Stanley Black Decker Automobile Parts MB156 User Manual

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  
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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 fill 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 certified dealer. Please read the following warning.  
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 certified dealer, call Stanley Hydraulic Tools at the number listed on the back of this  
manual and ask for a Customer Service Representative.  
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SAFETY SYMBOLS  
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair ac-  
tions 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.  
DANGER  
WARNING  
CAUTION  
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 avoid-  
ed, may result in property damage.  
CAUTION  
NOTICE  
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 dam-  
age to the equipment.  
IMPORTANT  
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 mainte-  
nance personnel.  
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SAFETY PRECAUTIONS  
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 compartment 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  
shields are used when operating the  
breaker with this type of equipment.  
• 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  
illegible. Replacement decals can be  
obtained from your authorized Stanley  
Distributor.  
• When operating the breaker you must use  
ear protection, eye protection, and  
breathing protection.  
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SAFETY PRECAUTIONS  
Tool operators and maintenance personnel must always  
OBEY SAFETY RULES  
comply with the safety precautions given in this manual  
and on the stickers and tags attached to the tool and  
hose.  
Operate the breaker in accordance with all laws and  
regulations which affect you, your equipment, and  
the work site.  
These safety precautions are given for your safety. Re-  
view them carefully before operating the tool and before  
performing general maintenance or repairs.  
Do not operate the breaker until you have read this  
manual and thoroughly understand all safety, opera-  
tion and maintenance instructions.  
Supervising personnel should develop additional pre-  
cautions relating to the specific work area and local  
safety regulations. If so, place the added precautions in  
the space provided in this manual.  
The operator must be familiar with all prohibited  
work areas such as excessive slopes and danger-  
ous terrain conditions.  
Do not operate the breaker until you have read the  
carrier equipment manual and thoroughly under-  
stand all safety, operation and maintenance instruc-  
tions. The word “carrier”, as used in this manual,  
means a backhoe or excavator or similar equipment  
used to operate the breaker.  
The MB156 Mounted Hy-  
draulic Breaker will provide  
safe and dependable ser-  
vice if operated in accor-  
dance with the instructions  
given in this manual. Read  
and understand this man-  
ual and any stickers and  
tags attached to the tool  
and hoses before opera-  
tion. Failure to do so could  
result in personal injury or  
equipment damage.  
Ensure that all maintenance procedures recom-  
mended 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 flying debris or movement of the equip-  
ment.  
Know the limits of your equipment.  
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.  
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 contain-  
ing a variety of hazardous substances such as as-  
bestos, 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 qualified  
person.  
BE THOROUGHLY TRAINED BEFORE  
OPERATING THE UNIT ALONE  
Operator training must start in an area without by-  
standers 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, exces-  
sive slopes and poor or dangerous terrain condi-  
tions must be avoided.  
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SAFETY PRECAUTIONS  
Do not operate the tool unless thoroughly trained or  
under the supervision of an instructor.  
Do not operate a damaged, leaking, improperly ad-  
justed, or incompletely assembled breaker.  
Become familiar with the carrier controls before op-  
erating the carrier and the 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 manu-  
facturer may damage the breaker and will void the  
warranty.  
When operating the breaker you must use ear pro-  
tection, 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.  
To avoid personal injury or equipment damage, all  
breaker repair, maintenance and service must only  
be performed by authorized and properly trained  
personnel.  
Make sure all controls (levers and pedals) are in the  
NEUTRAL position before starting the carrier.  
If you do not understand how to safely operate your  
breaker, contact an authorized Stanley Dealer for  
assistance.  
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 ma-  
chine with the engine running. ALWAYS ENGAGE  
THE PARKING BRAKE.  
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.  
Stop the engine before attempting to make any re-  
pairs, adjustments or servicing to either the carrier  
or the breaker.  
Do not operate this equipment if you are under the  
influence of drugs or alcohol.  
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 per-  
formance.  
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TOOL STICKERS & TAGS  
Lwa  
Stanley Hydraulic Tools  
Division of The Stanley Works  
3810 SE Naef Road  
Milwaukie, OR 97267 USA  
116  
MODEL NO:  
SERIAL NO:  
OPERATING WEIGHT:  
INPUT FLOW:  
68594  
Sound Power Level—116 dBA  
CIRCUIT RELIEF PRESSURE:  
NITROGEN ONLY  
29175  
CE Specification Plate  
350 PSI  
68593—MB15641 only  
CE Specification Plate  
27711  
Accumulator Pressure Sticker—350 PSI  
29704—MB15614 only (Not Shown)  
Accumulator Pressure Sticker—250 PSI  
47352  
Lifting Point Decal  
66764  
Made in USA Decal  
47351  
Composite Warning Sticker  
P/N 73003  
GREASE  
TOOL  
BIT  
WHEN  
DRY  
2
P/N 73008  
P/N 73015  
P/N 72074 MB1561SBN Only  
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OPERATION  
PRE-INSTALLATION INSTRUCTIONS PRE-OPERATION PROCEDURES  
BACKHOE OR EXCAVATOR SIZE  
NITROGEN CHARGE  
Check the Specifications section of this manual to de- The breaker has been properly charged with nitrogen at  
termine correct carrier size, hydraulic flow and pressure the factory and is ready to use.  
requirements.  
TOOL BIT LUBRICATION  
Grease the top 6 in. / 150 mm of the breaker tool bit be-  
fore installing. During operation, the tool can be greased  
through the grease fitting. Grease is required.  
WARNING  
If hydraulic pressure, hydraulic back-pressure,  
hydraulic flow or carrier weight class are exceeded,  
Make sure the tool bit is against the piston by placing the  
tool bit against the ground and then putting down pres-  
sure on the breaker. See the illustrations below.  
the tool warranty is void.  
EXISTING EQUIPMENT HYDRAULICS VS.  
APPLICATION ATTACHING KITS  
Grease  
This Area  
of Bit  
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 confirming pressure and flow to the hydraulic tool is  
not a good practice. Spare spool valves, dipper circuits,  
etc., are just a few examples of easily accessible hy-  
draulic circuits which could prove to cause problems for  
hydraulic tool usage.  
6 inches/150 mm  
To o l Bi t  
Stanley Hydraulic Tools has for many years developed  
ATTACHING KITS for adapting to existing hydraulic sys-  
tems 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.  
Figure 1. Greasing the Top of the Tool Bit  
TEST THE HYDRAULIC SYSTEM  
WARNING  
1. Have your Stanley dealer test the carrier hydraulic  
system to make sure the system is operating at the  
manufacturers specified capacity and pressure rat-  
ings.  
Greasing the tool bit without down pressure on the  
breaker results in grease filling 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.  
2. Be sure the fluid in the hydraulic system is filtered  
to at least 10 micro-meters. (Particles found in fluid  
should not exceed 10 micro-meters in size.)  
3. Check the hydraulic filter. Replace the filter 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 specified flow and pressure  
rating for the breaker. See the Specifications section  
of this manual.  
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OPERATION  
2. With the carrier at idle and the breaker suspended  
Piston in Down Position  
Against Tool Bit  
in the air or with minimal down pressure, turn on the  
breaker to gradually warm up its internal compo-  
nents.  
Tool Stop  
3. When the hydraulic system and breaker are warm,  
proceed with operation.  
Lower Bushing  
Tool Bit  
LONG TERM STORAGE  
1. Remove the tool bit, clean the tool stop and the low-  
er 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.  
Piston Not Against  
Tool Bit Leaving Space  
Between the Piston and  
Bit  
Grease Will Fill  
This Space  
3. Store the breaker in a vertical position. Do not store  
the breaker horizontally for extended periods.  
Tool Stop  
Lower Bushing  
OPERATING A BREAKER  
PREPARATION FOR USE  
Read the section in this manual titled Pre-Operation Pro-  
cedures 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.  
Tool Bit  
Figure 2. Positioning the Tool Bit with Lubrication  
POSITIONING THE CARRIER  
SKIDSTEER LOADERS  
SECURING THE TOOL BIT  
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.  
1. The tool retainer (9) is shipped installed in the  
breaker (see parts illustration).  
2. Drive out the tool retainer using a punch and ham-  
mer.  
Keep lowering the loader arms as the tool penetrates  
the work material so the skidsteer weight stays on the  
tool. The breaker is more efficient when adequate down  
force is applied.  
3. Grease the top area of the tool bit as shown in Fig-  
ure 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 sys-  
tem at engine idle until hydraulic lines are warm to  
the touch.  
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OPERATION  
Apply down force.  
Figure 5. Excavator  
POSITIONING THE BREAKER TOOL ON  
THE WORK MATERIAL  
Figure 3. Skidsteer Loader  
BACKHOES  
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.  
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.  
Apply down pressure.  
Figure 4. Backhoe  
Break near the edge.  
Figure 6. Position the Tool Bit  
Apply down force to the boom/dipper until the rear of the  
backhoe is raised off the ground. Rear tires and stabiliz-  
ers should be off the ground so the total rear weight of  
the backhoe is on the breaker tool. The breaker is more  
efficient when adequate down force is applied.  
On flat material or rock, the breaker should be vertical  
or “curled” back slightly to direct the impact force down-  
ward 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.  
EXCAVATORS  
With the breaker tool in place on the material to be  
worked, position the excavator so the dipper is at ap-  
proximately 45° and the breaker is almost vertical. The  
tracks of the excavator should be in line with the boom  
and the breaker.  
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OPERATION  
On flat 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.  
Do not break continuously  
in one place  
Figure 7. Breaking  
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 equip-  
ment. Too much down pressure may cause the breaker  
housing to violently crash into the broken material when  
“break-through” occurs.  
CAUTION  
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.  
In any breaking job, the operator should make every ef-  
fort 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.  
Use a “scoring” method of breaking when cracking the  
material becomes difficult. This technique involves strik-  
ing 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.  
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 re-  
positioned.  
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 penetra-  
tion. The time used for additional penetration could be  
better used to strike blows in another place.  
Many materials do not respond well to continued ham-  
mering in one place. The breaker tool should be repo-  
sitioned on the work each time the tool penetrates but  
does not crack the material.  
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OPERATION  
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 bind-  
ing 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 cut-  
ting the rebar with the breaker. Another method is to pe-  
riodically cut the rebar with an oxy-acetylene torch  
Sorinwihe ake  
BLANK FIRING  
Figure 8. Scoring with the Breaker  
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. Exces-  
sive “Blank Firing” may be considered equipment abuse  
and may result in voiding warranties.  
Breaker tool binding can cause erratic breaker opera-  
tion 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.  
Break-through or difficult 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 sufficient  
contact with the material to be broken. The energy is ab-  
sorbed 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 difficult or  
the wrong tool bit is used, or in flat rock work where the  
operator fails to stop operation of the breaker when slip-  
page, fracturing or material break-through occurs.  
Figure 9. Breaker Tool Bit Binding  
CAUTION  
“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 ab-  
sorbed by breaker components and excavator boom  
components. “Blank Firing” of this type can be experi-  
enced when the operator fails to stop operation of the  
breaker when the material fractures or material break-  
through occurs, or during re-positioning of the breaker.  
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.  
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OPERATION  
While “Blank Firing” cannot always be avoided, it can be  
kept to a minimum by avoiding the above conditions as  
much as possible.  
CAUTION  
UNDERWATER USAGE  
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  
modifications and specific warranty coverage if you  
have an underwater requirement.  
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 compo-  
nents.  
GREASE THE BIT  
Grease should be applied to the upper end of the break-  
er tool bit each time it is installed. Thereafter, the tool  
should be greased at the fitting to reduce wear in the  
lower body and bushings of the tool. See Greasing The  
Tool Bit in the sections titled Pre-Operation Procedures.  
IMPORTANT  
UNDERWATER USE  
No part of the Stanley MB156 Breaker may be  
submerged in water without first 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.  
Do not use underwater without supplying air to breaker  
Figure 10. Underwater Restrictions  
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TROUBLESHOOTING  
This section describes how to find and resolve problems If symptoms of poor performance develop, the following  
users may experience. If a situation occurs that is not chart can be used as a guide to correct the problem.  
covered, call your Stanley Customer Service represen-  
tative for assistance.  
When diagnosing faults in operation of the tool, always  
check that the hydraulic power source is supplying the  
correct hydraulic flow and pressure to the tool as listed  
in the table below. Use a flowmeter known to be accu-  
rate. Check the flow with the hydraulic oil temperature at  
WARNING  
least 80 °F/27 °C.  
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 fire.  
Low hydraulic oil level.  
No flow to breaker.  
Main relief set low.  
Fill reservoir.  
Have hydraulic circuit tested by  
authorized dealer/distributor per  
approved procedure.  
Internal damage.  
Have unit serviced by an authorized  
dealer/distributor.  
Damaged quick couplers.  
Low hydraulic flow  
Replace.  
Breaker runs slowly.  
Have hydraulic circuit tested by an  
authorized dealer/distributor per  
approved procedure.  
Excessive heat build up.  
Excessive nitrogen pressure.  
Internal leakage.  
Have unit serviced by an authorized  
dealer/distributor.  
Breaker runs erratically.  
Low or excessive back-pressure.  
Damaged switch or connection.  
Relief set too low.  
Have carrier serviced by an authorized  
dealer/distributor.  
Internal damage.  
Tool binding.  
Add grease to tool shank. Do not pry  
while operating.  
Breaker runs but at reduced  
power.  
Low accumulator charge.  
Excessive back-pressure.  
Relief set too low.  
Have unit serviced by an authorized  
dealer/distributor.  
Breaker leaks oil around tool bit  
and tool bushing.  
Lower seals failed.  
Have unit serviced by an authorized  
dealer/distributor.  
Hydraulic system overheats.  
Main relief set low.  
Have unit serviced by an authorized  
dealer/distributor.  
Insufficient cooling capability in  
hydraulic circuit.  
Line/hose size too small.  
Excessive back-pressure.  
MB156 User Manual ◄ 15  
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MAINTENANCE  
DAILY MAINTENANCE CHECKS  
Check for loose or missing fasteners. Tighten or re-  
place as needed.  
Inspect tool retaining pins and pockets for wear.  
Check for hydraulic leaks at all fittings and hoses.  
Replace any defective hoses.  
Apply grease to the grease fitting in the lower body  
each morning. Grease as needed throughout the  
work day.  
11 inches  
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.  
Figure 11. Measuring Tool Bit Gap  
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CHARGING THE ACCUMULATOR  
The tools required to charge the breaker are shown be- 5. If the pressure is correct, unscrew the gauge to re-  
low. 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.  
tract the plunger. Then, loosen and remove the tes-  
ter from the charge valve. If the pressure is not cor-  
rect, proceed to Step 6.  
CHARGING THE BREAKER WITH  
NITROGEN  
CHECKING THE NITROGEN CHARGE IN  
THE BREAKER  
6. Connect the charge hose assembly to the charg-  
ing valve on the tester. Make sure the valve on the  
charge hose assembly is closed. Open the valve on  
the nitrogen bottle.  
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 7. Very slowly open the valve on the charge hose  
the chuck is completely retracted.  
assembly and slowly meter the nitrogen into the  
breaker charge valve until the tester reads the cor-  
rect charge pressure. SEE CHARGE PRESSURE  
SPECIFICATION BELOW.  
3. Screw the tester into the breaker charge valve us-  
ing 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 8. When the correct pressure is obtained, close the  
valve.  
valve on the nitrogen bottle. Unscrew the gauge to  
retract the plunger. Loosen and remove the tester  
from the charge valve. Before, replacing the protec-  
tive plug, inspect the plug O-ring. If damaged or de-  
formed, replace the plug.  
4. Turn the gauge clockwise to advance the plunger  
until a pressure is indicated on the gauge. Do not  
overtighten.  
350 psi/24 bar (250 psi/17 bar if  
less than 6 gpm/23 lpm or less  
than 2000 psi) at 70 ºF/21 ºC with  
NO FORCE ON THE TOOL BIT.  
Nitrogen Bottle (locally obtained)  
505232 Charge Hose  
Assy (includes gauge,  
valve, hose and charge  
valve adapter)  
ter  
28257 Tester  
Gauge  
Chuck  
ChargingValve  
Plunger  
28257 TESTER  
Nitrogen Charging Equipment  
Figure 12. Charge Pressure Specification For the MB156  
MB156 User Manual ◄ 17  
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FLOW CONTROL KIT INSTRUCTIONS  
The Flow Control Kit is an option for Skid Steer Models.  
HOSE ROUTINGS  
The Flow Control Kit regulates the flow from the skid  
steer hydraulics to the breaker to prevent over-speeding  
of the breaker. Follow the instructions below to install  
the kit.  
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.  
Install the flow 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.  
S
5
4
3
R
2
P
T
1
6
8
7
Figure 13. Flow Control Kit  
ITEM  
NO.  
PART  
NO.  
QTY DESCRIPTION  
1
2
3
4
5
34621  
34839  
371516  
02773  
58653  
1
6
3
4
1
FLOW CONTROL BLOCK  
WASHER  
NYLOCK NUT  
ADAPTER  
ORIFICE LOCATED UNDER  
FITTING DESIGNATED AS "S"  
6
7
8
58652  
58654  
58655  
3
2
2
CAPSCREW  
HOSE  
HOSE  
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WEAR TOLERANCES  
NEW  
REJECT LIMIT  
LOWER BUSHING (ITEM 6)  
1.770 in./45 mm  
1.645 in./42 mm  
FIGURE 14. LOWER BUSHING  
B
Wear Areas  
TOOL STOP (ITEM 7)  
A
A) 1.770 in./45 mm Inside A) 1.645 in./42 mm Inside  
C
C=Measure at 1.2 in./30 mm  
Diameter  
Diameter  
FIGURE 15. TOOL STOP  
B) .47 in./12 mm Depth  
B) .35 in./9 mm Depth  
RETAINER PIN (ITEM 9)  
.995 in./25 mm Outside  
Diameter  
.91 in./23 mm Outside  
Diameter  
FIGURE 16. RETAINER PIN  
RETAINER PIN (ITEM 12)  
.312 in./8 mm Outside  
Diameter  
.242 in./6 mm  
Outside Diameter  
PISTON (ITEM 20)  
Wear Limit  
New Part  
1.525 in./39 mm Depth  
1.485 in./38 mm  
FIGURE 17. PISTON  
MB156 User Manual ◄ 19  
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PROPER USE & CARE OF TOOL BITS  
Tool bits are made and heat treated to specification.  
Worn-out retainer pin(s) will cause uneven loading on  
the pin(s) themselves, causing failure of the tool or re-  
tainer pin(s). This will also cause excessive wear to the  
front bushing(s).  
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 de-  
termine the cause immediately in order to prevent the  
damage from occurring again.  
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.  
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.  
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.  
Listed below are several methods to determine tool fail-  
ure and will quickly aid in warranty determination.  
TOOL FAILURE NOT COVERED  
UNDER WARRANTY  
BLANK FIRING OR FREE RUNNING  
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.  
This occurs when the tool is not in proper contact with  
the work, thus causing the energy produced by the ham-  
mer 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 firing.  
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 allow-  
ances.  
Figure 19. Metal-to-Metal Contact Examples  
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PROPER USE & CARE OF TOOL BITS  
In its most extreme forms, the combination of surface As the next illustration shows, fatigue failures take many  
damage and severe bending can quickly break even the forms, but they all exhibit similar features. Generally, the  
best working steels.  
broken surface is brittle and has a “lip” like that in the  
bending failure, even though, in some cases, the lip has  
been broken.  
The illustrations below show examples of severe stress  
breaks.  
Figure 23. Fatigue Failures  
Figure 20. Severe Stress Breaks  
CORROSION  
PRYING  
Tools should be greased and stored out of the weather.  
Corrosion tends to accelerate the fatigue fractures of the  
tool.  
This is the most common cause of tool failure. Even  
when there is no surface damage, the stress from pry-  
ing 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 re-  
position material. The tool should not be used as a pivot  
point when repositioning the carrier. The power gener-  
ated by the carrier will far exceed the strength 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 repeated-  
ly slips off the work at an angle, or the material, itself  
moves from under the working steel.  
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.  
Figure 22. Extreme Down Pressure Breakage  
MB156 User Manual ◄ 21  
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PROPER USE & CARE OF TOOL BITS  
Look for surface cracks, galling, or gouge marks. Breaks  
TOOL FAILURE COVERED UNDER  
WARRANTY  
INTERNAL MATERIAL FLAW  
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.  
This failure occurs when a foreign material is rolled into  
the steel during the manufacturing process, causing an  
imperfection in the internal material flaw grain. The re-  
sult is an inherent weakness in the tool shank and even-  
tual breakage.  
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.  
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.  
Failures in this area are usually the result  
of blank firing, worn bushing(s), worn re-  
tainer pin(s) or the lack of lubrication.  
This is the only kind of tool bit failure that is always  
covered under warranty.  
Failures in this area are usually the result  
of worn retainer pin(s) or blank firing.  
Failures in this area are usually the result  
of prying, metal-to-metal contact or corro-  
sion. Prying failures often exhibit a shell-  
like 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  
Failures in this area are usually the result  
of heat build-up, mushrooming, or improp-  
er contact with the work.  
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.  
Figure 26. Diagram of Tool Bit Failures  
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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 penetra-  
tion speed is important.  
CHISEL  
This style of point is used gen-  
erally used for trench work,  
where a controlled break is re-  
quired, and for rock breaking  
on materials with a definite line  
of cleavage. A chisel bit also  
works well in softer concretes  
where a moil might penetrate  
quickly, but not cause a frac-  
ture line.  
BLUNT  
This flat 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 flat  
blunt will shatter the material.  
It is also useful when break-  
ing irregularly shaped material  
where its broad tip makes it  
easier to position.  
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FLOW TEST PROCEDURES  
The correct performance of this procedure will verify if 5. Close the restrictor valve on the flow meter until the  
the auxiliary circuit of the carrier is adequate to properly  
operate a Stanley attachment.  
attachment relief starts to crack or open. The relief  
valve opens when the flow rate (GPM), indicated on  
the flow meter begins to decline rapidly. Locate the  
tools operating system relief pressure in the specifi-  
cation section in the manual. Adjust attachment re-  
lief to specification.  
This procedure is generic in form. It is the end users  
responsibility to ensure that this procedure will work with  
his specific type of equipment.  
If an adequate flow meter is not available contact your  
Stanley Hydraulic Distributor for assistance.  
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 flow rate in the circuit. Cracking pres-  
sure means the loss of 4 or more GPM.  
TEST PROCEDURE  
1. With the auxiliary circuit (or kit) completely installed  
connect the flow meter between the tool inlet and  
outlet hoses.  
Record the relief cracking pressure  
Example:  
psi.  
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.  
Operation pressure of a breaker is 2700 psi. Back-pres-  
sure is 150 psi. A good rule to follow when setting the  
relief, multiply the back pressure by 3 then add this num-  
ber to the operation pressure of the attachment.  
2. With the machine setting at the mode that’s going to  
be used to operate the attachment record the GPM  
_____.  
Operating Pressure  
Back-pressure  
2700 psi  
450 psi  
Locate the correct flow for the attachment in the  
manual under the specification section. Adjust the  
machine to the correct GPM.  
Operating pressure of the tool  
3150 psi  
The relief valve setting must be greater than the estimat-  
ed 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 attach-  
ment and carrier.  
NOTE:  
If possible, always set the machine to the highest  
GPM output mode. This will prevent the operator  
from over flowing the attachments.  
3. Once the correct GPM flow is achieved fully open  
the restrictor on the flow 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 back-  
pressure in the circuit. This pressure must not ex-  
ceed 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.  
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FLOW TEST PROCEDURES  
TROUBLESHOOTING  
HEAT LOAD TEST  
If adequate pump flow is available from the carrier  
pump(s) but is not getting to the attachment, consult  
your service representative and review the following:  
With the installation kit properly installed and adjusted  
per the above procedure, conduct the heat load test as  
follows.  
1. Attachment valve(s) are not actuating. Review all  
electrical connections that are part of the attach-  
ment kit.  
1. Connect the flow meter between the tool inlet and  
outlet hoses.  
2. With the carrier set in the attachment mode, re-  
strict the flow meter until a pressure of 1000 psi  
is achieved. This pressure must be maintained  
throughout the heat test.  
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.  
NOTE:  
Closing of the restrictor may be required as the tem-  
perature increases.  
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.  
Monitor the oil temperature from the flow meter until  
no change is noted. Record the time required for oil to  
stabilize. Record the surrounding temperature (ambi-  
ent temperature). Record the time required to stabilize  
minutes.  
Record the stabilized oil temperature  
Record the ambient temperature  
°F.  
°F.  
The “heat rise” is calculated as the stabilized tempera-  
ture minus the ambient temperature.  
Example:  
Stabilized Temperature  
Ambient Temperature  
Heat Rise  
160°  
-80°  
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.  
MB156 User Manual ◄ 25  
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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 influence 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 fluid in order  
to protect itself from damage.  
Back Pressure:  
Flow Meter:  
The pressure at the tool’s connection to the return circuit of the carrier.  
Instrument for testing the operating characteristics of a hydraulic circuit. The  
data usually available from this device are pressure (psi/bar), flow (gpm/lpm)  
and temperature (°F/°C).  
Restrictor Valve:  
A valve on the flow 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 flow ratings at pressure.  
V60/V65/V100 Valves:  
A priority flow control valve manufactured by Stanley Hydraulic Tools. Allows  
for optimum operation of any attachment by providing the proper amount of  
flow for operation of the tool the “priority” aspect allows the attachment to func-  
tion properly if another control function is activated.  
Inlet Flow:  
The hydraulic oil supplied to the IN port of the tool or valve.  
Regulated Flow:  
By-Pass Flow:  
The flow of oil supplied to the tool by the V60/V100 valve.  
The oil flow that is supplied by the carriers pump, but not used in the opera-  
tion of the attachment. By-pass flow equals inlet flow (to the valve) minus the  
regulated flow.  
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:  
Full Open Pressure:  
The pressure at which the relief valve starts to open. Can be seen by a drop in  
the flow rate as shown by the flow meter.  
The pressure at which the relief valve is completely open dumping all system  
flow to the tank.  
Ambient Air Temperature:  
Stabilized Temperature:  
The temperature of the outside air.  
The temperature at which the carrier hydraulic system temperature will stop  
rising during testing or operation.  
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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
B
C
D
E
Width Outside of Side Plates ........................ 7 in./177.8 mm  
Width Inside of Side Plates........................... 5.5 in./139.7 mm  
Depth ............................................................ 8.75 in./222 mm  
Length........................................................... 30.7 in./782 mm  
Tool Bit Working Length................................ 11 in./279 mm  
Boom Pin Centers......................................... 6 in./152.4 mm  
NOTE: Weights, dimensions and operating specifications listed on this sheet are subject to change without  
notice. Where specifications are critical to your application, please consult the dealer.  
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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  
POWER CELL  
POWER CELL  
POWER CELL  
SIDE PLATES  
POWER CELL  
DESCRIPTION  
TIE ROD  
APPLY  
FT/LB  
500  
75  
NM  
678  
101  
81  
61  
58  
26  
46  
66  
KOPR KOTE™  
LOCTITE™ 242  
LOCTITE™ 242  
KOPR KOTE™  
ANTI-SEIZE  
CHARGE VALVE  
CAPSCREW  
60  
SIDE PLATE BOLT  
ACCUMULATOR CAP  
280  
600  
380  
813  
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MB156 POWER CELL ILLUSTRATION  
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MB156 PARTS LIST  
PART  
NO.  
ITEM  
1
QTY  
1
DESCRIPTION  
SAE PLUG, -8  
O-RING  
350237  
01605  
23011  
372003  
26068  
26031  
26029  
26030  
14051  
26032  
505123  
27244  
00955  
31276  
2
4
3
4
SPIROL PIN  
4
1
GREASE FITTING  
GREASE STICKER  
LOWER BUSHING  
UPPER BUSHING  
DOWEL PIN  
5
1
6
1
7
1
8
2
9
1
TOOL RETAINER PIN  
TIE ROD NUT  
10  
11  
12  
13  
14  
2
4
PIN RETAINER SPRING  
PIN RETAINER  
2
7
PIPE PLUG  
1
LOWER BODY  
(INCL ITEM 1, 3-4, 6-8, 11-13)  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
16549  
00354  
26039  
22398  
25902  
26027  
26033  
26157  
39442  
39443  
26038  
18634  
26026  
23008  
26009  
26036  
28787  
25930  
26913  
26037  
25871  
26035  
32165  
1
1
1
1
2
1
2
7
1
1
1
1
1
1
1
1
2
1
1
1
1
6
1
DOWEL PIN  
O-RING  
O-RING  
O-RING  
TIE ROD  
PISTON  
TIE ROD WASHER  
O-RING  
PISTON SLEEVE  
SYMMETRICAL SEAL  
ROD WIPER  
O-RING  
MODIFIED QUAD RING  
O-RING  
SEAL CARRIER  
ROD SEAL  
PLASTIC PLUG  
VALVE SLEEVE (SEE ITEM 38)  
VALVE SPOOL  
O-RING  
VALVE CAP  
CAPSCREW  
CHARGE VALVE ASSY  
(INCL ITEM 2)  
38  
25930  
39704  
29605  
1
1
MAIN BODY ASSY  
(INCL ITEM 13, 32, 37)  
PRESSURE SPEC DECAL  
(250 PSI–MB15614 ONLY)  
SEAL KIT  
30 ► MB156 User Manual  
Download from Www.Somanuals.com. All Manuals Search And Download.  
MB156 SIDE PLATES ILLUSTRATION  
17  
13  
10  
16  
5
3
11  
18  
17  
15  
14  
16  
6
1
8
4
7
ITEM  
P/N  
23573  
27711  
OTY DESCRIPTION  
ITEM  
11  
P/N  
35415  
47351  
47352  
66764  
68594  
73003  
73008  
73015  
OTY DESCRIPTION  
1
4
1
LOCKPLATE  
4
1
2
1
1
2
2
1
SIDE PLATE NUT  
3
PRESSURE SPEC STICKER -  
350 PSI  
12  
DECAL, COMPOSITE WARNING  
DECAL, LIFT POINT  
13  
4
27964  
27965  
27994  
27995  
28109  
29175  
1
1
4
4
1
1
SIDE PLATE WELDMENT LH  
SIDE PLATE WELDMENT RH  
SIDE PLATE BOLT  
14  
DECAL, USA ORIGIN 3"  
SOUND POWER LEVEL 116 dBA  
DECAL, MB156  
5
15  
6
16  
7
RETAINING RING EXTERNAL  
MB156 POWERCELL ASSY  
"CE" PLATE MB15600  
17  
STANLEY LOGO  
8
18  
DECAL, GREASE  
10  
MB156 User Manual ◄ 31  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Stanley Hydraulic Tools  
3810 SE Naef Road  
Milwaukie, Oregon 97267  
503-659-5660 / Fax 503-652-1780  
Download from Www.Somanuals.com. All Manuals Search And Download.  

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