Case 9007 Crawler Excavator Operator's Manual 6-6361 - PDF DOWNLOAD

Page 113

OPERATING INSTRUCTIONS

HANDLING THE HYDRAULIC BREAKER (optional) Template Name: OM_1_col Template Date: 1994_04_29

The lifting equipment must be strong enough to take the weight of the hydraulic breaker. See “Hydraulic breaker” in the “Specifications” Section.

CS99C626

- Use slings, belts, fittings and chains which are in perfect condition and which are equipped with safety type hooks that will not accidentally open. - Use a means of guidance while handling and use handling equipment which is conformance with regulations. - Do not allow anyone to remain within the working range of the hydraulic breaker while it is being handled. - Attach the slings and chains as shown below.

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BREAKING TECHNIQUES ON A HYDRAULIC BREAKER (optional) To increase the hydraulic breaker’s working life, pay particular attention to correct working methods and to the correct choice of tool for the job. There are essentially two ways of breaking with a hydraulic breaker.

Breaking by penetration (or cutting)

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In this form of breaking a moil point or chisel tool is forced inside the material. This method is most effective in soft, layered or plastic, low abrasive material. The high impact rate of the small breakers makes them ideal for penetrative breaking.

Breaking by impact With impact breaking, the material is broken by transferring very strong mechanical stress waves from the tool into the material. The best possible energy transfer between the tool and the object is achieved with a blunt tool. Impact breaking is most effective in hard, brittle and very abrasive materials. The use of a chisel tool in hard material will cause the sharp edge to wear very quickly. The high impact energy of the big breakers makes them ideal for impact breaking.

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