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(4) Engager la plaque de guidage dans la couronne et tourner la plaque de guidage à gauche ou à droite de manière à ce qu’elle à ce qu’elle ne puisse pas tomber, même si elle orientée vers le bas. (Fig. 19)

2.Perçage (Fig. 20)

(1) Brancher la perceuse.

(2) Un ressort est placé dans le goujon cen- tral.

Appuyer légèrement l’outil perpendi- culairement contre le mur ou le plancher. Toute la surface de la couronne doit être en contact avec le mur ou le plancher. Mettre en marche.

(3) Quand on a percé sur une profondeur d’environ 3/16" (5 mm), la position du trou est déterminée. Continuer à percer après avoir retiré le goujon central et la plaque de guidage de la couronne.

(4) Si l’on applique une force excessive, cela donnera un travail bâclé et abîmera la pointe du foret de perçage, réduisant ainsi la durée de service du marteau rotatif.

PRECAUTION:

Quand on retire le goujon central et la plaque de guidage, mettre l’interrupteur sur la position d’arrêt (OFF) et débrancher la perceuse.

3.Démontage (Fig. 21)

Une autre méthode consiste à retirer la queue de la couronne du marteau rotatif à frapper fortement la tête de la queue de la couronne deux ou trois fois avec un marteau, tout en maintenant la couronne. Cela aura pour effet de desserrer le filetage et on pourra retirer la couronne.

Fig. 18

Plaque de guidage

Goujon

centralBout de couronne

Couronne

Fig. 19

Fig. 20

Queue de couronne

Fig. 21

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Image 39
Hitachi Koki USA DH 24PC instruction manual Perçage Fig, Démontage Fig

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.