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6 ► MB156 

User Manual

Tool operators and maintenance personnel must comply 

with the safety precautions given in this manual and on 

the stickers and tags attached to the tool and hose.
These  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 

precautions relating to the specific work area and local 

safety regulations. Place the added precautions in the 

space provided.

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 they 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  flying  debris  or  movement  of  the 

equipment.

• 

Know the limits of your equipment.

•  Establish a training program for all operators to 

ensure safe operation.

• 

Warning:

 Use of this tool on certain materials 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 qualified person.

• 

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.

SAFETY PRECAUTIONS

Summary of Contents for MB156

Page 1: ...2015 STANLEY Black Decker Inc New Britain CT 06053 U S A 30892 3 2020 Ver 22 USER MANUAL Safety Operation and Maintenance MB156 MOUNTED HYDRAULIC BREAKER...

Page 2: ......

Page 3: ...the warranty 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 n...

Page 4: ...messages that follow this symbol to avoid possible injury or death This safety alert and signal word indicates an imminently hazardous situation which if not avoided will result in death or serious in...

Page 5: ...r 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 shiel...

Page 6: ...ion 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 t...

Page 7: ...reaker 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 Use of tool bit...

Page 8: ...ITROGEN ONLY 350 PSI 27711 Accumulator Pressure Sticker 350 PSI 29704 MB15614 only Not Shown Accumulator Pressure Sticker 250 PSI 47351 Composite Warning Sticker 2 GREASE TOOL BIT WHEN DRY PN 73015 P...

Page 9: ...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 t...

Page 10: ...ydraulic 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 lowe...

Page 11: ...ING 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 t...

Page 12: ...e 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 If the material does not break with 3 6 inches of tool...

Page 13: ...rranties 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...

Page 14: ...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...

Page 15: ...shank Do not pry while operating Breaker runs but at reduced power Low accumulator charge Have unit serviced by an authorized dealer distributor Excessive back pressure Relief set too low Breaker leak...

Page 16: ...l 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 for...

Page 17: ...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 assem...

Page 18: ...que 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...

Page 19: ...B 35 in 9 mm Depth RETAINER PIN ITEM 9 995 in 25 mm Outside Diameter 91 in 23 mm Outside Diameter RETAINER PIN ITEM 12 312 in 8 mm Outside Diameter 242 in 6 mm Outside Diameter PISTON ITEM 20 1 525 i...

Page 20: ...n 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 Worn...

Page 21: ...atigue 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...

Page 22: ...eat 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 s...

Page 23: ...o 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 contr...

Page 24: ...m relief pressure in the specification section in the manual Adjust attachment relief to specification Note The relief valve pressure must be greater than the operating pressure of the attachment and...

Page 25: ...and review the following 1 Attachment valves are not actuating Review all electrical connections that are part of the attachment kit 2 Ensure proper voltage to the valves 3 Ensure the REG port of the...

Page 26: ...ves A priority flow control valve manufactured by STANLEY Allows for optimum operation of any attachment by providing the proper amount of flow for operation of the tool the priority aspect allows the...

Page 27: ...turn 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...

Page 28: ...ve 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...

Page 29: ...MB156 User Manual 29 MB156 POWER CELL ILLUSTRATION...

Page 30: ...39 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 ROD SEAL 25 26038 1 ROD WIPER 26 18634 1 O RING 27 26...

Page 31: ...MENT RH 6 27994 4 SIDE PLATE BOLT 7 27995 4 RETAINING RING EXTERNAL 8 28109 1 MB156 POWERCELL ASSY 10 35415 4 SIDE PLATE NUT ITEM P N QTY DESCRIPTION 12 47352 2 DECAL LIFT POINT 13 66764 1 DECAL USA O...

Page 32: ...CAL POINT 5 27995 4 RETAINING RING EXTERNAL 6 28109 1 MB156 POWERCELL ASSY 8 37916 4 SIDEPLATE NUT 9 39480 4 SIDEPLATE BOLT 10 39704 1 PRESSURE SPEC STICKER 11 47351 1 DECAL COMPOSITE WARN ING 12 4735...

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Page 36: ...STANLEY Infrastructure 6430 SE Lake Road Portland Oregon 97222 USA 503 659 5660 Fax 503 652 1780 www stanleyinfrastructure com...

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