Hydraulic Breakers Trouble Shooting and Solution

This trouble-shooting guide has been prepared to aid the operator to locate the problem cause and then remedy when trouble has occurred. If trouble has been caused, obtain details as following checkpoints and contact your local service shop or distributor.

CheckPoint

Troubleshooting Guide

Guide to tool choice

Tool Type

Application Instruction

Tool claim judgment

Hence, to help users use our products correctly, and ensure long operating life, these claim judgment criteria present defect examples that can occur during use, and the disposition standards applicable in each case.

Breakage of piston impact area or tool pins contact corners

Breakage of piston impacting point or of tool pins contact corners is extremely rare. This phenomenon occurs or when striking force is being concentrated on the tool corners due to unsatisfactory flatness of piston and tool impacting point. If such defect occurs, affected tools may not be accepted under warranty.

Plastic deformation of piston impact area

The possibility of tool tip plastic deformation occurring due to piston is extremely slim. Such defects may occur due to material strength deficiency, or brittleness, resulting from unsatisfactory heat-treatment. If such defect occurs, affected products may be accepted under warranty.

Breaking inside basic line

Should product breakage occur in any direction at a point inside the front cover, as shown in <Fig.5>, from the basic line shown in <Fig.4>, this may be due to defective material, defective heat-treatment; tool deformation, or unsatisfactory shaping of tool neck. Should such defect occur, affected products may be adopted under warranty.

In addition to the causes described above, product breakage inside the basic line may also occur if the interval between the front cover and tool widens due to excessive wear of front cover, coupled with excessive bending load being applied to hydraulic breaker, if any trace of seizure, caused by friction between the front cover and tool, is observed on the surface of the tool body, and if it is clear that product breakage is centered around the area of such seizure, affected products may be rejected under warranty.

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Breakage outside basic line

Crushing of tooltip

Breaker tools are heat-treated to exhibit high breakage and wear resistance, and defects such as crushing of the tooltip <Fig.9> are not to be expected under normal operating conditions. However, if a tool is hammering continuously for a long period of time without crushing or puncturing the material being worked on, the temperature of the tip rises extremely high, inducing annealing of the heat-treated material, and bringing on plastic deformation(crushing), rather than wear, as explained above, crushing of the tool tip id caused by improper working methods, and, therefore, affected products will be rejected under warranty.

Tool tip wear

The rates and types of tool tip wear vary with work material and work method. If the diameter of the worn tip of a chisel point tool is less than 2/3 of the tool body diameter, as shown in <Fig.10>; and if the tip of a new pointed tool is worn down in excess of 5mm lengthwise from the tip, this is considered normal tool wear, hence, tools exhibiting such normal wear, as shown in <Fig.10>, will be rejected warranty claim.

JIANGTU Attachments, as a breaker manufacturer for 12 years. We could provide various types of hydraulic hammer breakers and the chisel selection recommendation and installation instructions for you. If you have any questions, please feel free to contact us.

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