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MAINTENANCE AND INSPECTION

WARNING: Be sure to switch power OFF and disconnect the plug from the receptacle during maintenance and inspection.

1.Inspecting the drill bits

Since use of a dull tool will cause motor malfunctioning and degraded efficiency, replace the drill bit with a new one or resharpening without delay when abra- sion is noted.

2.Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tight- ened. Should any of the screws be loosened, retighten them immediately.

WARNING: Using this rotary hammer with loosen screws is extremely dan- gerous.

3.Maintenance of the motor

The motor unit winding is the very “heart” of the power tool. Exercise due care to ensure the winding does not become damaged and/or wet with oil or water.

4.Inspecting the carbon brushes

For your continued safety and electrical shock protection, carbon brush inspec- tion and replacement on this tool should ONLY be performed by a HITACHI AU-

THORIZED SERVICE CENTER.

5.How to replace grease

Low viscosity grease is applied to this rotary hammer so that it can be used for a long period without replacing the grease. Please contact the nearest autho- rized service center for grease replacement when any grease is leaking from a loosened screw. Further use of the rotary hammer despite the grease shortage causes seizure to reduce the service life.

CAUTION: A specific grease is used with this machine, therefore, the normal performance of the machine may be badly affected by use of other grease. Please be sure to let one of our authorized service center undertaking replacement of the grease.

6.Service and repairs

All quality power tools will eventually require servicing or replacement of parts because of wear from normal use. To assure that only authorized replacement parts will be used, all service and repairs must be performed by a HITACHI AU-

THORIZED SERVICE CENTER, ONLY.

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Hitachi Koki USA DH 24PC instruction manual Maintenance and Inspection
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DH 24PC specifications

The Hitachi Koki USA DH 24PC is a robust and versatile rotary hammer designed for a variety of heavy-duty applications in both professional and DIY environments. With its powerful performance and advanced features, the DH 24PC has earned a reputation as a reliable tool for drilling into concrete, brick, and masonry.

One of the most notable features of the DH 24PC is its impressive motor, which delivers a strong 2.4 joules of impact energy. This allows the tool to drill through tough materials efficiently, making it ideal for construction workers, contractors, and serious DIY enthusiasts. The hammer is equipped with a 24mm SDS-plus chuck, providing excellent grip and stability for various bits, allowing users to switch quickly between drilling and chiseling modes.

The DH 24PC incorporates innovative technologies aimed at enhancing user experience and safety. It features an ergonomic design with a soft, rubberized grip that minimizes vibration and reduces fatigue during extended use. The lightweight construction of the tool, weighing only 6.4 pounds, contributes to its ease of handling while still providing robust power.

Additionally, the DH 24PC boasts a three-mode operation, allowing users to select between hammer-only, hammer-drill, and drill-only modes. This versatility not only increases the range of applications but also ensures efficiency when tackling various tasks. The presence of a variable speed control adds further flexibility, enabling precise adjustments to match the specific drilling or chiseling requirements.

Another standout characteristic of the DH 24PC is its integrated dust protection system. This feature helps to prolong the life of the tool by minimizing the amount of debris that can enter the motor and other components. Furthermore, the tool is designed with replaceable carbon brushes, extending its lifespan and ensuring consistent performance over time.

Safety is paramount in power tools, and the DH 24PC is no exception. It includes a convenient lock-on switch for continuous operation, which enhances safety and reduces strain during prolonged use. Overall, the Hitachi Koki USA DH 24PC is a powerful and efficient rotary hammer that combines advanced technology, user-friendly features, and durable construction, making it a preferred choice for professionals and enthusiasts alike. Its blend of performance, versatility, and ease of use truly sets it apart in the competitive tool market.
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