Related Manuals for Stanley MB256
Summary of Contents for Stanley MB256
- Page 1 MB256 MOUNTED HYDRAULIC BREAKER USER MANUAL Safety, Operation and Maintenance © 2015 STANLEY Black & Decker, Inc. New Britain, CT 06053 U.S.A. 30341 3/2019 Ver. 42...
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Page 3: Table Of Contents
REPAIRS AND / OR SERVICE TO THIS TOOL MUST ONLY BE DONE BY AN AUTHORIZED AND CERTIFIED DEALER. For the nearest certified dealer, call STANLEY Infrastructure at (503) 659-5660 and ask for a Customer Service Representative. MB256 User Manual ◄ 3... -
Page 4: Safety Symbols
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 ► MB256 User Manual... -
Page 5: Safety Precautions
The decals must be replaced if illegible. Replacement decals can be obtained from your authorized Stanley Wear Eye Distributor. Protection • When operating the breaker you must use ear protection, eye protection, and breathing protection. MB256 User Manual ◄ 5... - Page 6 For example, excessive • Make sure all controls (levers and pedals) are in the slopes and poor or dangerous terrain conditions NEUTRAL position before starting the carrier. must be avoided. 6 ► MB256 User Manual...
- Page 7 • Do not modify the breaker in any manner. • Use only tool bits supplied by STANLEY. Use of tool bits supplied by another manufacturer may damage the breaker and will void the warranty. •...
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Page 8: Tool Stickers & Tags
NITROGEN ONLY 1000 PSI 34522 Accumulator Pressure Sticker—1000 PSI 47352 Lifting Point Decal 72074 74705 Grease Sticker STANLEY Decal 74707 Used on Mb25600SS Only STANLEY Decal PN:73004 73004 66764 MB256 Decal Made in USA Decal 8 ► MB256 User Manual... -
Page 9: Operation
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. - Page 10 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. 2. With the carrier at idle and the breaker suspended 10 ► MB256 User Manual...
- Page 11 On flat material such as concrete runways, starting to boom and the breaker. 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 MB256 User Manual ◄ 11...
- Page 12 Scoring with the breaker Figure 8. Scoring with the Breaker Breaker tool binding can cause erratic breaker operation and premature wear on the tool shank. Breaker tool 12 ► MB256 User Manual...
- Page 13 “Blank Firing” occurs whenever the breaker is operating MB256 User Manual ◄ 13...
- Page 14 See Greasing The Tool Bit in the sections titled Pre-Operation Procedures. UNDERWATER USE No part of the STANLEY MB256 Breaker may be submerged in water without first modifying the breaker for underwater use. Use of the breaker...
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Page 15: Troubleshooting
If symptoms of poor performance develop, the following users may experience. If a situation occurs that is chart can be used as a guide to correct the problem. not covered, call your STANLEY Customer Service When diagnosing faults in operation of the tool, always Representative for assistance. -
Page 16: Maintenance
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. 16 ► MB256 User Manual... -
Page 17: Charging The Accumulator
Surge Accumulator 1000 PSI +/- 20 PSI - 69 BAR +/- 1.4 BAR Main Accumulator Nitrogen Bottle (locally obtained) Manifold Accumulator 505232 Charge Hose Assy (includes gauge, Surge Accumulator valve, hose and charge valve adapter) Figure 12. Charge Pressure Specification For the MB256 MB256 User Manual ◄ 17... -
Page 18: Flow Control Kit Instructions
The parts list for the Flow Control Kit is shown below. Figure 13. Flow Control Kit ITEM PART DESCRIPTION 34621 FLOW CONTROL BLOCK 34839 WASHER 371516 NYLOCK NUT 02773 ADAPTER 58653 ORIFICE LOCATED UNDER FITTING DESIGNATED AS "S" 58652 CAPSCREW 58654 HOSE 58655 HOSE 18 ► MB256 User Manual... -
Page 19: Wear Tolerances
1.66 in./42 mm Outside Diameter Diameter RETAINER PIN RETAINER PIN (ITEM 16) .25 in./6 mm Outside .18 in./4.6 mm Diameter Outside Diameter PISTON (ITEM 44) Wear Limit 1.80 in./46 mm Depth 1.76 in./45 mm New Part PISTON MB256 User Manual ◄ 19... -
Page 20: Proper Use & Care Of Tool Bits
Special care damage from occurring again. should be taken to keep the tool shank lubricated every All STANLEY tool bits are machined and hardened for two (2) to three (3) hours. maximum performance. Care must be taken to maintain... - Page 21 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. MB256 User Manual ◄ 21...
- Page 22 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. 22 ► MB256 User Manual...
- Page 23 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.
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Page 24: Flow Test Procedures
Never use the relief valve to control the flow rate in the circuit. Cracking pressure means the loss of 4 or more GPM. 24 ► MB256 User Manual... - Page 25 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. MB256 User Manual ◄ 25...
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Page 26: Definition Of Terms
V60/V65/V100 Valves: 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 attachment to function properly if another control function is activated. -
Page 27: Specifications
Carrier Size (Backhoe) ..................... 4000-10000 lbs / 1816-4500 kg 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. MB256 User Manual ◄ 27... -
Page 28: Accessories
TORQUE TABLE Item No. Illustration Description Apply Ft/Lb Power Cell Tie Rod Kopr Kote™ Power Cell Charge Valve Loctite™ 242 Power Cell Capscrew Loctite™ 242 Side Plates Kopr Kote ™ Power Cell Accumulator Cap Anti-Seize 28 ► MB256 User Manual... -
Page 29: Mb256 Power Cell Parts Illustration
MB256 POWER CELL PARTS ILLUSTRATION Valve Accumulator Assem Assembly Power Cell Assembly Surge Accumulator Assembly MB256 User Manual ◄ 29... -
Page 30: Mb256 Power Cell Parts List
MB256 POWER CELL PARTS LIST Item MB256 Qty Description Item MB256 Qty Description 13854 O-RING 2-5/8 X 2-7/8 X 1/8 -231 22980 RETAINER SPRING 23178 TOOL STOP 16549 DOWEL PIN 1/2 X 1-1/4 LG. 22979 LOWER BUSHING 19095 O-RING 5/8 X 13/16 X 3/32 -114... -
Page 31: Mb25600 Side Plates
DECAL, MB256 38718 POWERCELL ASSY. 74705 DECAL, "STANLEY" 11 INCH 47351 DECAL, COMPOSITE WARNING 371052 WASHER 3/4” I.D 47352 DECAL, LIFT POINT 27281 CONICAL TOOL BIT 56595 PRESSURE SPEC STICKER - 300 PSI 62374 SIDEPLATE BOLT MB256 User Manual ◄ 31... -
Page 32: Mb25603 Side Plate Parts Illustration
HHCS 7/8-9UNC X 3.000 72074 DECAL, GREASE 34522 PRESSURE SPEC STICKER - 1000 73004 DECAL, MB256 37915 SIDEPLATE BOLT 74705 DECAL, "STANLEY" 11 INCH 37916 SIDEPLATE NUT 371052 WASHER 3/4" I.D. 38718 POWERCELL ASSY. CONICAL TOOL BIT 27281 32 ► MB256 User Manual... -
Page 33: Mb25600Ss Model Mounting Brackets
Lynch Pin 28393 note at top of page) 371053 Washer 40092 Coupler, Male -Not pictured 32387 Adapter Weldment Bracket Coupler, Female -- Not 65811 380522 Hose Clamp pictured 34839 Washer 34837 Capscrew 371516 380526 Grommet MB256 User Manual ◄ 33... -
Page 34: Mb25641 Parts List & Illustration
COUPLER F.F. MALE 65811 COUPLER F.F. FEMALE 69520 Q-TACH MTG BRKT 69525 HOSE 451TC 06 06 12 10 10-47" W/SL 69525_ HOSE 451TC 06 06 12 10 10-47" W/SL 371053 WASHER 1 3/4" I.D. 372089 LYNCH PIN 34 ► MB256 User Manual... - Page 36 STANLEY Infrastructure 6430 SE Lake Road Portland, Oregon 97222 USA (503) 659-5660 / Fax (503) 652-1780 www.stanleyinfrastructure.com...