Stanley Black & Decker MBX138 thru MBX608 user manual Blank Firing

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OPERATION

Excessive side force cocks the tool in its bore, pre-vents 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 com- ponents. Always direct the down pressure force in a line toward the point of tool contact with the work.

NOTICE

DO NOT pry with the tool bit and breaker.

Prying will damage the tool bit and associated

breaker components.

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 oxyacetylene torch.

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.

Blank firing as a result of operator error occurs when the tool bit is not in contact with the work surface to be bro- ken and is allowed to drop down in the lower body cav- ity 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 break-through occurs, or during re-positioning of the breaker.

While blank firing cannot always be avoided, it can be kept to a minimum by avoiding the above conditions as much as possible.

BLANK FIRING

To understand “Blank Firing”, the operator needs to be aware that if the tool bit is not pressed against the work surface the tool bit will drop down in the lower body cavity far enough so that the piston cannot strike it. 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 excavator components and may result in failure of one or more components. Excessive blank fir- ing may be considered equipment abuse and may result in voiding warranties.

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 condition, the pis- ton 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 excavator boom components. Blank firing of this

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Contents MBX138 Read Wear Eye Manual Protection Hearing Breathing Table of Contents General Safety Precautions Safety PrecautionsSafety Precautions Local Safety Regulations Safety SymbolsBack Head = 17 ± 0.5 bar Tool Stickers & TagsMbxxxx MaxforcePRE-OPERATION PRE-INSTALLATION InstructionsPreparation for Operation Securing the Tool LOW-TEMPERATURE WARM-UP ProcedureLong Term Storage Preparation for USE OperationPositioning the Excavator Positioning the Breaker Tool on the Work MaterialBreaker Binding BreakingBlank Firing Underwater USE Underwater KIT P/N-39416Bspf 1/2-14 JIS PF 1/2-14 Each DAY Periodic Maintenance ChecksTool Stop & Lower Bushing WORN-OUT Front Bushings or Retainer Pins Tool Failure not Covered Under WarrantyBlank Firing or Free Running METAL-TO-METAL ContactCorrosion PryingInternal Material Flaw Tool Failure Covered Under WarrantyChisel MoilBlunt Lower Bushing Wear Limit DimensionsModel Tool Stop Upper Bumper Tool Retainer PIN Model Dimension a New Part Wear Limit Dimension BTool BIT Problem Cause Solution TroubleshootingCharging the Main Accumulator When disengaging the tester a POP of nitrogen is normalBar ± Psi ± Charging the Side AccumulatorRecommended Torque Values Recommended Tie Rod Torque ProcedureMBX358 Bolt PatternsOLD MBX408 MBX458 Upper BumperNEW Cover Plate MBX408 & MBX458 Cover Plate MBX608 Test Procedure Flow Test ProceduresHeat Load Test Record the back-pressure PsiUNF SpecificationsSerial Number Locations Models MBX358, MBX408, MBX458 MBX138 Power Cell Illustration QTY Description MBX138 Power Cell Parts ListWith S/N 12A MBX138 Housing Parts12A 13I05 MBX208 Power Cell Illustration MBX208 Power Cell Parts List With S/N 17E 14A00 MBX208 Housing Parts17E 14A01 MBX258 Power Cell Illustration MBX258 Power Cell Parts List MBX258 Housing Parts MBX308 Power Cell Illustration MBX308 Power Cell Parts List MBX308 Housing Parts MBX358 Power Cell Illustration MBX358 Power Cell Parts List MBX358 Housing Parts Items 55, 58 & 59 see Note MBX408 Power Cell IllustrationMBX408 Power Cell Parts List Item P/N QTY Description MBX408 Housing PartsMBX458 Power Cell Illustration MBX458 Power Cell Parts List MBX458 Housing Parts Items 49, 52 & 53 see Note MBX608 Power Cell IllustrationMBX608 Power Cell Parts List MBX608 Housing Parts Hydraulic Tools Declaration of ConformityTool Bits

MBX138 thru MBX608 specifications

Stanley Black & Decker has long been synonymous with innovation and quality in the power tools and machinery sector. Their MBX series, specifically the MBX138 through MBX608, exemplifies this commitment, offering a diverse range of electric and pneumatic tools tailored to meet the demands of both professionals and DIY enthusiasts.

The MBX138 is a compact and versatile tool designed for those who require precision in smaller applications. It features a lightweight design, making it easy to maneuver while still delivering robust performance. With a powerful motor and adjustable speed settings, users can tackle a variety of tasks, from sanding to grinding, with ease.

As we advance through the series, the MBX248 maintains the core functionalities of its predecessor while introducing enhancements for greater efficiency. This model boasts improved ergonomics, including a molded grip that reduces user fatigue during prolonged use. The MBX248 is equipped with advanced features such as dust collection systems to keep workspaces clean and free from debris.

The MBX368 raises the bar further, integrating smart technology that allows users to connect via Bluetooth. This feature enables real-time monitoring of tool performance and battery life, ensuring optimal use and minimizing downtime. The MBX368 is ideal for professionals who rely on their tools for daily tasks and require a seamless integration of technology into their work processes.

The flagship of the series, the MBX608, combines power and versatility, making it suitable for heavy-duty applications. With an ultra-high torque motor and multiple attachments available, this tool is a workhorse in any industrial setting. It includes advanced safety features, such as overload protection and automatic shut-off, providing peace of mind to users who operate in demanding environments.

All models in the MBX series are designed with durability in mind. The tough outer casing and high-impact materials ensure that these tools can withstand the rigors of daily use. Furthermore, user-friendly interfaces and straightforward maintenance routines make them a practical choice for a broad range of users, from novice hobbyists to seasoned experts.

In summary, the MBX138 through MBX608 models from Stanley Black & Decker exemplify a comprehensive approach to tool design, combining performance, safety, and technological advancements. This series reflects the company's commitment to quality and innovation, ensuring that users can rely on these tools for both precision and power in their projects. Whether for home use or in a professional setting, the MBX series stands out as an excellent investment for anyone seeking reliability and efficiency.
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