Hitachi DH40MB Maintenance and Inspection, Inspecting the drill bits, Maintenance of the motor

Page 17

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. 20)

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. 20

NOTE: Use HITACHI carbon brush No.73 indicated in Fig. 20

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Contents Manual DE Instrucciones E Instrucciones DE Seguridad DH 40MBContents Important Information Meanings of Signal WordsGeneral Safety Rules SafetyNever operate without all guards in place Keep motor air vent clean Blades and accessories must be securely mounted to the toolOperate power tools at the rated voltage Use right toolSpecific Safety Rules and Symbols Double Insulation for Safer Operation Name of Parts SpecificationsFunctional Description Prior to Operation Assembly and OperationApplications Regulating the number of rotations and hammering Fig HOW to USEHow to drill holes Fig When chipping and shredding at hammering How to chisel or crush FigWhen drilling at rotation + hammering Install the stopper Fig Warming up Fig Using Drill CHUCK, Chuck AdaptorMounting HOW to USE the Core BITDismounting Fig How to bore FigMaintenance of the motor Maintenance and InspectionInspecting the drill bits Inspecting the mounting screwsService and repairs How to replase greaseStandard Accessories AccessoriesDrilling holes....For drilling metals and wooden materials Hitachi Signification DES Mots D’AVERTISSEMENT Informations ImportantesRegles Generale DE Securite SecuriteConserver CES Instructions Avertissement Lire et coxmprendre toutes les instructionsFrançais Garder propres les évents d’air du moteur Utiliser l’outil correctManipuler l’outil correctement Ne pas essuyer les parties en plastique avec du solvant Regles DE Securite Specifiques ET SymbolesUtiliser l’outil motorisé à la tension nominale Double Isolation Pour UN Fonctionnement Plus SUR NOM DES Parties Description FonctionnelleAvant L’UTILISATION Comment percer des trous Fig UtilisationRéglage du nombre de rotations et de percussion Fig Burinage et découpures en percussion Comment buriner ou broyer FigPerçage en rotation + percussion Installer la quenouille Fig Préchauffage Fig AvertissementMontage Comment Utiliser LA Couronne’assurer que l’interrupteur est sur la Position d’arrêt OFF et débrancher ’outilDémontage Fig Perçage FigContrôle du foret de perçage Entretien ET InspectionInspection des vis de montage Entretien du moteurEntretien et reparation Comment remplacer la graisseAccessoires Standard AccessoiresPerçage de trous.…Pour perçage des métaux et du bois Creusage de rainures et cassure des angles Percussion Significado DE LAS Palabras DE Señalización Información ImportanteNormas Generales DE Seguridad SeguridadGuarde Estas Instrucciones Advertencia Lea y entienda todas las instruccionesPeligrosos cuando se utilicen con otra Maneje correctamente la herramienta Utilice la herramienta correctaNo limpie las partes de plástico con disolvente Normas Y Símbolos Específicos DE SeguridadManeje con cuidado las herramientas eléctricas Aislamiento Doble Para Ofrecer UNA Operación MÁS Segura Especificaciones Descripción FuncionalNomenclatura Antes DE LA Operación Montaje Y OperaciónAplicaciones Taladrar orificios Fig Modo DE UtilizaciónRegulación de número de rotaciones e martilleo Fig Para cortar con escoplo y cincel en el modo de martilleo Forma de picar o romper FigCuando taladre con rotación + martilleo Instalar el tope Fig Calentamiento Fig AdvertenciaMontaje Modo DE Usar LA Barrena TubularDesmontaje Fig Modo de taladrar FigInspeccionar la broca de taladro Mantenimiento E InspecciónInspección de los tornillos de montaje Mantenimiento de motorMantenimiento y reparación Cambio de grasaAccesorios Estándar AccesoriosRomper Martilleo Excavar, ranurado y rebordes Martilleo Español Ball Bearing 6204VVCMPS2S 4MM Español Hitachi Koki Canada Co