severe stress
breaks.
Figure 20. Severe Stress Breaks
PRYING
This is the most common cause of tool failure. Even
when there is no surface damage, the stress from prying can easily break a working steel. This kind of failure
generally results from any type of side pressure such as
an incorrect breaking angle or from using the tool to reposition material. The tool should not be used as a pivot
point when repositioning the carrier. The power generated by the carrier will far exceed the strength of the tool.
As the next illustration shows, fatigue failures take many
forms, but they all exhibit similar features. Generally, the
broken surface is brittle and has a “lip” like that in the
bending failure, even though, in some cases, the lip has
been broken.
Figure 23. Fatigue Failures
CORROSION
Tools should be greased and stored out of the weather.
Corrosion tends to accelerate the fatigue fractures of the
tool.
MUSHROOMING
Driving the tool into a hard material for a long period of
time generates an intense heat, indicated by a blue tone
just above the point. This will soften the steel and cause
the point to fold over or mushroom the end of the tool.
Avoid hammering in one location for too long. If material
does not break after a short period (approximately 15 to
20 seconds), reposition the tool.
Figure 21. Prying Damage Example
Similar failures can also occur when the steel is used
with extreme down pressure, and the steel repeatedly slips off the work at an angle, or the material, itself
moves from under the working steel.
Figure 22. Extreme Down Pressure Breakage
Figure 24. Mushrooming
If the overheated steel is suddenly cooled by being
dipped in standing water, for example, the metal will
harden and become brittle. These are some examples
of failure caused by temper changes occurring on the
job.
MB156 User Manual ◄ 21
PROPER USE & CARE OF TOOL BITS
TOOL FAILURE COVERED UNDER
WARRANTY
INTERNAL MATERIAL FLAW
This failure occurs when a foreign material is rolled into
the steel during the manufacturing process, causing an
imperfection in the internal material aw grain. The result is an inherent weakness in the tool shank and eventual breakage.
The fatigue failure is started by the defects within the tool
bit. The broken surface exhibits a shell pattern around
the starting point of failure, like that in the fatigue failure.
The other parts of the broken surface are brittle.
This is the only kind of tool bit failure that is always
covered under warranty.
Look for surface cracks, galling, or gouge marks. Breaks
that start as surface damage have a “sea shell” pattern,
with the damaged spot at the center. A large “sea shell”
indicates a slow growing break; a small one indicates
one compounded by side stress.
Stress failures start small, and spread into the center
of the steel. In a stress failure, the coarser the grain,
the greater the stress was, and the more rapid was the
failure.
• Failures in this area are usually the result
of blank ring, worn bushing(s), worn re-
tainer pin(s) or the lack of lubrication.
• Failures in this area are usually the result
of worn retainer pin(s) or blank ring.
• Failures in this area are usually the result
of prying, metal-to-metal contact or corrosion. Prying failures often exhibit a shelllike formation near the edge of the steel
diameter where the break began, and a
“tail” opposite that where the remaining
steel bent and tore.
Figure 25. Internal Material Flaw
As a rule, working steel failures can be diagnosed by
looking at the break itself, and at the place on the steel
where the break occurred. Discoloration, like “rainbow”
effects or blue bands, is the result of extreme heat.
• Failures in this area are usually the result
of heat build-up, mushrooming, or improper contact with the work.
Figure 26. Diagram of Tool Bit Failures
22 ► MB156 User Manual
PROPER USE & CARE OF TOOL BITS
Stanley Breakers are available with several different types of tool bits. The most common are the moil, chisel and
the blunt. Each of these working steels has its own purpose as described below:
To obtain the maximum production from the breaker, it is important to select the proper working steel. Consult your
Stanley representative for assistance in selecting the proper working steel for your application.
MOIL
This is by far the most popular
working steel. It is a general
purpose point used to break
anything from concrete to hard
rock. Its pencil-type point is
used to fracture the material.
The tool is best where penetration speed is important.
CHISEL
This style of point is used generally used for trench work,
where a controlled break is required, and for rock breaking
on materials with a denite line
of cleavage. A chisel bit also
works well in softer concretes
where a moil might penetrate
quickly, but not cause a fracture line.
BLUNT
This at type of point is used to
break softer material such as
coal or shale. A moil or chisel
will tend to punch holes in this
type of material, where a at
blunt will shatter the material.
It is also useful when breaking irregularly shaped material
where its broad tip makes it
easier to position.
MB156 User Manual ◄ 23
FLOW TEST PROCEDURES
The correct performance of this procedure will verify if
the auxiliary circuit of the carrier is adequate to properly
operate a Stanley attachment.
This procedure is generic in form. It is the end users
responsibility to ensure that this procedure will work with
his specic type of equipment.
If an adequate ow meter is not available contact your
Stanley Hydraulic Distributor for assistance.
TEST PROCEDURE
1. With the auxiliary circuit (or kit) completely installed
connect the ow meter between the tool inlet and
outlet hoses.
NOTE:
Always use the hoses that are supplied for the at-
tachment and make sure the machine hydraulic
oil is between 90 to 120 °F. This will assure correct
readings and adjustments.
2. With the machine setting at the mode that’s going to
be used to operate the attachment record the GPM
_____.
Locate the correct ow for the attachment in the
manual under the specication section. Adjust the
machine to the correct GPM.
NOTE:
If possible, always set the machine to the highest
GPM output mode. This will prevent the operator
from over owing the attachments.
3. Once the correct GPM ow is achieved fully open
the restrictor on the ow meter.
4. With the machine in the attachment mode set in
step 2 record the back-pressure. At this point the
pressure reading on the pressure gauge is the backpressure in the circuit. This pressure must not exceed 200 psi/13.5 bar.
Excessive back-pressure will slow the attachments
operation and lead to premature seal failures and
over heating.
Record the back-pressure psi.
5. Close the restrictor valve on the ow meter until the
attachment relief starts to crack or open. The relief
valve opens when the ow rate (GPM), indicated on
the ow meter begins to decline rapidly. Locate the
tools operating system relief pressure in the speci-
cation section in the manual. Adjust attachment re-
lief to specication.
NOTE:
The relief valve pressure must be greater than the
operating pressure of the attachment and three
times the back-pressure. Never use the relief valve
to control the ow rate in the circuit. Cracking pressure means the loss of 4 or more GPM.
Record the relief cracking pressure psi.
Example:
Operation pressure of a breaker is 2700 psi. Back-pressure is 150 psi. A good rule to follow when setting the
relief, multiply the back pressure by 3 then add this number to the operation pressure of the attachment.
Operating Pressure 2700 psi
Back-pressure 450 psi
Operating pressure of the tool 3150 psi
The relief valve setting must be greater than the estimated operating pressure of the tool. If the setting is lower,
damage to the circuit may occur. Excess heat will be
generated in the circuit which will damage the attachment and carrier.
24 ► MB156 User Manual
FLOW TEST PROCEDURES
HEAT LOAD TEST
With the installation kit properly installed and adjusted
per the above procedure, conduct the heat load test as
follows.
1. Connect the ow meter between the tool inlet and
outlet hoses.
2. With the carrier set in the attachment mode, re-
strict the ow meter until a pressure of 1000 psi
is achieved. This pressure must be maintained
throughout the heat test.
NOTE:
Closing of the restrictor may be required as the tem-
perature increases.
Monitor the oil temperature from the ow meter until
no change is noted. Record the time required for oil to
stabilize. Record the surrounding temperature (ambient temperature). Record the time required to stabilize
minutes.
Record the stabilized oil temperature ° F.
Record the ambient temperature °F.
The “heat rise” is calculated as the stabilized temperature minus the ambient temperature.
Example:
Stabilized Temperature 160°
Ambient Temperature -80°
Heat Rise 80°
The normal operating temperature range of this circuit
will be the typical ambient temperature range for the
geographical area plus the heat rise calculated above.
Ensure that the operating temperature range is lower
than 180° for optimum operation of the attachment.
TROUBLESHOOTING
If adequate pump ow is available from the carrier
pump(s) but is not getting to the attachment, consult
your service representative and review the following:
1. Attachment valve(s) are not actuating. Review all
electrical connections that are part of the attachment kit.
2. Ensure proper voltage to the valve(s).
3. Ensure the REG port of the valve is not blocked.
4. Check to make sure the carriers main relief is set
to the manufacturers recommendation and that this
value is equal or greater than the attachment circuit
relief.
5. If the valve will not turn off, check the drain (tank)
line of the valve to ensure that the pressure is 50
psi or less.
MB156 User Manual ◄ 25
DEFINITION OF TERMS
Tool: The hydraulic attachment that the auxiliary circuit is intended to power. These
may include hydraulic breakers, compactors, shears, etc.
Operating Pressure: That pressure at which the tool will naturally operate without inuence of out-
side pressure relief mechanisms. This pressure is an operating characteristic
of the tool and cannot be altered by the end user without changing the tool
design.
Relief Pressure: The relief pressure is that pressure at which the circuit will dump uid in order
to protect itself from damage.
Back Pressure: The pressure at the tool’s connection to the return circuit of the carrier.
Flow Meter: Instrument for testing the operating characteristics of a hydraulic circuit. The
data usually available from this device are pressure (psi/bar), ow (gpm/lpm)
and temperature (°F/°C).
Restrictor Valve: A valve on the ow meter which allows the user to simulate an operating tool
by adding a pressure load (through restriction) to the circuit. This feature is
used to evaluate relief settings and ow ratings at pressure.
V60/V65/V100 Valves: A priority ow control valve manufactured by Stanley Hydraulic Tools. Allows
for optimum operation of any attachment by providing the proper amount of
ow for operation of the tool the “priority” aspect allows the attachment to function properly if another control function is activated.
Inlet Flow: The hydraulic oil supplied to the IN port of the tool or valve.
Regulated Flow: The ow of oil supplied to the tool by the V60/V100 valve.
By-Pass Flow: The oil ow that is supplied by the carriers pump, but not used in the opera-
tion of the attachment. By-pass ow equals inlet ow (to the valve) minus the
regulated ow.
Pressure Line: The hydraulic line(s) that supply pressurized oil from the pump to the valve or
tool.
Return Line: The hydraulic line that connects the OUT port of the tool to the tank circuit of
the carrier.
Cracking Pressure: The pressure at which the relief valve starts to open. Can be seen by a drop in
the ow rate as shown by the ow meter.
Full Open Pressure: The pressure at which the relief valve is completely open dumping all system
ow to the tank.
Ambient Air Temperature: The temperature of the outside air.
Stabilized Temperature: The temperature at which the carrier hydraulic system temperature will stop
rising during testing or operation.
26 ► MB156 User Manual
SPECIFICATIONS
DIMENSIONS AND WEIGHTS
Excavator Weight Class
Skidsteer .....................................................................................................................1500–3000 lbs/681–1362 kg
Mini Excavator .............................................................................................................1900–6000 lbs/855–2700 kg
Weight w/Tool Bit, & Mounting Bracket ...................................................................................................173 lbs/79 kg
Length w/Tool Bit & Mounting Bracket ................................................................................................ 42 in./1069 mm
Tool Working Length ............................................................................................................................. 11 in./279 mm
Tool Diameter ...................................................................................................................................... 1.75 in./44 mm
Hydraulic Pressure (working) ......................................................................................... 1800–2100 psi/124–144 bar
Flow Range
Minimum ............................................................................................................................................. 4 gpm/15 lpm
Maximum .......................................................................................................................................... 10 gpm/38 lpm
System Relief (min. cracking) ........................................................................................................... 2500 psi/172 bar
Return Line Pressure (max.) ............................................................................................................. 200 psi/13.8 bar
Operating Oil Temperature (max.) .......................................................................................................... 200 °F/93 °C
Adapter Fitting Size ........................................................................................................................... -12 SAE O-Ring
Recommended Min. Hose ID ............................................................................................................................ 3/4 in.
Blows Per Minute......................................................................................................................... 600 min./1200 max.
Impact Energy Class ............................................................................................................................ 175 ft lb/250 J
Sound Power Level ........................................................................................................................................116 dBA
A Width Outside of Side Plates ........................ 7 in./177.8 mm
B Width Inside of Side Plates ........................... 5.5 in./139.7 mm
C Depth ............................................................ 8.75 in./222 mm
D Length ........................................................... 30.7 in./782 mm
E Tool Bit Working Length ................................ 11 in./279 mm
Boom Pin Centers ......................................... 6 in./152.4 mm
NOTE: Weights, dimensions and operating specications listed on this sheet are subject to change without
notice. Where specications are critical to your application, please consult the dealer.
MB156 User Manual ◄ 27
ACCESSORIES
Description ................................................................................................................................................... Part No.
Tool Bits
Tool Bit, Asphalt Cutter, Cross-cut .....................................................................................................................26257
Tool Bit, Conical ................................................................................................................................................. 26259
Tool Bit, Chisel, Cross-cut ................................................................................................................................. 26260
Tool Bit, Chisel, Line-cut .................................................................................................................................... 26261
Miscellaneous
Attaching Kits....................................................................................................................................... Consult Dealer
Adapter Assembly..............................................................................................................................................33300
Charge Hose Assembly (Includes Valve and Hose for Nitrogen Tank & Charge Valve Connections) ............. 505232
Charge Kit Assembly (Includes P/N 505232, 28257 and 372047 Charge Kit Box) ...........................................34892
Accumulator Tester ............................................................................................................................................ 28257
Service Kit (For Rebuild MB156, 256, 356) ....................................................................................................... 40372
Conversion Kit to Adapt Breaker to Skidsteer ...................................................................................................56599
TORQUE TABLE
ITEM NO. ILLUSTRATION DESCRIPTION APPLY FT/LB NM
61 POWER CELL TIE ROD KOPR KOTE™ 500 678
58 POWER CELL CHARGE VALVE LOCTITE™ 242 75 101
26 POWER CELL CAPSCREW LOCTITE™ 242 60 81
46 SIDE PLATES SIDE PLATE BOLT KOPR KOTE™ 280 380
66 POWER CELL ACCUMULATOR CAP ANTI-SEIZE 600 813
28 ► MB156 User Manual
MB156 POWER CELL ILLUSTRATION
MB156 User Manual ◄ 29
MB156 PARTS LIST
ITEM
1 350237 1 SAE PLUG, -8
2 01605 4 O-RING
3 23011 4 SPIROL PIN
4 372003 1 GREASE FITTING
5 26068 1 GREASE STICKER
6 26031 1 LOWER BUSHING
7 26029 1 UPPER BUSHING
8 26030 2 DOWEL PIN
9 14051 1 TOOL RETAINER PIN
10 26032 2 TIE ROD NUT
11 505123 4 PIN RETAINER SPRING
12 27244 2 PIN RETAINER
13 00955 7 PIPE PLUG
14 31276 1 LOWER BODY
15 16549 1 DOWEL PIN
16 00354 1 O-RING
17 26039 1 O-RING
18 22398 1 O-RING
19 25902 2 TIE ROD
20 26027 1 PISTON
21 26033 2 TIE ROD WASHER
22 26157 7 O-RING
23 39442 1 PISTON SLEEVE
24 39443 1 SYMMETRICAL SEAL
25 26038 1 ROD WIPER
26 18634 1 O-RING
27 26026 1 MODIFIED QUAD RING
28 23008 1 O-RING
29 26009 1 SEAL CARRIER
30 26036 1 ROD SEAL
31 28787 2 PLASTIC PLUG
32 25930 1 VALVE SLEEVE (SEE ITEM 38)
33 26913 1 VALVE SPOOL
34 26037 1 O-RING
35 25871 1 VALVE CAP
36 26035 6 CAPSCREW
37 32165 1 CHARGE VALVE ASSY
38 25930 1 MAIN BODY ASSY
PART
NO. QTY DESCRIPTION
(INCL ITEM 1, 3-4, 6-8, 11-13)
(INCL ITEM 2)
(INCL ITEM 13, 32, 37)
39704 1 PRESSURE SPEC DECAL
(250 PSI–MB15614 ONLY)
29605 SEAL KIT
30 ► MB156 User Manual
MB156 SIDE PLATES ILLUSTRATION
13
17
10
16
17
15
14
3
18
16
6
1
8
4
7
5
11
ITEM P/N OTY DESCRIPTION
1 23573 4 LOCKPLATE
3 27711 1 PRESSURE SPEC STICKER -
350 PSI
4 27964 1 SIDE PLATE WELDMENT LH
5 27965 1 SIDE PLATE WELDMENT RH
6 27994 4 SIDE PLATE BOLT
7 27995 4 RETAINING RING EXTERNAL
8 28109 1 MB156 POWERCELL ASSY
10 29175 1 "CE" PLATE MB15600
ITEM P/N OTY DESCRIPTION
11 35415 4 SIDE PLATE NUT
12 47351 1 DECAL, COMPOSITE WARNING
13 47352 2 DECAL, LIFT POINT
14 66764 1 DECAL, USA ORIGIN 3"
15 68594 1 SOUND POWER LEVEL 116 dBA
16 73003 2 DECAL, MB156
17 73008 2 STANLEY LOGO
18 73015 1 DECAL, GREASE
MB156 User Manual ◄ 31
Stanley Hydraulic Tools
3810 SE Naef Road
Milwaukie, Oregon 97267
503-659-5660 / Fax 503-652-1780
www.stanleyhydraulics.com
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