Hitachi DH 40FB Maintenance and Inspection, Inspecting the drill bits, Maintenance of the motor

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English

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 abrasion is noted.

2.Inspecting the mounting screws

Regularly inspect all mounting screws and ensure that they are properly tightened. Should any of the screws be loose, retighten them immediately.

WARNING: Using this rotary hammer with loosen screws is extremely dangerous.

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: (Fig. 18)

The motor employs carbon brushes which are consumable parts. When they become worn to or near “wear limit”, it could result in motor trouble. When an auto-stop carbon brush is equipped, the motor will stop automatically. At that time, replace both carbon brushes with new ones which have the same carbon brush Nos. shown in the figure.

In addition, always keep carbon brushes clean and ensure that they slide freely within the brush holders.

CAUTION: Using this rotary hammer with a carbon brush which is worn in excess of the wear limit will damage the motor.

Wear limit

No. of carbon brush

73

0.28" (7 mm)

0.67" (17 mm)

Fig. 18

NOTE: Use HITACHI carbon brush No.73 indicated in Fig. 18

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Contents DH 40FB Manual DE Instrucciones E Instrucciones DE SeguridadContents Meanings of Signal Words Important InformationSafety General Safety RulesNever operate without all guards in place Blades and accessories must be securely mounted to the tool Keep motor air vent cleanOperate power tools at the rated voltage Use right toolSpecific Safety Rules and Symbols Double Insulation for Safer Operation Functional Description SpecificationsName of Parts Applications Assembly and OperationPrior to Operation HOW to USE How to install toolHow to drill holes Fig Regulating the number of rotations and hammering FigHow to select rotation-hammering and hammering How to chisel or crush FigInstall the stopper Fig Warming up Fig How to bore Fig HOW to USE the Core BITMounting Dismounting Fig Maintenance and Inspection Maintenance of the motorInspecting the drill bits Inspecting the mounting screwsHow to replase grease Service and repairsAccessories Standard AccessoriesHitachi Informations Importantes Signification DES Mots D’AVERTISSEMENTSecurite Regles Generale DE SecuriteConserver CES Instructions Avertissement Lire et coxmprendre toutes les instructionsFrançais Manipuler l’outil correctement Utiliser l’outil correctGarder propres les évents d’air du moteur Utiliser l’outil motorisé à la tension nominale Regles DE Securite Specifiques ET SymbolesNe pas essuyer les parties en plastique avec du solvant Double Isolation Pour UN Fonctionnement Plus SUR Description Fonctionnelle NOM DES PartiesAvant L’UTILISATION Comment installer l’outil UtilisationRéglage du nombre de rotations et De percussion Fig Comment percer des trous FigComment buriner ou broyer Fig Comment sélectionner rotation- percussion et percussionInstaller la quenouille Fig Préchauffage FigMontage Comment Utiliser LA CouronnePerçage Fig Démontage Fig Entretien ET Inspection Contrôle du foret de perçageInspection des vis de montage Entretien du moteurComment remplacer la graisse Entretien et reparationAccessoires Accessoires StandardBroyage Percussion Información Importante Significado DE LAS Palabras DE SeñalizaciónSeguridad Normas Generales DE SeguridadGuarde Estas Instrucciones Advertencia Lea y entienda todas las instruccionesEspañol Utilice la herramienta correcta Maneje correctamente la herramientaManeje con cuidado las herramientas eléctricas Normas Y Símbolos Específicos DE SeguridadNo limpie las partes de plástico con disolvente Aislamiento Doble Para Ofrecer UNA Operación MÁS Segura Nomenclatura Descripción FuncionalEspecificaciones Aplicaciones Montaje Y OperaciónAntes DE LA Operación Montaje de la herramienta Regulación de número de rotaciones e martilleo FigModo DE Utilización Taladrar orificios FigForma de picar o romper Fig Selección de rotación-martilleo y MartilleoInstalar el tope Fig Calentamiento FigModo DE Usar LA Barrena Tubular MontajeModo de taladrar Fig Desmontaje FigMantenimiento E Inspección Inspeccionar la broca de taladroInspección de los tornillos de montaje Mantenimiento de motorCambio de grasa Mantenimiento y reparaciónAccesorios Accesorios EstándarRomper Martilleo Español × 3× 4MM Español Español Español Itachi Koki Canada Co

DH 40FB specifications

The Hitachi DH 40FB is a powerful and versatile rotary hammer designed for heavy-duty applications in construction, renovation, and maintenance tasks. As a leader in the power tools industry, Hitachi has engineered the DH 40FB to meet the demands of professionals who require both performance and precision in their work.

One of the main features of the Hitachi DH 40FB is its robust motor, delivering a striking force of up to 8.2 joules, making it ideal for drilling and chiseling through concrete, masonry, and other tough materials. This high-impact energy ensures that users can complete their tasks efficiently, whether it’s drilling holes for anchor bolts or chiseling out old material for renovation projects. The hammer offers drilling capacities of up to 40 mm in concrete, allowing for versatile applications depending on the specific needs of the job site.

Another technology that sets the Hitachi DH 40FB apart is its use of a unique vibration-dampening system. This feature significantly reduces the amount of vibration that is transmitted to the user, enhancing comfort and minimizing fatigue during prolonged use. This is especially beneficial for professionals who frequently operate heavy tools, as it helps maintain productivity without compromising on safety and ergonomics.

The DH 40FB also incorporates a user-friendly design that includes an easy-to-access switch for selecting between hammer-only and rotary hammer modes. This versatility enables users to switch effortlessly between different applications, optimizing the tool’s efficiency for various tasks like wall chasing or drilling into steel.

In terms of build quality, the Hitachi DH 40FB is designed for durability. Its aluminum housing protects the internal components from dust and debris, which is critical in harsh job site environments. Additionally, the tool features a rotating brush system that maintains equal power in both forward and reverse modes, along with a rugged case that aids in transportation and storage.

Overall, the Hitachi DH 40FB stands out as a reliable and efficient tool, combining power, comfort, and advanced features that cater to the rigorous demands of the construction industry. With its robust capabilities and modern engineering, it is a valuable asset for any professional looking to enhance productivity on the job site. Whether drilling or chiseling, the DH 40FB continues to prove itself as a trusted choice among power tools.
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